JPH11231068A - Cumulonimbus generation alarming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a Comulonimbus generation alarming device capable of automatically judging whether there is and may be a Comulonimbus or not on the basis of cloud amount information obtained by a radar and giving information as visual information. SOLUTION: A cloud density calculation part 130 to calculate a cloud density for every cloud group on the basis of cloud amount information 119 from an airport monitoring radar 110, a cloud density storage part 140 to store cloud density information 139 for every cloud group, a first Comulonimbus judgement part 150 to judge whether the cloud group may be a Comulonimbus or not on the basis of the present cloud density and output Comulonimbus alarm information 159, if it may be, and an operation start signal 158 to a second Comulonimbus judgement part 160, if it may be not, the second Comulonimbus judgement part 160 to judge whether the cloud group can grow to a Comulonimbus or not on the basis of a cloud density information history 149 stored in the cloud density storage part 140, when receiving the operation start signal, and output Comulonimbus attention information 169, if it can be, and a display 190 are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cumulonimbus generation and warning device for weather information processing, and more particularly to a cumulonimbus generation and warning device for alarming the occurrence of cumulonimbus clouds based on cloud amount information obtained from air traffic control radar information.

[0002]

2. Description of the Related Art Conventionally, for example, in air traffic control, a meteorological information processing apparatus of this kind which has been used to determine whether or not a cumulonimbus cloud has occurred or has a possibility of occurrence has generally been configured as shown in FIG. I was FIG. 8 is a block diagram of a conventionally used weather information processing apparatus.

[0003] In FIG. 8, a weather information processing device 320 is a cloud information 3 based on radar information of an airport surveillance radar 310.
19, a cloud amount map 338 indicating the cloud amount of each region obtained by dividing the radar coverage into a grid is generated and supplied to the display control device 370. The display control device 370 generates display data 379, Display data is displayed on the display device 390 via the bus 385.

An air traffic controller has empirically predicted the presence or absence of cumulonimbus clouds and the possibility of development thereof from the cloud amount information displayed on the display device 390 and its temporal transition.

[0005]

As described above, in the conventional meteorological information processing, the presence or absence of cumulonimbus clouds or the possibility of the development of cumulonimbus clouds is not predicted from cloud amount information.
There is a problem that an air traffic controller needs to constantly monitor or make a decision based on a report from an aircraft pilot.

For this reason, the air traffic controller is always burdened with monitoring the presence or absence and the possibility of the occurrence of cumulonimbus clouds, and not all cumulonimbus clouds can be grasped even by a report from the pilot, resulting in instability. There was a problem that there is.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cumulonimbus generation alarm device that automatically determines the presence or absence of a cumulonimbus cloud based on cloud amount information obtained from a radar and provides information as visual information on a display device. To provide.

[0008]

According to the present invention, a cumulonimbus cloud generation warning device for warning the occurrence of cumulonimbus clouds in meteorological information processing, comprising: a processing unit for generating display information from cloud amount information; The control unit includes a control unit that controls processing of the processing unit, a recording medium that records control information of the control unit, and a display device that displays display data at a predetermined location based on the display information. The processing unit calculates the cloud amount value for each area where the radar coverage is divided into a grid based on the cloud amount information from the airport surveillance radar, and calculates the cloud density for each cloud group as a continuous cloud cluster as one cloud group. A cloud density calculator for calculating,
A cloud density storage unit that stores the cloud density as a history for each cloud group for a predetermined time, and determines the possibility of a cumulonimbus cloud for each cloud group based on the current cloud density, and if there is a possibility, a cumulonimbus cloud generation alarm A first cumulonimbus deciding unit that outputs information and outputs an operation start signal of the second cumulonimbus turbulence judging unit when there is no possibility; A second cumulonimbus determining unit that determines whether the cloud group may grow into cumulonimbus based on the history and outputs cumulonimbus occurrence caution information if there is a possibility.

