The GPM GV Program

Petersen, Walter A ; Kirstetter, Pierre E ; Wang, Jianxin ; Wolff, David B ; Tokay, Ali

关键词: DATA PRODUCTS;    GPM SATELLITE CONSTELLATION;    JAPANESE SPACE PROGRAM;    NASA PROGRAMS;    PRECIPITATION MEASUREMENT;    SATELLITE INSTRUMENTS;    DATA RETRIEVAL;    GROUND TRUTH;    RAIN;    SNOW;   

RP-ID  :  MSFC-E-DAA-TN63395

学科分类：地球科学(综合)

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

We present a detailed overview of the structure and activities associated with the NASA-led ground validation component of the NASA-JAXA Global Precipitation Measurement (GPM) mission. The overarching philosophy and approaches for NASA’s GV program are presented with primary focus placed on aspects of direct validation and a summary of physical validation campaigns and results. We describe a spectrum of key instruments, methods, field campaigns and data products developed and used by NASA’s GV team to verify GPM level-2 precipitation products in rain and snow. We describe the tools and analysis framework used to confirm that NASA’s Level-1 science requirements for GPM are met by the GPM Core Observatory. Examples of routine validation activities related to verification of Integrated Multi-satellitE Retrievals for GPM (IMERG) products for two different regions of the globe (Korea and the U.S.) are provided, and a brief analysis related to IMERG performance in the extreme rainfall event associated with Hurricane Florence is discussed.