CN109031473A - The automatic judging method and device of complete fine day - Google Patents
The automatic judging method and device of complete fine day Download PDFInfo
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Abstract
The present invention provides the automatic judging methods and device of a kind of complete fine day, are related to remote sensing weather prediction techniques field, and this method includes obtaining target area in the ground incidence solar shortwave radiation data of the preset time scale of target date whole day；Sunrise moment, sunset moment and shortwave atmospheric transmissivity and normalization incident solar radiation value are calculated according to the data；It parses the ground incidence solar shortwave radiation data and shortwave atmospheric transmissivity and falls the situation that changes with time between the moment in the Summer Solstice or the Winter Solstice at sunrise moment, and judge the weather condition of the target area with this；If the weather condition is judged as fine day, compare the normalization incident solar radiation value and fine day threshold value；If the normalization incident solar radiation value is not less than fine day threshold value, confirm that weather of the target area in the target date is complete fine day.The automatic judging method and device of a kind of complete fine day provided in an embodiment of the present invention can quickly and easily determine complete fine day or have the weather conditions of cloud completely.
Description
Technical field
The present invention relates to remote sensing weather prediction techniques field, a kind of automatic judging method more particularly, to complete fine day and
Device.
Background technique
Evapotranspiration is water circulation and the important component of Land surface energy budget, hydrology, meteorology, agronomy, learn
In equal disciplinary studies, all play an important role.Remote sensing technology is from the point of view of technical, economy and actual effect etc., quilt
The method for being considered to obtain earth surface regional scale evapotranspiration distribution unique feasible.Studies have shown that local, region and global ruler
The evapotranspiration distribution of degree can be estimated according to the Land Surface Parameters and ground observation data that remote-sensing inversion obtains.
Under normal conditions, most of ground parameter needed for remote sensing obtains evapotranspiration is to pass by constantly in satellite as the feelings of fine day
It is carried out under condition.Currently, research is steamed in the in a few days variation characteristic based on ground incident solar radiation and shortwave atmospheric transmissivity data
When distributing the case where each characterization factor is influenced by cloud, still shortage effective ways can quickly determine complete fine day, have cloud completely
Equal weather conditions, this results in the current largely research to remote-sensing inversion Remote sensing hair, all there is the characterization to evapotranspiration
The daily process that the factor is influenced by cloud recognizes the problem of wretched insufficiency, and evapotranspiration remote sensing appraising precision is affected.
Summary of the invention
In view of this, the purpose of the present invention is to provide the automatic judging method and device of a kind of complete fine day, Ke Yijian
It singly quickly determines complete fine day or has the weather conditions of cloud completely, the day influenced on the characterization factor of evapotranspiration by cloud is promoted to become
The analysis of change process.
In a first aspect, the embodiment of the invention provides a kind of automatic judging methods of complete fine day, comprising: obtain target area
Ground incidence solar shortwave radiation data of the domain in the preset time scale of target date whole day；It is short according to the ground incidence sun
Wave radiation data calculate the target area in the sunrise moment of the target date, sunset moment and the preset time scale
Shortwave atmospheric transmissivity and normalization incident solar radiation value；The shortwave atmospheric transmissivity is the ground incidence solar shortwave radiation
The ratio of data and atmosphere top solar radiation value；The normalization incident solar radiation value is the ground incidence solar shortwave radiation
The ratio of the cosine value of data and solar zenith angle；Parse the ground incidence solar shortwave radiation data and the shortwave atmospheric transmission
Rate falls the situation that changes with time between the moment in the Summer Solstice or the Winter Solstice at sunrise moment, and the day of the target area is judged according to the situation of change
Gas situation；If the weather condition is judged as fine day, compare the normalization incident solar radiation value and fine day threshold value；If the normalizing
It dissolves into and penetrates solar radiation value not less than the fine day threshold value, then confirm that weather of the target area in the target date is completely fine
It.
With reference to first aspect, the embodiment of the invention provides the first possible embodiments of first aspect, wherein should
Method further include: if the normalization incident solar radiation value is less than the fine day threshold value, judge the target area in the target day
The weather of phase is to have the skies completely.
With reference to first aspect, the embodiment of the invention provides second of possible embodiments of first aspect, wherein on
It states and obtains target area the ground incidence solar shortwave radiation data of the preset time scale of target date whole day the step of, packet
It includes: obtaining target area in the ground incidence solar shortwave radiation data of the half an hour scale of target date whole day.
