WEATHER WATCH


GRACE-Based Root Zone Soil Moisture Drought Indicator October 10, 2022


Wetness percentiles are relative to the period 1948-2012 The root zone is defined as the top 1 meter of soil Cell Resolution 0.25 degrees


Projection of this document is Times (World) https://nasagrace.unl.edu


Scientists at NASA’s Goddard Space Flight Center generate groundwater and soil moisture drought indicators each week. Tey are based on terrestrial water storage observations derived from GRACE-FO satellite data and integrated with other observations, using a sophisticated numerical model of land surface water and energy processes. Te drought indicators describe current wet or dry conditions, expressed as a percentile showing the probability of occurrence for that particular location and time of year, with lower values (warm colors) meaning dryer than normal, and higher values (blues) meaning wetter than normal. Tese are provided as both images (such as the map above) and binary data files.


Maps of this data are available at https://nasagrace.unl.edu showing Global area, the Contiguous U.S. (CONUS), Africa, Asia, Australia, Europe, North America, and South America. As well as the Global Root Zone Soil Moisture Percentile map shown above, maps are available showing the Global Surface Soils Moisture Percentile, and the Global Groundwater Percentile.


132 TPI Turf News November/December 2022


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