Articles | Volume 21, issue 1
Hydrol. Earth Syst. Sci., 21, 1–22, 2017
https://doi.org/10.5194/hess-21-1-2017
Hydrol. Earth Syst. Sci., 21, 1–22, 2017
https://doi.org/10.5194/hess-21-1-2017

Review article 02 Jan 2017

Review article | 02 Jan 2017

Rain or snow: hydrologic processes, observations, prediction, and research needs

Adrian A. Harpold et al.

Data sets

NEXRAD Data NOAA https://www.ncdc.noaa.gov/nexradinv/

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Short summary
The phase of precipitation as rain or snow is fundamental to hydrological processes and water resources. Despite its importance, the methods used to predict precipitation phase are inconsistent and often overly simplified. We review these methods and underlying mechanisms that control phase. We present a vision to meet important research gaps needed to improve prediction, including new field-based and remote measurements, validating new and existing methods, and expanding regional prediction.