With reference to first aspect, the embodiment of the invention provides the third possible embodiments of first aspect, wherein on
State parse the ground incidence solar shortwave radiation data and the shortwave atmospheric transmissivity the sunrise moment to the sunset moment it
Between change with time situation, and the step of weather condition of the target area is judged according to the situation of change, comprising: if the ground
The slope that slope that incidence solar shortwave radiation data in face change over time and the shortwave atmospheric transmissivity change over time from this
Being carved into the moment at high noon at sunrise is positive value, and is negative value from the moment at high noon to the sunset moment, then judges the target area
The weather condition in domain is fine day.
The third possible embodiment with reference to first aspect, the embodiment of the invention provides the 4th kind of first aspect
Possible embodiment, wherein above-mentioned to calculate the target area in the target according to the ground incidence solar shortwave radiation data
The step of sunrise moment on date, sunset moment, comprising: traverse the ground incidence solar shortwave radiation data；The ground is entered
Solar shortwave radiation data are penetrated to first appear in one day greater than 5W/m2Data corresponding at the time of be set as the sunrise moment；
The ground incidence solar shortwave radiation data are occurred for the last time to be greater than 5W/m in one day2Data corresponding at the time of set
It is set to the sunset moment.
The third possible embodiment with reference to first aspect, the embodiment of the invention provides the 5th kind of first aspect
Possible embodiment, wherein above-mentioned to calculate the short of the preset time scale according to the ground incidence solar shortwave radiation data
The calculation formula of wave atmospheric transmissivity are as follows:In formula, τ is shortwave atmospheric transmissivity, RsFor ground incidence sun shortwave spoke
Penetrate data, RpFor atmosphere top solar radiation value.
The 5th kind of possible embodiment with reference to first aspect, the embodiment of the invention provides the 6th kind of first aspect
Possible embodiment, wherein the calculation formula of above-mentioned atmosphere top solar radiation value are as follows: Rp=S0Cos θ, in formula, RpIt is big
Gas-bearing formation top solar radiation value, S0For solar constant, θ is solar zenith angle.
The 6th kind of possible embodiment with reference to first aspect, the embodiment of the invention provides the 6th kind of the 7th aspect
Possible embodiment, wherein the calculation formula of above-mentioned solar zenith angle are as follows:
In formula, θ is solar zenith angle,For geographic latitude, δ is solar declination, and z is solar hour angle, and N is day ordinal number, and t is place
When.
With reference to first aspect, the embodiment of the invention provides the 8th kind of possible embodiments of first aspect, wherein on
State the calculation formula of fine day threshold value are as follows:τsω=0.75+2 × 10-5× H,In formula, T is fine day threshold value, RS↓For theoretical fine day incident solar radiation value, θ is too
Positive zenith angle, b are specified constant, τsωFor the atmosphere direct transmission factor of theoretical fine day, H is elevation, S0For solar constant, drFor day
Ground distance, N are day ordinal number.
Second aspect, the embodiment of the invention also provides a kind of automatic-decision device of complete fine day, which includes: number
According to module is obtained, for obtaining target area in the ground incidence solar shortwave radiation of the preset time scale of target date whole day
Data；Preprocessing module, for calculating the target area in the target date according to the ground incidence solar shortwave radiation data
The sunrise moment, sunset moment and the preset time scale shortwave atmospheric transmissivity and normalization incident solar radiation value；
The shortwave atmospheric transmissivity is the ratio of ground incidence solar shortwave radiation data and atmosphere top solar radiation value；The normalization
Incident solar radiation value is the ratio of the cosine value of ground incidence solar shortwave radiation data and solar zenith angle；Analysis judgment mould
Block, for parse the ground incidence solar shortwave radiation data and the shortwave atmospheric transmissivity the Summer Solstice or the Winter Solstice at sunrise moment fall the moment it
Between change with time situation, and the weather condition of the target area is judged according to the situation of change；Complete fine day determination module,
If being judged as fine day for the weather condition, compare the normalization incident solar radiation value and fine day threshold value；If the normalization
Incident solar radiation value is not less than the fine day threshold value, then confirms that weather of the target area in the target date is complete fine day.