The cloud density value calculated by the cloud density calculation unit based on the cloud density information is classified into a plurality of types of the cloud density according to a predetermined standard.
It may be a numerical value that defines each classification, or a continuous absolute value indicating the amount of cloudiness.

In the first cumulonimbus cloud determination unit, the possibility of the cloud cloud being a cumulonimbus cloud is determined by comparing the current cloud density of the cloud cloud with a preset cumulonimbus cloud density determination value. When the current cloud density is large, it is preferable to determine that cloud group is a cumulonimbus cloud.

In the second cumulonimbus cloud judging unit, the judgment as to whether there is a possibility of growing into a cumulonimbus cloud for the cloud group is based on the cloud density history stored in the cloud density storage unit. Calculate the cloud density increase rate by dividing by the cloud density, compare the cloud density increase rate with a preset cumulonimbus cloud increase rate judgment value, and if the current cloud density increase rate of the cloud group is large, It is preferable to determine that the cloud population may develop into cumulonimbus clouds.

The processing section has an alarm information display processing section and a caution information display processing section. When the alarm information display processing section receives the cumulonimbus cloud generation alarm information, the alarm information display processing section outputs alarm display data to a display device. The information display processing unit outputs caution display data to the display device when the cumulonimbus cloud generation caution information is received, the display device may display a message, and the display device has a display control unit and a display unit. The control unit outputs alarm display data to the display unit when receiving the cumulonimbus cloud generation warning information from the first cumulonimbus cloud determination unit, and displays the caution display data on the display unit when receiving the cumulonimbus cloud generation caution information from the second cumulonimbus cloud determination unit. Output, and the display unit may display a message.

This weather information processing may be weather information processing for air traffic control.

According to the present invention, there is provided a cumulonimbus cloud generation warning apparatus, which is an information processing apparatus used in a radar system, based on cloud amount information obtained from radar information, whether or not cumulonimbus clouds are generated and whether or not cumulonimbus clouds are likely to occur. Judge
It is characterized in that an alarm display can be displayed on the display device when there is a possibility.

As described above, according to the present invention, whether or not the cloud is a cumulonimbus cloud is determined based on the cloud amount information obtained from the radar information. For example, when the cloud is used for air traffic control,
At present, it is possible for an air traffic controller to automatically determine the information on the occurrence of cumulonimbus clouds to be avoided in control, which is obtained by a report from a pilot. As a result, the airspace subject to traffic control restrictions is clarified in advance, so that the accuracy of air traffic flow prediction is improved and the efficiency of traffic control is improved. In addition, since the controller can be recognized by visual information based on a change in the display format before the voice notification from the pilot, the load on the controller can be reduced.

[0016]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a cumulonimbus cloud generation warning device according to a first embodiment of the present invention.
In the first embodiment, a cumulonimbus generation / warning apparatus used for weather information processing in air traffic control will be described. However, the cumulonimbus / cloud occurrence warning apparatus is not limited to air traffic control.

In FIG. 1, a cumulonimbus cloud generation warning device 120 provided in an air traffic control weather information processing device includes a processing unit 121 for generating display data 179 from cloud amount information 119,
A control unit 122 for controlling the processing of the processing unit 121, a control unit 1
And a display device 190 for displaying the display data 179 at a predetermined location.
Having.

The processing section 121 includes a cloud density calculation section 130, a cloud density storage section 140, a first cumulonimbus cloud judging section 150, a second cumulonimbus cloud judging section 160, an alarm information display control section 170, and a caution information display control section 180. Consists of

The cloud density calculation unit 130 replaces the cloud distribution with a cloud amount value on a predetermined basis based on the cloud amount information 119 included in the radar information of the airport surveillance radar 110 according to an instruction from the control unit 122, and As a single cloud group, the whole is divided into several cloud groups, and the cloud density, which is the average of the cloud amount values for each cloud group, is calculated and output to the cloud density storage unit 140 as cloud density information 139 I do.

