Evaluation and Improvement of FY-4A AGRI Quantitative Precipitation Estimation for Summer Precipitation over Complex Topography of Western China
Abstract
:1. Introduction
2. Materials and Methods
3. Results
3.1. Validation of NSMC QPE
3.2. Improvement of QPE Algorithm Based on the FY-4A AGRI
3.2.1. Cloud Classification
3.2.2. Improvements of QPE Algorithm
3.3. Validations of Improved QPE Algorithm Based on the FY-4A AGRI
4. Discussion
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
Appendix A
Abbreviate | Full Name |
---|---|
AE | auto-estimator |
AGRI | Advanced Geosynchronous Radiation Imager |
AVHRR | Advanced Very High Resolution Radiometer |
CC | correlation coefficient |
CDF | cumulative distribution function |
CIMISS | China Integrated Meteorological Information Sharing Service platform |
CST | convective-stratiform technique |
FY-2 | Fenyun-2 |
FY-4A | Fengyun-4A |
GEO | geostationary |
GMSRA | GOES multispectral rainfall algorithm |
GOES-R | Geostationary Operational Environmental Satellite R series |
GPI | GOES precipitation index |
HE | hydro-estimator |
IR | infrared |
LEO | low earth orbiting |
LWIR | long-wave infrared |
LST | local standard time |
MAE | mean absolute error |
MARE | mean absolute relative error |
ME | mean error |
MICAPS | Meteorological Information Comprehensive Analysis and Processing System |
MRE | mean relative error |
MWIR | medium-wave infrared |
NESDIS | National Environmental Satellite Data and Information Service |
NOAA | National Oceanic and Atmospheric Administration |
NSMC | National Satellite Meteorological Center |
probability density function | |
QPE | quantitative precipitation estimation |
RG | rain gauge |
RMSE | root mean squared error |
SCaMPR | self-calibrating multivariate precipitation retrieval |
TB | brightness temperature |
WV | water vapor |
VIS | visible |
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Channel Number | Central Wavelength/μm | Spatial Resolution/km | Temporal Resolution/min | Channel Name |
---|---|---|---|---|
C009 | 6.25 | 4.0 | 5~15 | WV |
C010 | 7.1 | 4.0 | 5~15 | WV |
C011 | 8.5 | 4.0 | 5~15 | LWIR |
C012 | 10.8 | 4.0 | 5~15 | LWIR |
C013 | 12.0 | 4.0 | 5~15 | LWIR |
C014 | 13.5 | 4.0 | 5~15 | LWIR |
Statistical Index | Unit | Formula | Best Value |
---|---|---|---|
Mean Error (ME) | mm | 0 | |
Mean Absolute Error (MAE) | mm | 0 | |
Mean Relative Error (MRE) | % | 0 | |
Mean Absolute Relative Error (MARE) | % | 0 | |
Root Mean Squared Error (RMSE) | mm | 0 | |
Correlation Coefficient (CC) | NA | 1 |
Water/Land Surface (K) | Low Level Clouds (K) | Middle Level Clouds (K) | Altostratus/ Nimbostratus Clouds (K) | Cirrostratus Clouds (K) | Cirrus Spissatus Clouds (K) | Convective Clouds (K) | |
---|---|---|---|---|---|---|---|
C009 | 241 | 238 | 237 | 235 | 231 | 225 | 215 |
C010 | 254 | 251 | 248 | 245 | 239 | 230 | 217 |
C011 | 288 | 280 | 270 | 260 | 250 | 236 | 219 |
C012 | 290 | 281 | 270 | 260 | 248 | 234 | 217 |
C013 | 288 | 278 | 268 | 258 | 246 | 232 | 216 |
C014 | 261 | 257 | 252 | 246 | 238 | 228 | 216 |
C009−C014 | −20 | −19 | −15 | −11 | −7 | −3 | −1 |
C009−C013 | −47 | −40 | −31 | −23 | −15 | −7 | −1 |
C009−C012 | −50 | −42 | −33 | −25 | −17 | −9 | −2 |
C009−C011 | −48 | −41 | −33 | −25 | −19 | −11 | −4 |
C009−C010 | −13 | −12 | −11 | −10 | −8 | −5 | −2 |
C010−C012 | −37 | −30 | −22 | −15 | −10 | −4 | 0 |
C011−C014 | 27 | 22 | 18 | 14 | 12 | 8 | 3 |
C012−C014 | 29 | 23 | 18 | 14 | 10 | 6 | 1 |
C013−C014 | 27 | 21 | 16 | 12 | 8 | 4 | 0 |
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Ren, J.; Xu, G.; Zhang, W.; Leng, L.; Xiao, Y.; Wan, R.; Wang, J. Evaluation and Improvement of FY-4A AGRI Quantitative Precipitation Estimation for Summer Precipitation over Complex Topography of Western China. Remote Sens. 2021, 13, 4366. https://doi.org/10.3390/rs13214366
Ren J, Xu G, Zhang W, Leng L, Xiao Y, Wan R, Wang J. Evaluation and Improvement of FY-4A AGRI Quantitative Precipitation Estimation for Summer Precipitation over Complex Topography of Western China. Remote Sensing. 2021; 13(21):4366. https://doi.org/10.3390/rs13214366
Chicago/Turabian StyleRen, Jing, Guirong Xu, Wengang Zhang, Liang Leng, Yanjiao Xiao, Rong Wan, and Junchao Wang. 2021. "Evaluation and Improvement of FY-4A AGRI Quantitative Precipitation Estimation for Summer Precipitation over Complex Topography of Western China" Remote Sensing 13, no. 21: 4366. https://doi.org/10.3390/rs13214366