CN104833975A - Method for determining test samples in artificial precipitation random test - Google Patents
Method for determining test samples in artificial precipitation random test Download PDFInfo
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- CN104833975A CN104833975A CN201510241434.5A CN201510241434A CN104833975A CN 104833975 A CN104833975 A CN 104833975A CN 201510241434 A CN201510241434 A CN 201510241434A CN 104833975 A CN104833975 A CN 104833975A
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- China
- Prior art keywords
- target area
- radar return
- test sample
- area
- contrast district
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- 238000012360 testing method Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000001556 precipitation Methods 0.000 title claims abstract description 16
- 238000009792 diffusion process Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract 3
- 238000006555 catalytic reaction Methods 0.000 abstract 2
- JKFYKCYQEWQPTM-UHFFFAOYSA-N 2-azaniumyl-2-(4-fluorophenyl)acetate Chemical compound OC(=O)C(N)C1=CC=C(F)C=C1 JKFYKCYQEWQPTM-UHFFFAOYSA-N 0.000 description 5
- 229910021612 Silver iodide Inorganic materials 0.000 description 5
- 229940045105 silver iodide Drugs 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 3
- 235000015842 Hesperis Nutrition 0.000 description 2
- 235000012633 Iberis amara Nutrition 0.000 description 2
- ICIWUVCWSCSTAQ-UHFFFAOYSA-M iodate Chemical compound [O-]I(=O)=O ICIWUVCWSCSTAQ-UHFFFAOYSA-M 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000000528 statistical test Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/95—Radar or analogous systems specially adapted for specific applications for meteorological use
- G01S13/951—Radar or analogous systems specially adapted for specific applications for meteorological use ground based
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a method for determining test samples in an artificial precipitation random test, and belongs to the field of artificial precipitation effect examination. The method comprises two steps, i.e., a sample determination step and a target area and contrast area determination step. Improvements are mainly made in the target area and contrast area determination step, and a radar movement axis is determined as an artificial precipitation target area and a contrast area; and on the basis of the radar movement axis, in a rocket bomb catalysis area, a target area of rocket catalysis is determined, a contrast area is determined in the radar movement axis in an operation upwind direction, and a method for determining the rocket operation activity target area and the contrast area is formed. According to the invention, the target area and the contrast area are determined more conveniently by use of the method, and statistics examination of operation effects is facilitated. According to the method provided by the invention, rainfall weather processes according with ground artificial precipitation conditions are determined as the random test samples, operation lot drawing is carried out randomly within the samples, the amount of the test samples is greatly increased, the selection process of the test samples is simplified, and the test period is greatly shortened.
Description
Technical field
The present invention relates to Effectiveness Evaluation of Artificial Precipitation Enhancement field, particularly in a kind of random test of increasing rain artificially, determine the method for test sample.
Background technology
Random test of increasing rain artificially is a kind of method of carrying out Effectiveness Evaluation of Artificial Precipitation Enhancement of statistician's accreditation in the world.Because China is in the demand to water resource and drought resisting, all artificial snowfall operation can be implemented to suitable synoptic process of increasing rain artificially.And random test requirement of increasing rain artificially is drawn lots to the synoptic process meeting operating condition, thus the operation process abandoning half does not carry out operation, and this implements to China engineering of increasing rain artificially is a major challenge.
Implementing generally to adopt region to return the method such as random test or random cross-random test when increasing rain artificially the inspection of random test.But these methods all require to adopt fixed target district and contrast district.Because operative goals cloud moving direction is widely different, if only carry out lot to the operative goals cloud in same path to determine whether operation, by the number of limit assay sample greatly with extend the cycle reaching testing requirements sample number, thus the random test that makes to increase rain artificially is difficult to carry out.The method in moving target district and contrast district is selected in this invention by improving, solve target cloud mobile route difference, test sample is not enough and the problem of shortening test period.
Summary of the invention
Increasing to make up existing ground artificial the deficiency that in rain random test, operative goals cloud mobile route is different, test sample is few and the test period is long, the invention provides a kind of method determining test sample in random test of increasing rain artificially; Wherein particularly shift to axis with radar return to determine to increase rain artificially the method for target area and contrast district.The precipitation weather process meeting ground artificial increasing rain condition is defined as random test sample by the method, can carry out operation lot at random in sample.