The cloud density storage section 140 stores the cloud density calculated by the cloud density calculation section 130 for each cloud group as a history for a predetermined time, and outputs the input cloud density information 139 to the first cumulonimbus cloud determination section 150.

A first cumulonimbus cloud judging unit 150 judges the possibility of a cumulonimbus cloud for each cloud group based on the current cloud density input from the cloud density storage unit 140, and when there is a possibility, a cumulonimbus cloud generation alarm. The information 159 is output to the alarm information display control unit 170, and if there is no information, the operation start signal 158 is output to the second cumulonimbus cloud determination unit 160.

Upon receiving the operation start signal 158, the second cumulonimbus judging section 160 determines whether the cloud group may grow into a cumulonimbus cloud based on the cloud density history stored in the cloud density storage section 140. It is determined, and if there is a possibility, cumulonimbus occurrence caution information 169 is output to the caution information display controller 180.

The alarm information display control section 170 creates alarm display data based on the cumulonimbus cloud occurrence warning information 159, and the caution information display control section 180 creates caution display data based on the cumulonimbus cloud occurrence caution information 169. The display data 179 is transmitted to a predetermined display device 190 via the data bus 185.

The display device 190 receives the display data 17
From step 9, an alarm message and a caution message are displayed on the screen based on the alarm display data and the caution display data.

Next, the processing performed by the cloud density calculating section 130, the first cumulonimbus cloud judging section 150, and the second cumulonimbus cloud judging section 160 of the cumulonimbus cloud occurrence warning device 120 of the present invention will be described in detail.

FIG. 2 is a detailed block diagram of the cloud density calculator 130 of FIG. Referring to FIG. 2, the cloud distribution recognizing unit 131 determines a certain amount of cloud amount in each of the regions obtained by dividing the radar coverage into a grid based on the cloud amount information 119 supplied from the airport surveillance radar 110. According to the standard, if the data indicates “large”, “3”, “small”
"2" for data indicating "1", "1" for data indicating "slight", and "0" for data indicating "none"
Is defined as the cloud amount value 137.

The cloud distribution dividing section 132 has a cloud distribution recognizing section 131.
Based on the cloud distribution recognition result of, the area that changes from the cloud amount value “0” is searched, and the cloud distribution is divided into several cloud groups in which the area of “1” or more is continuous. The data is sent to the density calculation unit 133 and the whole is sent to the display device 190 via the data bus 185 as the cloud amount map 138.

The cloud density calculation unit 133 includes a cloud distribution division unit 132
For each cloud group divided by, the cloud amount value 13 of the included region
7 is calculated, and the sum is divided by the number of grids to calculate the cloud density, which is output to the cloud density storage unit 140 as cloud density information 139.

FIG. 3 shows the first cumulonimbus cloud judging section 15 shown in FIG.
0 is a detailed block diagram of FIG. In FIG. 3, a cumulonimbus cloud density determination value 157 serving as a reference for judging a cumulonimbus cloud.
Are set in advance and stored in the storage unit 153, and are read out to the comparison unit 152 therefrom.

The comparing unit 152 calculates the cloud density of each cloud group via the cloud density storage unit 140 for each cloud group.
The cumulonimbus cloud density determination value 157 read from the storage unit 153 is subtracted from the cloud density of the cloud density information 139 input from 0, and the resulting subtraction value 156 is sent to the determination unit 154.

If the value is 0 or more, the judging section 154 judges that the cloud is a cumulonimbus cloud, and supplies cumulonimbus occurrence warning information 159 to the alarm information display control section 170. If it is equal to or less than 0, the operation start signal 158 is supplied to the second cumulonimbus deciding unit 160.

FIG. 4 shows the second cumulonimbus cloud judging section 16 shown in FIG.
0 is a detailed block diagram of FIG. The cloud density information history 149 for the past 30 minutes of the cloud density is stored in the cloud density storage unit 140 in FIG.
The history of the cloud density required for 0 is read from it. Here, the recording period is set to 30 minutes, but the recording period is not limited to 30 minutes.

