Publication Type : Journal Article
Thematic Areas : Wireless Network and Application
Publisher : Geophysical Research Letters, Wiley Online Library.
Source : Geophysical Research Letters, Wiley Online Library, Volume 46, Issue 20, p.11358–11366 (2019)
Url : https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2019GL084221
Campus : Amritapuri
School : School of Engineering
Center : Amrita Center for Wireless Networks and Applications (AmritaWNA)
Department : Wireless Networks and Applications (AWNA)
Year : 2019
Abstract : Precipitation measurements at gauges are often considered as reference truth for evaluation of satellite precipitation products. However, gauges may contain large errors. A major source of gauge‐measurement error is snowfall undercatch in high latitudes. We show that the two popular correction factors (CFs) used in the Global Precipitation Climatology Centre monitoring and the Global Precipitation Climatology Project products are different by more than 50%. The CFs can be as large as 3; thus, the choice of CF introduces large uncertainties. Here, in light of observation of storage change from the Gravity Recovery and Climate Experiment (GRACE) and by using the mass conservation principle, we assess the two popular CFs over six Arctic basins. By investigating monthly time series and multiyear precipitation rates over the studied basins using GRACE‐based analysis, the CF based on Fuchs dynamic correction model used in Global Precipitation Climatology Centre monitoring is preferred.
Cite this Research Publication : A. Behrangi, Alka Singh, Song, Y., and Panahi, M., “Assessing gauge undercatch correction in Arctic basins in light of GRACE observations”, Geophysical Research Letters, vol. 46, no. 20, pp. 11358–11366, 2019.