Technical scheme of the present invention is:
In the method determining test sample in random test of increasing rain artificially, implementation step is:
A determines random test sample;
Determine the precipitation weather process meeting artificial precipitation condition: select area be not less than 400 square kilometres, radar echo intensity be greater than 25dBZ, cloud-top temperature lower than-8 DEG C, the height of cloud base cloud sector that is less than 1000 meters is defined as random test sample;
B shifts to axis with radar return and determines increase rain artificially target area and contrast district;
1) determine that radar return shifts to axis;
2) that determines rocket release catalyzer sows line;
3) shift to axis according to described radar return and sow line determination target area; Described target area is quadrilateral, and axisymmetrical distribution is shifted to relative to radar return in target area; Simultaneously described target area initial sideline with sow line and overlap, target area is positioned at catalyzer diffusion region and is positioned at the downstream direction that radar return shifts to axis;
4) shift to axis according to described target area and radar return and determine contrast district; Described contrast district and target area equal and opposite in direction, shape are identical, and described contrast district and target area are separated by least 40 kilometers; Described contrast district is positioned at the updrift side that radar return shifts to axis, and shifts to axisymmetrical distribution relative to radar return.
Preferably, in steps A, select that area is greater than 400 square kilometres, radar echo intensity is 25 ~ 55dBZ, cloud-top temperature is-8 ~-15 DEG C, cloud sector that the height of cloud base is less than 1000 meters is defined as random test sample.The sample of this condition can improve sensitivity and the accuracy of the inventive method test.
Preferably, in step B, described target area and contrast district are rectangular region.
Further, in step B, the spacing between described contrast district and target area is 40 ~ 50 kilometers.This setting both can ensure to eliminate silver iodide in rocket projectile and, to the pollution of contrast district, contrast accuracy with the not too large increase of time interval.
As preferably, in step B, the length that axis direction is shifted to along radar return in described target area and contrast district is 40 ~ 50 kilometers.Guarantee that target area is positioned at catalyzer diffusion region.
Beneficial effect of the present invention is:
The precipitation weather process meeting ground artificial increasing rain condition is defined as random test sample by the method, operation lot can be carried out at random in sample, determine the operation sample in random test, significantly increase the quantity of test sample, simplify the selection course of test sample, thus substantially reduce the test period.The present invention is that China carries out ground artificial and increases rain random test and provide a great convenience.
The result of numerical simulation is carried out according to cold cloud seeding with rockets agent line source diffusion equation, shift to based on axis by radar return, in rocket projectile catalytic domain, determine the target area of seeding with rockets, shift on axis at operation windward side radar return and determine contrast district, form the defining method of a kind of rocket operation moving target district and contrast district; The statistical test carrying out operation effectiveness conveniently, is convenient in the method determination target area and contrast district; The target area that the method is determined simultaneously is all positioned at silver iodide diffusion region, realizes all standing of silver iodide diffusion region to target area; Contrast district and target area are separated by far, and in elimination rocket projectile, silver iodide are to the pollution of contrast district; The validity check accuracy of the contrast district that employing the method is selected and target area is high.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
To be the present invention shift to axis with radar return to Fig. 1 determines to increase rain artificially the structural representation of target area and contrast district method.
Embodiment
Embodiment 1
In the method determining test sample in random test of increasing rain artificially, implementation step is:
A determines random test sample;
Determine the precipitation weather process meeting artificial precipitation condition: select area be not less than 400 square kilometres, radar echo intensity be greater than 25dBZ, cloud-top temperature lower than-8 DEG C, the height of cloud base cloud sector that is less than 1000 meters is defined as random test sample;
Certainly, in order to increase sensitivity and the accuracy of Effectiveness Evaluation of Artificial Precipitation Enhancement, preferably selecting that area is not less than 400 square kilometres, radar echo intensity is 25 ~ 55dBZ, cloud-top temperature is-8 ~-15 DEG C, cloud sector that the height of cloud base is less than 1000 meters is defined as random test sample.
B as shown in Figure 1, shifts to axis with radar return and determines increase rain artificially target area and contrast district;
1) determine that radar return shifts to axis 4 according to radar return 5;
2) that determines rocket release catalyzer sows line 2;
3) shift to axis 4 according to radar return and sow line 2 and determine target area 3;
Target area 3 is rectangle, and to shift to axis 4 relative to radar return symmetrical in target area 3; Simultaneously on the left of target area 3 sideline (initial sideline) with sow line 2 and overlap, target area 3 is positioned at catalyzer iodate sliver diffusion district and is positioned at the downstream direction that radar return shifts to axis; As shown in Figure 1, the region of encircling a city on the left of dotted line and target area 3 is catalyzer iodate sliver diffusion district;
4) shift to axis 4 according to target area 3 and radar return and determine contrast district 1;
Contrast district 1 and target area 3 equal and opposite in direction, shape are identical, and it is 40-45 kilometer that contrast district 1 and target area 3 are parallel to the length of side that radar return shifts to axis 4, and this length guarantees that target area 3 is positioned at catalyzer diffusion region; Contrast district 1 is positioned at the updrift side (that is, as shown in Figure 1, contrast district 1 is positioned at the left side of target area 3) that radar return shifts to axis, and shifts to axisymmetrical distribution relative to radar return.On the right side of contrast district 1, on the left of sideline and target area 3, sideline is separated by 40-45 kilometer, and this setting both can ensure to eliminate silver iodide in rocket projectile and, to the pollution of contrast district, check accuracy with not too large increases of time interval.