In response to the operation start signal 158 from the first cumulonimbus cloud judging section 150, the increase rate calculating section 161 obtains the cloud group that is not judged to be cumulonimbus from the read cloud density information history 149. By dividing the current cloud density by the cloud density before a predetermined time, the cloud density increase rate 16
5 is calculated.

The comparing section 162 reads out the predetermined cumulonimbus cloud growth rate determination value 167 stored in the storage section 163, subtracts it from the cloud density growth rate input from the growth rate calculation section 161 and determines the subtraction value 166. Output to the unit 164.

If the value is 0 or more,
The cloud cloud is determined to have the potential to develop into cumulonimbus clouds,
The cumulonimbus occurrence caution information 169 is transmitted to the caution alarm
Output to

FIG. 5 is a schematic diagram showing an example of a display data screen displayed on the display device 190 of FIG. Based on the received alarm display data and caution display data, the display device 190 changes the alarm message 193 to “ALAR” if it is an alarm according to the cloud amount map 138 of the cloud group on the screen.
As "M", if it is cautionary, "WARNING" is superimposed and displayed together with the cloud amount map 138 displayed on the screen, the target display 117 which is the data of the aircraft, the velocity reader 116, and the like.

Although the configuration of the cumulonimbus cloud generation warning device of the first embodiment has been described in detail above, the airport surveillance radar 1 shown in FIG.
Since 10 is well known to those skilled in the art and is not directly related to the present invention, a detailed description of its configuration will be omitted. In the above embodiment, a weather radar may be used as the airport monitoring radar 110.

The data bus 185 can be composed of a plurality of serial communication lines. Further, the alarm information display control unit 170 and the caution information display control unit 180 can be shared as a display control unit.

Next, the operation of the cumulonimbus cumulonimbus alarm for air traffic control of FIG. 1 will be described with reference to the flowchart of FIG. 6 showing the operation of the cumulonimbus cumulonimbus alarm of the present invention.

When the cumulonimbus cloud generator 120 starts operating according to an instruction from the control unit 122 (S101), the cloud density calculation unit 130 fetches the cloud amount information 119 from the airport surveillance radar 110 (S102). The radar coverage is divided into grid-like areas of a predetermined size, and the amount of cloud in each area is determined as a cloud amount 137 on a predetermined basis (S103). Cloud Cover 137
Then, the entire cloud is divided into cloud groups in which a certain area of the cloud is continuous (S104).

A cloud group is selected in accordance with an instruction from the control unit 122 (S105), and the cloud density of the cloud group is calculated by dividing the sum of the cloud amount values of each area by the number of areas for each cloud group (S10).
6). The cloud density is recorded as cloud density information 139 for each cloud group in the cloud density storage unit 140, and a recorded value for a predetermined time is stored to create a cloud density information history, and the current cloud density information 1 is stored.
39 is transmitted to the first cumulonimbus cloud judging section 150 (S10).
7).

The first cumulonimbus cloud judging section 150 compares the cloud density of the cloud group with a predetermined cloud density judgment value 157, and if the cloud density of the cloud group is large (S108Y).
es), it is determined that the clouds of the cloud group are cumulonimbus clouds, and the alarm information display control unit 170 displays an alarm display message 193 on the display device 190 (S109).

The cloud density of the cloud group is the cloud density determination value 157
If smaller (S108 No), the operation start signal 158
Is transmitted to the second cumulonimbus cloud judging section 160, and the second cumulonimbus cloud judging section 160 calculates the cloud density increase rate from the change in the cloud density amount of the cloud group taken from the cloud density storage section 140 at predetermined time intervals. It is calculated (S110), and the cloud density increase rate of the cloud group is compared with a predetermined increase rate determination value. If the cloud density increase rate of the cloud group is large (S111Ye)
s), it is determined that the clouds of the cloud group may develop into cumulonimbus clouds, and the caution information display control unit 180 causes the display device 1
A warning display message is displayed at 90 (S112).

