So, how much of the Earth's surface is covered by rain gauges?

Bulletin of the American Meteorological Society
Chris KiddDalia B Kirschbaum

Abstract

The measurement of global precipitation, both rainfall and snowfall, is critical to a wide range of users and applications. Rain gauges are indispensable in the measurement of precipitation, remaining the de facto standard for precipitation information across the Earth's surface for hydro-meteorological purposes. However, their distribution across the globe is limited: over land their distribution and density is variable, while over oceans very few gauges exist and where measurements are made, they may not adequately reflect the rainfall amounts of the broader area. Critically, the number of gauges available, or appropriate for a particular study, varies greatly across the Earth due to temporal sampling resolutions, periods of operation, data latency and data access. Numbers of gauges range from a few thousand available in near real time, to about a hundred thousand for all 'official' gauges, and to possibly hundreds of thousands if all possible gauges are included. Gauges routinely used in the generation of global precipitation products cover an equivalent area of between about 250 m2 and 3,000 m2. For comparison, the center circle of a soccer pitch or tennis court is about 260 m2. Although each gauge should represent more tha...Continue Reading

References

Feb 6, 2013·Proceedings of the National Academy of Sciences of the United States of America·Aart OvereemRemko Uijlenhoet

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Citations

Aug 1, 2017·Bulletin of the American Meteorological Society·Gail Skofronick-JacksonThomas Wilheit
Jun 21, 2019·Quarterly Journal of the Royal Meteorological Society·V LevizzaniN-Y Wang
Jan 11, 2020·Bulletin of the American Meteorological Society·Francisco J TapiadorFuqing Zhang
Jul 25, 2020·Scientific Data·Dirk Nikolaus KargerNiklaus E Zimmermann
Jul 14, 2020·Journal of Applied Meteorology and Climatology·Gail Skofronick-JacksonVincenzo Levizzani
Jan 15, 2021·Scientific Reports·Reginaldo Moura Brasil NetoManoranjan Mishra
Apr 17, 2021·Nature Communications·Robert EmbersonThomas Stanley
Jun 1, 2021·Journal of Hydrometeorology·Samantha H HartkeZhe Li
Jul 31, 2021·The Science of the Total Environment·Mou Leong TanJames M Haywood
Nov 28, 2021·Scientific Data·Dirk Nikolaus KargerWalter Jetz

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