Claims (5)
1. in the method determining test sample in random test of increasing rain artificially, it is characterized in that, implementation step is:
A determines random test sample;
Determine the precipitation weather process meeting artificial precipitation condition: select area be not less than 400 square kilometres, radar echo intensity be greater than 25dBZ, cloud-top temperature lower than-8 DEG C, the height of cloud base cloud sector that is less than 1000 meters is defined as random test sample;
B shifts to axis with radar return and determines increase rain artificially target area and contrast district;
1) determine that radar return shifts to axis;
2) that determines rocket release catalyzer sows line;
3) shift to axis according to described radar return and sow line determination target area; Described target area is quadrilateral, and axisymmetrical distribution is shifted to relative to radar return in target area; Simultaneously described target area initial sideline with sow line and overlap, target area is positioned at catalyzer diffusion region and is positioned at the downstream direction that radar return shifts to axis;
4) shift to axis according to described target area and radar return and determine contrast district; Described contrast district and target area equal and opposite in direction, shape are identical, and described contrast district and target area are separated by least 40 kilometers; Described contrast district is positioned at the updrift side that radar return shifts to axis, and shifts to axisymmetrical distribution relative to radar return.
2. as claimed in claim 1 in the method determining test sample in random test of increasing rain artificially, it is characterized in that: in steps A, select that area is greater than 400 square kilometres, radar echo intensity is 25 ~ 55dBZ, cloud-top temperature is-8 ~-15 DEG C, cloud sector that the height of cloud base is less than 1000 meters is defined as random test sample.
3. as claimed in claim 1 in the method determining test sample in random test of increasing rain artificially, it is characterized in that: in step B, described target area and contrast district are rectangular region.
4. as claimed in claim 3 in the method determining test sample in random test of increasing rain artificially, it is characterized in that: in step B, the spacing between described contrast district and target area is 40 ~ 50 kilometers.
5. as claimed in claim 3 in the method determining test sample in random test of increasing rain artificially, it is characterized in that: in step B, the length that axis direction is shifted to along radar return in described target area and contrast district is 40 ~ 50 kilometers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510241434.5A CN104833975B (en) | 2015-05-13 | 2015-05-13 | Method for determining test samples in artificial precipitation random test |
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| CN201510241434.5A CN104833975B (en) | 2015-05-13 | 2015-05-13 | Method for determining test samples in artificial precipitation random test |
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| CN104833975A true CN104833975A (en) | 2015-08-12 |
| CN104833975B CN104833975B (en) | 2017-05-03 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1845171A (en) * | 2006-02-23 | 2006-10-11 | 山东省气象科学研究所 | Prefecture-level artificial rainfall hail-proof service technique system |
-
2015
- 2015-05-13 CN CN201510241434.5A patent/CN104833975B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1845171A (en) * | 2006-02-23 | 2006-10-11 | 山东省气象科学研究所 | Prefecture-level artificial rainfall hail-proof service technique system |
Non-Patent Citations (2)
| Title |
|---|
| 周国华 等: ""两次不同作业对象的火箭人工增雨作业效果评估分析"", 《第十五届全国云降水与人工影响天气科学会议论文集（II）》 * |
| 迟竹萍 等: ""利用数字化雷达回波参数分析人工增雨播云条件"", 《气象》 * |
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| CN104833975B (en) | 2017-05-03 |
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Denomination of invention: A method for determining test samples in artificial precipitation enhancement random test Effective date of registration: 20211221 Granted publication date: 20170503 Pledgee: Laishang Bank Co.,Ltd. Heze Chengwu sub branch Pledgor: Chengwu Dadi Corn Development Co.,Ltd. Registration number: Y2021980015769 |
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Denomination of invention: A Method for Determining Test Samples in Random Experiments of Artificial Rainfall Enhancement Granted publication date: 20170503 Pledgee: Shandong Chengwu Rural Commercial Bank Co.,Ltd. Pledgor: Chengwu Dadi Corn Development Co.,Ltd. Registration number: Y2024980002063 |
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