Steps S109, S112 and S11
After the operation of 1No, it is confirmed whether or not the determination has been completed for all cloud groups. If the determination has not been completed (No in S113), the process returns to step S105, and the processing is repeated. If the determination has been completed (Yes in S113), the radar coverage area has been determined. One determination for the whole is completed, and unless the determination operation is to be completed (S
114No), returning to step S102 to repeat the processing. If the determination is to be terminated (Yes in S114), the operation is terminated (S115).

The control program is read from the recording medium 129 to a data processing device (not shown) of the control unit 122 and controls the operation of the data processing device. The control unit 122 executes the following processing under the control of the control program.

That is, the cloud density calculation unit 130 fetches the cloud amount information 119 from the airport surveillance radar 110, divides the radar coverage into a grid-like area of a predetermined size, and determines the amount of cloud in each area according to a predetermined standard. A process that divides the whole cloud into each cloud group where the area with the cloud is continuous according to the cloud amount value, selects the cloud group, and calculates the sum of the cloud amount values of each area for each cloud group according to the cloud amount value. , The cloud density of the cloud group is calculated, the cloud density is recorded in the cloud density storage unit 140 for each cloud group, the recorded value for a predetermined time is stored, and the cloud density information is stored in the first cumulonimbus cloud. The processing to be sent to the determination unit 150 and the first cumulonimbus cloud determination unit 150 compare the cloud density of the cloud group with a predetermined cloud density determination value. If the cloud density of the cloud group is large, the cloud group Is determined to be cumulonimbus,
A process of displaying an alarm display message on the display device 190 by the alarm information display control unit 170; and, if the cloud density of the cloud group is smaller than the cloud density determination value, sending an operation start signal to the second cumulonimbus cloud determination unit 160; Second cumulonimbus judging unit 16
0 is a cloud density increase rate calculated from a change in cloud density at predetermined time intervals of the cloud group taken from the cloud density storage unit 140, and the cloud density increase rate of the cloud group is set to a predetermined increase rate. Compared with the determination value, if the cloud density increase rate of the cloud group is large, it is determined that the clouds of the cloud group may develop into cumulonimbus clouds, and a warning display message is displayed on the display device 190 by the warning information display control unit 180. And processing to be performed.

Next, another embodiment of the present invention will be described. In the second embodiment, the basic configuration is shown in FIG.
4 to FIG. 4, but the cloud density calculation unit 131 is further devised. That is, in the first embodiment, the amount of cloud of the cloud amount information supplied from the radar is classified into four levels for each area to obtain a cloud amount value. The value of the cloud amount itself is defined as the cloud amount value. If you do,
Since the accuracy of the calculated cloud density is improved, the reliability of the alarm display is improved. Further, the accuracy of the cloud density increase rate calculated using the change in the cloud density is improved, and the accuracy of occurrence prediction is improved, so that the reliability of the caution display is also improved.

FIG. 7 is a block diagram of a cumulonimbus cloud generation warning apparatus according to a third embodiment of the present invention. As shown in FIG. 7, a cloud density calculation unit 230, a cloud density storage unit 240, a first cumulonimbus cloud determination unit 250, and a second cumulonimbus cloud determination unit 260 of the processing unit 221 are the same as those in the first embodiment. However, in the present embodiment, the functions of the alarm information display device 170 and the caution information display control unit 180 of the first embodiment are incorporated in the display device 290, and the display device 290 has the display control unit 291 and the display unit 292. The display device 290 generates display data by directly transmitting cumulonimbus occurrence warning information or caution information to the data bus 185.

[0049]

As described above, according to the present invention, the following effects can be obtained.

The first effect is that since the occurrence of cumulonimbus clouds is determined based on the cloud amount information obtained by radar, a wide range can be determined.