The embodiment of the present invention bring it is following the utility model has the advantages that
The automatic judging method and device of a kind of complete fine day provided in an embodiment of the present invention, this method include obtaining target
Ground incidence solar shortwave radiation data of the region in the preset time scale of target date whole day；According to the ground incidence sun
Shortwave radiation data calculate the target area in the sunrise moment of the target date, sunset moment and the preset time scale
Shortwave atmospheric transmissivity and normalization incident solar radiation value；Parse the ground incidence solar shortwave radiation data and the shortwave
Atmospheric transmissivity falls the situation that changes with time between the moment in the Summer Solstice or the Winter Solstice at sunrise moment, and judges the target according to the situation of change
The weather condition in region；If the weather condition is judged as fine day, compare the normalization incident solar radiation value and fine day threshold value；
If the normalization incident solar radiation value is not less than the fine day threshold value, confirm that weather of the target area in the target date is
Complete fine day；Can quickly and easily determine complete fine day or have the weather conditions of cloud completely, promote to the characterization of evapotranspiration because
The analysis for the daily process that son is influenced by cloud.
Other feature and advantage of the disclosure will illustrate in the following description, alternatively, Partial Feature and advantage can be with
Deduce from specification or unambiguously determine, or by implement the disclosure above-mentioned technology it can be learnt that.
To enable the above objects, features, and advantages of the disclosure to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of flow chart of the automatic judging method of complete fine day provided in an embodiment of the present invention；
Fig. 2 is the flow chart of another automatic judging method of fine day completely provided in an embodiment of the present invention；
Fig. 3 is the flow chart of another automatic judging method of fine day completely provided in an embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of the automatic-decision device of complete fine day provided in an embodiment of the present invention.
Icon:
41- data acquisition module；42- preprocessing module；43- analysis judgment module；The complete fine day determination module of 44-.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Currently, research is steamed in the in a few days variation characteristic based on ground incident solar radiation and shortwave atmospheric transmissivity data
When distributing the case where each characterization factor is influenced by cloud, still shortage effective ways can quickly determine complete fine day, have cloud completely
Equal weather conditions.Based on this, a kind of automatic judging method and device of complete fine day provided in an embodiment of the present invention can be simple
It quickly determines complete fine day or has the weather conditions of cloud completely, promote the diurnal variation influenced on the characterization factor of evapotranspiration by cloud
The analysis of process.
For convenient for understanding the present embodiment, first to a kind of the automatic of complete fine day disclosed in the embodiment of the present invention
Judgment method describes in detail.
Embodiment one
As shown in Figure 1, being a kind of flow chart of the automatic judging method of complete fine day provided in an embodiment of the present invention, by scheming
1 as it can be seen that method includes the following steps:
Step S101: target area is obtained in the ground incidence sun shortwave spoke of the preset time scale of target date whole day
Penetrate data.
In at least one possible embodiment, which can be half an hour.Target area is obtained to exist
The ground incidence solar shortwave radiation data of the half an hour scale of target date whole day, the ground incidence solar shortwave radiation data
Resulting data are directly measured for ground.In other possible embodiments, the time scale can also be 1 hour, it is 1.5 small
When etc..
Step S102: the target area is calculated in the sunrise of target date according to the ground incidence solar shortwave radiation data
The shortwave atmospheric transmissivity and normalization incident solar radiation value at moment, sunset moment and above-mentioned preset time scale；This is short
Wave atmospheric transmissivity is the ratio of ground incidence solar shortwave radiation data and atmosphere top solar radiation value；The normalization is incident
Solar radiation value is the ratio of the cosine value of ground incidence solar shortwave radiation data and solar zenith angle.
It here, is therein referring to fig. 2 when calculating sunrise moment, sunset moment of the target area in target date
A kind of embodiment, its steps include:
S201: above-mentioned ground incidence solar shortwave radiation data are traversed；
S202: the ground incidence solar shortwave radiation data are first appeared in one day greater than 5W/m2Data institute it is right
The sunrise moment is set as at the time of answering；
S203: the ground incidence solar shortwave radiation data are occurred for the last time to be greater than 5W/m in one day2Data
The sunset moment is set as at the time of corresponding.
In this way, sunrise of the target date in one day and sunset moment has been determined.
Then, the solar zenith angle for needing to calculate target area, its calculation formula is:
In above formula, θ is solar zenith angle,For geographic latitude, δ is solar declination, and z is solar hour angle.Wherein, the sun
Declination and the calculation formula of solar hour angle are respectively as follows:
In formula, N is day ordinal number, when t is place.
After acquiring the solar zenith angle of target area, calculated using the calculation formula of atmosphere top solar radiation value big
Gas-bearing formation top solar radiation value, its calculation formula is:
Rp=S0cosθ (4)
In formula, RpFor atmosphere top solar radiation value；S0For solar constant, value 1365W/m2；θ is solar zenith angle.
