نتایج جستجو برای: rain gauge

تعداد نتایج: 68523  

Journal: :Journal of Korea Water Resources Association 2007

2016
Wei Wang Hui Lu Dawen Yang Khem Sothea Yang Jiao Bin Gao Xueting Peng Zhiguo Pang

The Mekong River is the most important river in Southeast Asia. It has increasingly suffered from water-related problems due to economic development, population growth and climate change in the surrounding areas. In this study, we built a distributed Geomorphology-Based Hydrological Model (GBHM) of the Mekong River using remote sensing data and other publicly available data. Two numerical exper...

2016
Shiguang Xu Yan Shen Zhe Du

Integrated Multi-satellite Retrievals for Global Precipitation Measurement (IMERG) is an important satellite precipitation product of Global Precipitation Measurement (GPM) mission. Quantitative information about the errors of IMERG has great significance for the data developers and end users. In order to investigate the characteristics and the source of the errors contained in IMERG, a bias-de...

2011
P. K. Karmakar

Brightness temperatures at 22.234, 23.834 and 30 GHz and corresponding rain rates were measured using a ground based radiometer and a fast response optical rain gauge co-located with the radiometer during the year 2009 at Cauchuria, Paulista (22.57 0 S, 89 0 W), Brazil. A statistical analysis reveals that the number of occurrences goes beyond 200 times for rain rate up to 15 mm/hr. It was obser...

Journal: :Geophysical Research Letters 2021

Constructing an accurate, continental, in-situ-based, kilometer-scale, long-term record of the precipitation field and its spatiotemporal changes remains a significant challenge. Here, we determine extreme-value behavior NEXRAD Stage IV radar-based quantitative estimate. We find that climatology 5-year daily return values in contiguous United States East Rocky Mountains shows only slight variab...

Journal: :آب و خاک 0
طوفانی نژاد طوفانی نژاد کمالی کمالی علیزاده علیزاده

abstract obtaining reliable precipitation observations is important for hydrological simulations and weather forecasting. radar data can provide insight in the spatial variation of precipitation and can also detect large areas of rain and estimate rainfall rates. weather radar systems nearly always operate in s-, c- or x-band. since x-band systems require smaller antennas than those at c- or s-...

2004
STEPHEN W. NESBITT EDWARD J. ZIPSER CHRISTIAN D. KUMMEROW

An evaluation of the version-5 precipitation radar (PR; algorithm 2A25) and Tropical Rainfall Measuring Mission (TRMM) Microwave Imager (TMI; algorithm 2A12) rainfall products is performed across the Tropics in two ways: 1) by comparing long-term TRMM rainfall products with Global Precipitation Climatology Centre (GPCC) global rain gauge analyses and 2) by comparing the rainfall estimates from ...

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