The second effect is that the occurrence of cumulonimbus clouds is automatically determined based on the cloud amount information obtained by radar, so that the controller can recognize the occurrence of cumulonimbus clouds before a report from the aircraft pilot. Can be prevented beforehand, and the load on the controller can be reduced.

The third effect is that since the history of cloud density is stored and the development process is monitored, the occurrence of cumulonimbus clouds can be predicted in advance, and efficient aviation can be performed while avoiding dangerous airspaces in advance. Traffic flow can be planned and the traffic load on the controller can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram of a cumulonimbus cloud generation warning device according to a first embodiment of the present invention.

FIG. 2 is a detailed block configuration diagram of a cloud density calculation unit in FIG. 1;

FIG. 3 is a detailed block configuration diagram of a first cumulonimbus cloud judging section shown in FIG. 1;

FIG. 4 is a detailed block configuration diagram of a second cumulonimbus cloud determination unit shown in FIG. 1;

FIG. 5 is a schematic diagram showing an example of a display data screen displayed on the display device of FIG. 1;

FIG. 6 is a flowchart of the operation of the cumulonimbus cloud generation warning device of the present invention.

FIG. 7 is a block diagram of a cumulonimbus cloud generation warning device according to a third embodiment of the present invention.

FIG. 8 is a block diagram of a conventionally used weather information processing apparatus.

[Explanation of symbols]

 110, 210, 310 Airport surveillance radar 116 Velocity leader 117 Target indication 119, 219, 319 Cloud amount information 120, 220 Cumulonimbus cloud generation warning device 130, 230 Cloud density calculation unit 131 Cloud distribution recognition unit 132 Cloud distribution division unit 133 Cloud density calculation unit 137 Cloud amount value 138, 238, 338 Cloud amount map 139, 239 Cloud density information 140, 240 Cloud density storage unit 149, 249 Cloud density information history 150, 250 First cumulonimbus cloud determination unit 152, 162 Comparison unit 153, 163 Storage unit 154 164 judgment unit 156, 166 subtraction value 157 cumulonimbus cloud density judgment value 158, 258 operation start signal 159, 259 cumulonimbus cloud generation alarm information 160, 260 second cumulonimbus cloud judgment unit 161 increase rate calculation unit 165 increase rate 167 cumulonimbus increase rate judgment value 169, 26 9 Cumulonimbus occurrence caution information 170 Warning information display control unit 179, 379 display data 180 Caution information display control unit 185, 285, 385 Data bus 190, 290, 390 Display device 193 Warning message 291 Sign control unit 292 Display unit 320 Weather information processing Device 370 Display control device S101 to S115 Step

Claims (9)