Then, the shortwave atmospheric transmission of preset time scale is calculated according to above-mentioned ground incidence solar shortwave radiation data
Rate, its calculation formula is:
In above formula, τ is shortwave atmospheric transmissivity, RsFor ground incidence solar shortwave radiation data, RpFor the atmosphere top sun
Radiation value.
Step S103: parse the ground incidence solar shortwave radiation data and the shortwave atmospheric transmissivity it is above-mentioned at sunrise
It carves to the situation that changes with time between the sunset moment, and judges the weather condition of the target area according to the situation of change.
Here, if the slope that changes over time of the ground incidence solar shortwave radiation data and the shortwave atmospheric transmissivity with
The slope of time change is positive value from the moment at high noon is carved at sunrise, and is negative value from the moment at high noon to carving at sunset,
Then judge the target area the target date weather condition for fine day.
By taking preset time scale is half an hour as an example.In one day target date, if the ground incidence of half an hour scale is too
Sun radiation RsWith corresponding shortwave atmospheric transmissivity data τ from sunrise moment trTo moment at high noon tmIt is increased monotonically, while from high noon
Moment tmTo sunset moment tsMonotone decreasing, then tentatively choose in this day as fine day, i.e. fine day condition meets 6 He of following equation
Formula 7:
Wherein, RsFor ground incidence shortwave solar radiation data；tiAt the time of correspondence for i-th of half an hour；ti+1For i+1
At the time of and a half hours corresponding；trFor the sunrise moment；tmIt is positive the quarter period of the day from 11 a.m. to 1 p.m；tsFor the sunset moment.
Step S104: if the weather condition is judged as fine day, more above-mentioned normalization incident solar radiation value and fine day
Threshold value.
Here, fine day threshold value is a reference threshold according to the incident solar radiation value setting of theoretically fine day.At this
In inventive embodiments, calculation formula is as follows:
In formula, T is fine day threshold value, RS↓For theoretical fine day incident solar radiation value, θ is solar zenith angle, and b is specified normal
Number, τsωFor the atmosphere direct transmission factor of theoretical fine day, drFor solar distance.
Wherein, the atmosphere direct transmission factor of theoretical fine day and the calculation formula of solar distance are respectively as follows:
τsω=0.75+2 × 10-5×H (9)
In above formula, H is elevation, and N is day ordinal number.
Step S105: if the normalization incident solar radiation value is not less than fine day threshold value, confirm the target area at this
The weather of target date is complete fine day.
In alternatively possible embodiment, as shown in figure 3, after the weather condition is judged as fine day, if this is returned
One dissolves into and penetrates solar radiation value less than fine day threshold value, then judge the target area the target date weather to there is cloud completely
It.
In this way, can quickly judge target area in the weather condition of target date whole day according to above step.
The automatic judging method of complete fine day provided in an embodiment of the present invention, this method include obtaining target area in target
The ground incidence solar shortwave radiation data of the preset time scale of date whole day；According to the ground incidence solar shortwave radiation number
According to calculate the target area the sunrise moment of the target date, sunset moment and the preset time scale shortwave atmosphere
Transmissivity and normalization incident solar radiation value；Parse the ground incidence solar shortwave radiation data and the shortwave atmospheric transmissivity
The situation that changes with time between the moment is fallen in the Summer Solstice or the Winter Solstice at sunrise moment, and judges the weather of the target area according to the situation of change
Situation；If the weather condition is judged as fine day, compare the normalization incident solar radiation value and fine day threshold value；If the normalization
Incident solar radiation value is not less than the fine day threshold value, then confirms that weather of the target area in the target date is complete fine day；
It can quickly and easily determine complete fine day or have the weather conditions of cloud completely, promotion is influenced the characterization factor of evapotranspiration by cloud
Daily process analysis.
