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Updated: Jul 10, 2026

Soil Lysimeter Excavation for Coupled Hydrological, Geochemical, and Microbiological Investigations
Published on: September 11, 2016
Regions of strong coupling between soil moisture and precipitation
Randal D Koster1, Paul A Dirmeyer, Zhichang Guo
1NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA. randal.d.koster@nasa.gov
Abstract:
Previous estimates of land-atmosphere interaction (the impact of soil moisture on precipitation) have been limited by a lack of observational data and by the model dependence of computational estimates. To counter the second limitation, a dozen climate-modeling groups have recently performed the same highly controlled numerical experiment as part of a coordinated comparison project. This allows a multimodel estimation of the regions on Earth where precipitation is affected by soil moisture anomalies during Northern Hemisphere summer. Potential benefits of this estimation may include improved seasonal rainfall forecasts.
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