The ORNL DAAC announces the release of three data sets from the Hydrology, Soils, and Topography category associated with the International Satellite Land-Surface Climatology Project (ISLSCP):
ISLSCP II Global Precipitation Climatology Project Version 1, Pentad Precipitation. Data set prepared P. Xie. This data set includes global precipitation rates for 5-day, or pentad, periods. The data are derived from measured rain gauge data and merged with satellite estimates of rainfall. This is a portion of the version 1 GPCP pentad data and covers the ISLSCP II period from 1986 to 1995.
ISLSCP II Global Precipitation Climatology Project Version 2, Monthly Precipitation. Data set prepared by G. Huffman, D. Bolvin, and R. Adler. This data set provides global, monthly precipitation rates and associated random errors (RMSE), and a monthly precipitation climatology derived as an average from all GPCP data from January 1979 to December 1999. The data are derived from measured gauge data and merged with satellite estimates of rainfall. This is a portion of the version 2 GPCP data and covers the ISLSCP II period from 1986 to 1995.
ISLSCP II GTS Gauge-Based Analyses of Daily Precipitation over Global Land Areas . Data set prepared by P. Xie and J.E. Janowiak. This data set provides long-term data of daily precipitation on half degree and one degree latitude/longitude grids over the global land area. Station observations from GTS (Global Telecommunications System) gauges were utilized and interpolated using the algorithm of Shepard (1968).
International Satellite Land-Surface Climatology Project (ISLSCP)
The ISLSCP Initiative II data collection is designed to support modeling studies of the global carbon, water and energy cycle. This data collection contains 50 global time series spanning the ten-year period 1986 to 1995 compiled under the guidance of Forrest Hall and colleagues at NASA's Goddard Space Flight Center. The data for Initiative II were acquired from a number of U.S. and international agencies, universities, and institutions, then co-registered to equal-angle grids of one degree, one-half and one-quarter degree resolution and reformatted into a common ASCII format.
The collection includes a variety of remotely sensed data sets ranging from visible to microwave wavelengths. The data sets also include improved topography, surface radiation, near-surface meteorology, precipitation, runoff, soils, and vegetation data sets that can be used in a variety of interdisciplinary research activities. Several data sets to support global carbon and biogeochemical studies are also provided.
The ORNL DAAC is a NASA-funded data center archiving and distributing terrestrial ecology and biogeochemical dynamics data.