Embodiment two
The embodiment of the invention also provides a kind of automatic-decision devices of complete fine day, are the embodiment of the present invention referring to fig. 4
The structural schematic diagram of the automatic-decision device of a kind of complete fine day provided, from fig. 4, it can be seen that the device includes sequentially connected number
According to acquisition module 41, preprocessing module 42, analysis judgment module 43 and complete fine day determination module 44.Wherein, modules
Function is as follows:
Data acquisition module 41, it is incident on the ground of the preset time scale of target date whole day for obtaining target area
Solar shortwave radiation data；
Preprocessing module 42, for calculating the target area in the target according to the ground incidence solar shortwave radiation data
The sunrise moment on date, the shortwave atmospheric transmissivity at sunset moment and the preset time scale and the incident sun spoke of normalization
Penetrate value；The shortwave atmospheric transmissivity is the ratio of ground incidence solar shortwave radiation data and atmosphere top solar radiation value；It should
Normalize the ratio for the cosine value that incident solar radiation value is ground incidence solar shortwave radiation data and solar zenith angle；
Analysis judgment module 43 exists for parsing the ground incidence solar shortwave radiation data and the shortwave atmospheric transmissivity
The Summer Solstice or the Winter Solstice at sunrise moment falls the situation that changes with time between the moment, and the weather feelings of the target area are judged according to the situation of change
Condition；
Complete fine day determination module 44, if being judged as fine day for the weather condition, compares the normalization incidence sun
Radiation value and fine day threshold value；If the normalization incident solar radiation value is not less than the fine day threshold value, confirm that the target area exists
The weather of the target date is complete fine day.
The automatic-decision device of complete fine day provided in an embodiment of the present invention, with complete fine day provided by the above embodiment
Automatic judging method technical characteristic having the same reaches identical technical effect so also can solve identical technical problem.
It is apparent to those skilled in the art that for convenience and simplicity of description, foregoing description it is complete
The specific work process of the automatic-decision device of fine day, can refer to corresponding processes in the foregoing method embodiment, herein no longer
It repeats.
Unless specifically stated otherwise, the opposite step of the component and step that otherwise illustrate in these embodiments, digital table
It is not limit the scope of the invention up to formula and numerical value.
In all examples being illustrated and described herein, any occurrence should be construed as merely illustratively, without
It is as limitation, therefore, other examples of exemplary embodiment can have different values.
In addition, in the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
Finally, it should be noted that embodiment described above, only a specific embodiment of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, those skilled in the art should understand that: anyone skilled in the art
In the technical scope disclosed by the present invention, it can still modify to technical solution documented by previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover in protection of the invention
Within the scope of.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of automatic judging method of complete fine day characterized by comprising
Target area is obtained in the ground incidence solar shortwave radiation data of the preset time scale of target date whole day；
According to the ground incidence solar shortwave radiation data calculate the target area the target date the sunrise moment,
The shortwave atmospheric transmissivity of sunset moment and the preset time scale and normalization incident solar radiation value；The shortwave
Atmospheric transmissivity is the ratio of the ground incidence solar shortwave radiation data and atmosphere top solar radiation value；The normalization
Incident solar radiation value is the ratio of the cosine value of the ground incidence solar shortwave radiation data and solar zenith angle；
The ground incidence solar shortwave radiation data and the shortwave atmospheric transmissivity are parsed at the sunrise moment to described
Change with time situation between the sunset moment, and the weather condition of the target area is judged according to the situation of change；
If the weather condition is judged as fine day, the normalization incident solar radiation value and fine day threshold value；
If the normalization incident solar radiation value is not less than the fine day threshold value, confirm the target area in the target
The weather on date is complete fine day.
2. the automatic judging method of complete fine day according to claim 1, which is characterized in that further include:
If the normalization incident solar radiation value is less than the fine day threshold value, judge the target area in the target day
The weather of phase is to have the skies completely.
3. the automatic judging method of complete fine day according to claim 1, which is characterized in that the acquisition target area exists
The step of ground incidence solar shortwave radiation data of the preset time scale of target date whole day, comprising:
Target area is obtained in the ground incidence solar shortwave radiation data of the half an hour scale of target date whole day.
4. the automatic judging method of complete fine day according to claim 1, which is characterized in that the parsing ground enters
Penetrate solar shortwave radiation data and the shortwave atmospheric transmissivity the sunrise moment between the sunset moment at any time
Situation of change, and the step of weather condition of the target area is judged according to the situation of change, comprising:
If slope and the shortwave atmospheric transmissivity that the ground incidence solar shortwave radiation data change over time are at any time
To be carved into the moment at high noon at sunrise be positive value to the slope of variation from described, and is negative from the moment at high noon to the sunset moment
Value, then judge the weather condition of the target area for fine day.
5. the automatic judging method of complete fine day according to claim 4, which is characterized in that described to be entered according to the ground
It penetrates solar shortwave radiation data and calculates the target area sunrise moment, the sunset moment of the target date the step of, packet
It includes:
Traverse the ground incidence solar shortwave radiation data；
The ground incidence solar shortwave radiation data are first appeared in one day greater than 5W/m2Data corresponding at the time of
It is set as the sunrise moment；
The ground incidence solar shortwave radiation data are occurred for the last time to be greater than 5W/m in one day2Data corresponding to
Moment is set as the sunset moment.
