TY - JOUR
T1 - Precipitation Spectra Analysis over China with High-Resolution Measurements from Optimally Merged Satellite/Gauge Observations - Part I
T2 - Spatial and Seasonal Analysis
AU - Chen, Sheng
AU - Tian, Yudong
AU - Behrangi, Ali
AU - Hu, Junjun
AU - Hong, Yang
AU - Zhang, Zengxin
AU - Stepanian, Phillip M.
AU - Hu, Baoqing
AU - Zhang, Xinhua
N1 - Funding Information:
This work was supported in part by the Hydrometeorology and Remote Sensing (HyDROS) Laboratory at The University of Oklahoma, in part by the National Natural Science Foundation of China (No. 41361022 and No. 41171020), Guangxi Science and Technology Development Project (No. 2014DD29090), the Open Fund from State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University (No. SKHL1310 and No. SKHL1501), the Open Research Fund Program of State Key Laboratory of Water Resources and Hydropower Engineering Science (No. 2011B079), Key laboratory of watershed Geographic Sciences, Chinese Academy of Sciences (No. WSGS2015005).
Publisher Copyright:
© 2016 IEEE.
PY - 2016/7
Y1 - 2016/7
N2 - Precipitation amount (PA), frequency (PF), and intensity (PI) over China are characterized and quantified using a high-resolution merged satellite-gauge precipitation product for 6 years (January 2008 through December 2013). The precipitation product synthesizes both state-of-the-art multisatellite precipitation algorithms and the latest, densest gauge observations to provide high-quality precipitation information at a very fine temporal and spatial resolution (0.1°/hourly) that encompasses all of China. The geographical and seasonal variations in precipitation are systematically documented over seven subregions, each corresponding to a unique climate regime. PA, PF, and PI have large seasonal and geographical variations across China. It is found that 1) although heavy precipitation events (>10 mm/h) represent only 0.8% of total precipitation occurrence over China, they contribute 12.1% of the total precipitation volume. Light precipitation events (<1 mm/h) dominate the precipitation occurrence (74.3%) and contribute 23.1% of the total precipitation volume; 2) over the high-altitude Tibetan Plateau (TP), the landlocked Xinjiang (XJ) province, and northwestern China (NW), light precipitation events (<1 mm/h) occur very frequently (74.7%, 82.1%, and 64.1% of all precipitation events) and contribute 29.8%, 35.5%, and 27.4% of the total precipitation volume. This initial continental-scale study provides new insights on precipitation characteristics that can benefit meteorological and hydrological modeling and applications, especially in areas with sparse rain-gauge coverage.
AB - Precipitation amount (PA), frequency (PF), and intensity (PI) over China are characterized and quantified using a high-resolution merged satellite-gauge precipitation product for 6 years (January 2008 through December 2013). The precipitation product synthesizes both state-of-the-art multisatellite precipitation algorithms and the latest, densest gauge observations to provide high-quality precipitation information at a very fine temporal and spatial resolution (0.1°/hourly) that encompasses all of China. The geographical and seasonal variations in precipitation are systematically documented over seven subregions, each corresponding to a unique climate regime. PA, PF, and PI have large seasonal and geographical variations across China. It is found that 1) although heavy precipitation events (>10 mm/h) represent only 0.8% of total precipitation occurrence over China, they contribute 12.1% of the total precipitation volume. Light precipitation events (<1 mm/h) dominate the precipitation occurrence (74.3%) and contribute 23.1% of the total precipitation volume; 2) over the high-altitude Tibetan Plateau (TP), the landlocked Xinjiang (XJ) province, and northwestern China (NW), light precipitation events (<1 mm/h) occur very frequently (74.7%, 82.1%, and 64.1% of all precipitation events) and contribute 29.8%, 35.5%, and 27.4% of the total precipitation volume. This initial continental-scale study provides new insights on precipitation characteristics that can benefit meteorological and hydrological modeling and applications, especially in areas with sparse rain-gauge coverage.
KW - Atmospheric measurements
KW - rain
KW - satellite applications
KW - snow
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U2 - 10.1109/JSTARS.2016.2529003
DO - 10.1109/JSTARS.2016.2529003
M3 - Article
AN - SCOPUS:84960968922
SN - 1939-1404
VL - 9
SP - 2966
EP - 2978
JO - IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
JF - IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
IS - 7
M1 - 7433962
ER -