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 US) are provided, and a brief analysis related to IMERG performance in the extreme rainfall event associated with Hurricane Florence is discussed.
CITATION STYLE
Petersen, W. A., Kirstetter, P. E., Wang, J., Wolff, D. B., & Tokay, A. (2020). The GPM ground validation program. In Advances in Global Change Research (Vol. 69, pp. 471–502). Springer. https://doi.org/10.1007/978-3-030-35798-6_2
Mendeley helps you to discover research relevant for your work.