[Claims] 1. A cumulonimbus cloud generation alarm device for alarming the occurrence of cumulonimbus clouds in weather information processing, comprising: a processing unit for generating display information from cloud amount information; a control unit for controlling processing of the processing unit; A recording medium that records control information of a control unit, and a display device that displays display data at a predetermined location based on the display information, wherein the processing unit transmits the cloud amount information from an airport monitoring radar. A cloud density calculating unit that calculates a cloud amount value for each area obtained by dividing the radar coverage into a lattice based on the cloud coverage, and calculates a cloud density for each cloud group as a continuous cloud cluster as one cloud group; A cloud density storage unit for storing the cloud density as a history for a predetermined time; and determining the possibility of a cumulonimbus cloud for each of the cloud groups based on the current cloud density. Output information A first cumulonimbus determining unit that outputs an operation start signal of a second cumulonimbus judging unit when there is no possibility; receiving the operation start signal, a cloud density history stored in the cloud density storage unit; And a second cumulonimbus determination unit that outputs cumulonimbus generation caution information if there is a possibility that the cloud group may grow into cumulonimbus clouds. apparatus. 2. The cloud amount value obtained by the cloud density calculation unit based on the cloud amount information is a numerical value that classifies a certain amount of cloud amount into a plurality according to a predetermined criterion, and defines each of the classifications. Cumulonimbus cloud alarm. 3. The cumulonimbus cloud occurrence warning device according to claim 1, wherein the cloud amount value obtained by the cloud density calculating section based on the cloud amount information is a continuous absolute value indicating the degree of cloud amount. 4. The method according to claim 1, wherein the first cumulonimbus determination unit determines whether the cloud cloud is a cumulonimbus cloud by comparing a current cloud density of the cloud cloud with a preset cumulonimbus cloud density determination value. 2. The cumulonimbus occurrence warning device according to claim 1, wherein the cloud cloud is determined to be cumulonimbus when the current cloud density of the cloud cloud is high. 5. The determination of whether there is a possibility of growing into a cumulonimbus cloud for the cloud group in the second cumulonimbus cloud determination unit, based on the cloud density history stored in the cloud density storage unit.
A cloud density increase rate is calculated by dividing the current cloud density by the cloud density before a predetermined time, comparing the cloud density increase rate with a preset cumulonimbus cloud increase rate determination value, and 2. The cumulonimbus occurrence warning device according to claim 1, wherein it is determined that the cloud group may develop into cumulonimbus when the current cloud density increase rate is large. 6. The processing unit has an alarm information display processing unit and a caution information display processing unit. The alarm information display processing unit outputs alarm display data to the display device upon receiving the cumulonimbus cloud generation alarm information. 2. The cumulonimbus cloud generation alarm device according to claim 1, wherein the caution information display processing unit outputs caution display data to the display device when the caution cloud generation caution information is received, and the display device displays a message. 7. The display device has a display control unit and a display unit, and when the display control unit receives the cumulonimbus cloud generation alarm information from the first cumulonimbus cloud determination unit, the display unit displays alarm display data on the display unit. And outputting warning display data to the display unit when receiving the cumulonimbus generation caution information from the second cumulonimbus cloud judging unit, and the display unit displays a message.
3. The cumulonimbus cloud generation alarm device according to item 1. 8. The cumulonimbus cloud occurrence warning device according to claim 1, wherein the weather information is weather information for air traffic control. 9. A recording medium in which a control program for alarming the occurrence of cumulonimbus clouds in a cumulonimbus cloud occurrence alarm device is recorded, wherein the cloud density calculation unit fetches cloud amount information from an airport surveillance radar, and sets a radar coverage area to a predetermined size. A procedure for dividing the whole cloud into cloud areas in which a cloud area is continuous from the cloud amount value, dividing the entire cloud area into cloud areas based on a predetermined reference, and Selecting the cloud group, calculating the cloud density of the cloud group by dividing the sum of the cloud amount values of each area of the cloud group by the number of areas, and storing the cloud density in the cloud density storage unit for each cloud group. And storing a recorded value for a predetermined time, and sending cloud density information to a first cumulonimbus cloud judging unit; and setting the cloud density of the cloud group in the first cumulonimbus cloud judging unit in advance. The cloud density of the cloud group is compared with the determined cloud density determination value. If the degree is large, it is determined that the cloud of the cloud group is a cumulonimbus cloud, and a warning display message is displayed on a display device by a warning information display control unit, and the cloud density of the cloud group is smaller than the cloud density determination value. For example, an operation start signal is sent to a second cumulonimbus cloud judging section, and the second cumulonimbus cloud judging section judges a cloud based on a ratio of the cloud density at a predetermined time interval of the cloud group acquired from the cloud density storage section. Calculating the density increase rate, comparing the cloud density increase rate of the cloud group with a predetermined increase rate determination value, and if the cloud density increase rate of the cloud group is large, the cloud of the cloud group becomes a cumulonimbus cloud. A recording medium on which a program for causing a caution information display control unit to display a caution display message on a display device, and a program for executing the caution display message is determined.