Performance of TRMM satellite data over the rain-gauge observations in Bangladesh

被引:1
作者
Alamgir, S [1 ]
Bernier, M [1 ]
Racine, MJ [1 ]
机构
[1] Inst Natl Rech Sci, Ste Foy, PQ G1V 4C7, Canada
来源
REMOTE SENSING FOR AGRICULTURE, ECOSYSTEMS, AND HYDROLOGY VI | 2004年 / 5568卷
关键词
precipitation; TRMM satellite data; rain gauge; CFAD; statistical error analysis;
D O I
10.1117/12.565815
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
Many rainfall estimation techniques and algorithms are developed for a particular region and for very different time-space scales. Instantaneous rain rates may vary from fractions of mm to over 100mm per hr. and the rainfall intensity with duration varies from region to region. We need to understand the errors structure for a variety of instruments and algorithms that are in use today or will be in use tomorrow over different regions. Bangladesh is the country that suffers from flooding in most of the year because of highly intensive rainfall within and outside of the country. The performance of satellite rainfall is an important issue for hydro-meteorological application in Bangladesh. In this study, the first space-borne Precipitation Radar (PR) launched by Tropical Rainfall Measuring Mission (TRMM) satellite data is used. which produces rain/no rain flag, vertical rain rate profile, near surface rain etc. However, only those gauge stations are considered in this study that falls inside die instantaneous field of view of particular TRMM observations. The preliminary result shows that Bangladesh is distinct from the other region in USA. Passive Microwave calibrated IR (3B41RT) performs better than TMI-2A12 rain product over Bangladesh. The main reason could be summer rain in Bangladesh that comes mainly from extensive mid-level stratiform clouds. We could also observe from PR reflectivity profile using contoured frequency by altitude display (CFAD), higher detection error are those areas where stratiform rain is dominant, or constitute a significant proportion.
引用
收藏
页码:179 / 188
页数:10
相关论文
共 30 条
[1]  
BARRETT EC, 2001, IAHS PUBL, V267, P3
[2]   A study of the 1999 monsoon rainfall in a mountainous region in central Nepal using TRMM products and rain gauge observations. [J].
Barros, AP ;
Joshi, M ;
Putkonen, J ;
Burbank, DW .
GEOPHYSICAL RESEARCH LETTERS, 2000, 27 (22) :3683-3686
[3]  
CIACH JG, ADV WATER RESOURCES, V22, P585
[4]   A comparison of precipitation datasets for the Amazon basin [J].
Costa, MH ;
Foley, JA .
GEOPHYSICAL RESEARCH LETTERS, 1998, 25 (02) :155-158
[5]  
Grecu M, 2001, J APPL METEOROL, V40, P1367, DOI 10.1175/1520-0450(2001)040<1367:OPEFTP>2.0.CO
[6]  
2
[7]  
Huffman GJ, 2001, J HYDROMETEOROL, V2, P36, DOI 10.1175/1525-7541(2001)002<0036:GPAODD>2.0.CO
[8]  
2
[9]  
HUSAIN MA, 1996, MAUSAM, V47, P339
[10]  
*IFCDR, 1997, APPL REM SENS TECHN