Long-Term Variability of Atmospheric Precipitation

Dear Colleagues,

Precipitation is an indicator that reflects the energy and mass exchange in land–atmosphere interactions, playing an important role in terrestrial modeling and meteorological studies. Precipitation is generally condensed into one quantity and summed at daily, monthly or annual time scales, primarily because most precipitation data are recorded daily. Precipitation is particularly vulnerable to climate change and has significant effects on runoff, groundwater levels, water resources protection, crop growth, and human life; it has large intermittency and fluctuation, at nearly all temporal and spatial scales. The analysis of precipitation commonly depends on surface gauge observations, which are typically used to directly measure precipitation at the Earth’s surface. Alternatively, the reanalysis product aims to reproduce the precipitation state in a statistically optimal sense by combining model forecasts with various observation data after quality control. Precipitation extremes have been widely reported to increase with global warming; however, the variability and mechanism of precipitation characteristics such as extremes, unevenness and seasonality have not been well quantified. The long-term variability of precipitation has also not been fully addressed, and is extremely meaningful to climate studies, hydrological recycling, agricultural water usability and other related fields.

Dr. Guocan Wu
Dr. Yuna Mao
Guest Editors

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