6. the automatic judging method of complete fine day according to claim 4, which is characterized in that described to be entered according to the ground
Penetrate the calculation formula that solar shortwave radiation data calculate the shortwave atmospheric transmissivity of the preset time scale are as follows:
In formula, τ is shortwave atmospheric transmissivity, RsFor ground incidence solar shortwave radiation data, RpFor the solar radiation of atmosphere top
Value.
7. the automatic judging method of complete fine day according to claim 6, which is characterized in that the atmosphere top sun spoke
Penetrate the calculation formula of value are as follows:
Rp=S0cosθ
In formula, RpFor atmosphere top solar radiation value, S0For solar constant, θ is solar zenith angle.
8. the automatic judging method of complete fine day according to claim 7, which is characterized in that the meter of the solar zenith angle
Calculate formula are as follows:
In formula, θ is solar zenith angle,For geographic latitude, δ is solar declination, and z is solar hour angle, and N is day ordinal number, and t is place
When.
9. the automatic judging method of complete fine day according to claim 1, which is characterized in that the calculating of the fine day threshold value
Formula are as follows:
τsω=0.75+2 × 10-5× H,
In formula, T is fine day threshold value, RS↓For theoretical fine day incident solar radiation value, θ is solar zenith angle, and b is specified constant, τsω
For the atmosphere direct transmission factor of theoretical fine day, H is elevation, S0For solar constant, drFor solar distance, N is day ordinal number.
10. a kind of automatic-decision device of complete fine day characterized by comprising
Data acquisition module, it is short in the ground incidence sun of the preset time scale of target date whole day for obtaining target area
Wave radiation data；
Preprocessing module, for calculating the target area in the target according to the ground incidence solar shortwave radiation data
The sunrise moment on date, the shortwave atmospheric transmissivity at sunset moment and the preset time scale and the incident sun of normalization
Radiation value；The shortwave atmospheric transmissivity is the ground incidence solar shortwave radiation data and atmosphere top solar radiation value
Ratio；The normalization incident solar radiation value is the cosine of the ground incidence solar shortwave radiation data and solar zenith angle
The ratio of value；
Analysis judgment module, for parsing the ground incidence solar shortwave radiation data and the shortwave atmospheric transmissivity in institute
The sunrise moment is stated to the situation that changes with time between the sunset moment, and the target area is judged according to the situation of change
The weather condition in domain；
Complete fine day determination module, if being judged as fine day, the incident sun spoke of the normalization for the weather condition
Penetrate value and fine day threshold value；If the normalization incident solar radiation value is not less than the fine day threshold value, the target area is confirmed
Weather of the domain in the target date is complete fine day.
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| CN201810633322.8A CN109031473B (en) | 2018-06-19 | 2018-06-19 | Automatic judgment method and device for completely sunny days |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN109975892A (en) * | 2019-04-18 | 2019-07-05 | 成都信息工程大学 | A kind of automatic identifying method of Cold Wave Weather 500hPa Circulation |
| CN113772888A (en) * | 2021-09-18 | 2021-12-10 | 湖南绍勋新能源科技有限公司 | Sewage treatment system based on solar energy combined energy supply |
| CN114925997A (en) * | 2022-05-09 | 2022-08-19 | 江西省农业科学院农业工程研究所 | Method for screening effective data of multispectral sensor of farmland internet of things |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109542129A (en) * | 2018-12-13 | 2019-03-29 | 沈阳佳晔能源科技股份有限公司 | A kind of photovoltaic two dimension braking tracking control system |
| CN109975892A (en) * | 2019-04-18 | 2019-07-05 | 成都信息工程大学 | A kind of automatic identifying method of Cold Wave Weather 500hPa Circulation |
| CN109975892B (en) * | 2019-04-18 | 2020-04-14 | 成都信息工程大学 | Automatic identification method for 500hPa circulation situation in cold tide weather |
| CN113772888A (en) * | 2021-09-18 | 2021-12-10 | 湖南绍勋新能源科技有限公司 | Sewage treatment system based on solar energy combined energy supply |
| CN114925997A (en) * | 2022-05-09 | 2022-08-19 | 江西省农业科学院农业工程研究所 | Method for screening effective data of multispectral sensor of farmland internet of things |
| CN114925997B (en) * | 2022-05-09 | 2024-03-19 | 江西省农业科学院农业工程研究所 | Method for screening effective data of multispectral sensor of farmland Internet of things |
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