SATELLITEBASED GLOBAL HIGHRESOLUTION PRECIPITATION PRODUCT

1
University of California, Irvine PI S. Sorooshian
SATELLITE-BASED GLOBAL HIGH-RESOLUTION
PRECIPITATION PRODUCT (PERSIANN
Precipitation estimation from Remote Sensing
Information using Artificial Neural Network)
2
University of California, Irvine PI S. Sorooshian
Local Standardized Precipitation Index (SPI) for
Hydro-climate Applications SPI is an index used
by National Drought Mitigation Center (NDMC) for
climate monitoring, in particular, operational
drought detection and triggers of the policy
responses (Hayes et al. 1999). Currently, NDMC
produces gauge-based monthly SPI for each U.S.
climate division. The demo shows the PERSIANN
data are expanded to produce local SPI based on
the climate divisions long-term precipitation
data.
SPI calculation requires long-term (gt 30 yrs)
precipitation data to derive Precipitation
Probability Density Function (PDF) for an area.
Based on the PDF, the dry-wet climate index-SPI
is calculated from the past months
precipitation.
3
University of California, Irvine PI S. Sorooshian
SPI Data for Local Water Resource Managements
(2005 six-month SPI)
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University of California, Irvine PI S. Sorooshian