Presentation of the monthly mean CM-SAF products Didier Caprion RMIB.
-
Upload
britney-atkins -
Category
Documents
-
view
214 -
download
0
Transcript of Presentation of the monthly mean CM-SAF products Didier Caprion RMIB.
![Page 1: Presentation of the monthly mean CM-SAF products Didier Caprion RMIB.](https://reader035.fdocuments.in/reader035/viewer/2022070415/56649efd5503460f94c10ba7/html5/thumbnails/1.jpg)
Presentation of the monthly mean CM-SAF products
Didier Caprion
RMIB
![Page 2: Presentation of the monthly mean CM-SAF products Didier Caprion RMIB.](https://reader035.fdocuments.in/reader035/viewer/2022070415/56649efd5503460f94c10ba7/html5/thumbnails/2.jpg)
Averages within the RMIB CM-SAF machine
Designed and built by: B Nicalu, N. Clerbaux, S. Dewitte and D. Caprion
![Page 3: Presentation of the monthly mean CM-SAF products Didier Caprion RMIB.](https://reader035.fdocuments.in/reader035/viewer/2022070415/56649efd5503460f94c10ba7/html5/thumbnails/3.jpg)
Overview:
• What do we want ?
• What do we have ?
• Spatial integration of CERES and GERB data (« regridding »)
• Time integration of GERB data
• Building final averages of GERB data
• Merging of CERES and GERB data
• What’s left to do ?
![Page 4: Presentation of the monthly mean CM-SAF products Didier Caprion RMIB.](https://reader035.fdocuments.in/reader035/viewer/2022070415/56649efd5503460f94c10ba7/html5/thumbnails/4.jpg)
What do we want ?
Monthly Mean, Daily Mean and Monthly Mean Diurnal Cycleof the TOA flux radiations for:
Incoming Solar Flux (TIS) Emitted Thermal Flux (TET) Reflected Solar Flux (TRS)
(images from http://www.dwd.de/en/FundE/Klima/KLIS/int/CM-SAF/products/index.htm)
![Page 5: Presentation of the monthly mean CM-SAF products Didier Caprion RMIB.](https://reader035.fdocuments.in/reader035/viewer/2022070415/56649efd5503460f94c10ba7/html5/thumbnails/5.jpg)
What do we have ?
TIS: pre-existing Total Solar Irradiance measurements
TRS/TET: CERES (ES9 data):
Polar satellite – data already averaged
GERB:Geostationary over Europe + AfricaData every 15 minutes
… …
(10th March 2004 - TRS)
14:15 14:30 14:45
Monthly mean March 2004 (TRS)
![Page 6: Presentation of the monthly mean CM-SAF products Didier Caprion RMIB.](https://reader035.fdocuments.in/reader035/viewer/2022070415/56649efd5503460f94c10ba7/html5/thumbnails/6.jpg)
Overview:
• What do we want ?
• What do we have ?
• Spatial integration of CERES and GERB data (« regridding »)
• Time integration of GERB data
• Building final averages of GERB data
• Merging of CERES and GERB data
• What’s left to do ?
![Page 7: Presentation of the monthly mean CM-SAF products Didier Caprion RMIB.](https://reader035.fdocuments.in/reader035/viewer/2022070415/56649efd5503460f94c10ba7/html5/thumbnails/7.jpg)
Spatial integration of CERES and GERB
Size 445 x 890 pixels - resolution: 45.03 km
CERES GERB GERB-like
(if GERB data are missing)
![Page 8: Presentation of the monthly mean CM-SAF products Didier Caprion RMIB.](https://reader035.fdocuments.in/reader035/viewer/2022070415/56649efd5503460f94c10ba7/html5/thumbnails/8.jpg)
Overview:
• What do we want ?
• What do we have ?
• Spatial integration of CERES and GERB data (« regridding »)
• Time integration of GERB data
• Building final averages of GERB data
• Merging of CERES and GERB data
• What’s left to do ?
![Page 9: Presentation of the monthly mean CM-SAF products Didier Caprion RMIB.](https://reader035.fdocuments.in/reader035/viewer/2022070415/56649efd5503460f94c10ba7/html5/thumbnails/9.jpg)
Time integration of GERB dataTRS: 10th March 2004
13:45 14:00 14:3014:15 15:0014:45
offset: acquisition timedifferent for each line
Average through integration
measured
extrapolated
14:00
![Page 10: Presentation of the monthly mean CM-SAF products Didier Caprion RMIB.](https://reader035.fdocuments.in/reader035/viewer/2022070415/56649efd5503460f94c10ba7/html5/thumbnails/10.jpg)
Time integration of GERB data what does it imply ?
Weighted average
Central points always contribute to ¼
Extreme points contribute according to offset (o) and interval time ()
e.g. when offset is equal to zero :First and last points contribute to 1/8, all others to 1/4
![Page 11: Presentation of the monthly mean CM-SAF products Didier Caprion RMIB.](https://reader035.fdocuments.in/reader035/viewer/2022070415/56649efd5503460f94c10ba7/html5/thumbnails/11.jpg)
Time integration of GERB data case of missing data
No data within the interval
No data in output
Just one data within the interval
Final value is a copy of this unique data
More than one data within the interval
integration
![Page 12: Presentation of the monthly mean CM-SAF products Didier Caprion RMIB.](https://reader035.fdocuments.in/reader035/viewer/2022070415/56649efd5503460f94c10ba7/html5/thumbnails/12.jpg)
Overview:
• What do we want ?
• What do we have ?
• Spatial integration of CERES and GERB data (« regridding »)
• Time integration of GERB data
• Building final averages of GERB data
• Merging of CERES and GERB data
• What’s left to do ?
![Page 13: Presentation of the monthly mean CM-SAF products Didier Caprion RMIB.](https://reader035.fdocuments.in/reader035/viewer/2022070415/56649efd5503460f94c10ba7/html5/thumbnails/13.jpg)
Building final averages
x
x
x x
x
x
x x
xx
x
x
x x
x
x
30/3
1 da
ys
24 hours
x x
x
x
x x
xx
x
x
x x
x
x
Monthly Mean Diurnal Cycle Monthly Mean
Daily Meanx
x
x
x
![Page 14: Presentation of the monthly mean CM-SAF products Didier Caprion RMIB.](https://reader035.fdocuments.in/reader035/viewer/2022070415/56649efd5503460f94c10ba7/html5/thumbnails/14.jpg)
Overview:
• What do we want ?
• What do we have ?
• Spatial integration of CERES and GERB data (« regridding »)
• Time integration of GERB data
• Building final averages of GERB data
• Merging of CERES and GERB data
• What’s left to do ?
![Page 15: Presentation of the monthly mean CM-SAF products Didier Caprion RMIB.](https://reader035.fdocuments.in/reader035/viewer/2022070415/56649efd5503460f94c10ba7/html5/thumbnails/15.jpg)
Merging of CERES and GERB data
+
=
CERES GERB
Applying mask
![Page 16: Presentation of the monthly mean CM-SAF products Didier Caprion RMIB.](https://reader035.fdocuments.in/reader035/viewer/2022070415/56649efd5503460f94c10ba7/html5/thumbnails/16.jpg)
What’s left to do ?
Launch the CM-SAF machine (operational service)
Switch from CERES ES9 data to SRBAVG data(better resolution)
Quantify the errors due to the missing data strategy- substitution by the GERB-like data- (better GERB-like data ?)- integration scheme with few data