Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.4880 |
Daily climate data for the Amhara region in Northwestern Ethiopia | |
Sisay, Kibruyesfa1,2; Thurnher, Christopher1; Hasenauer, Hubert1 | |
2017-05-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
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ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2017 |
卷号 | 37期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Austria; Ethiopia |
英文摘要 | Many spatial vegetative physiological and environmental impact studies demand consistent as well as fine resolution daily meteorological data, which is often unavailable. This problem is evident when studies and applications focus at the regional and local scale. Meteorological stations cannot provide the needed data due to their irregular locations and several associated shortcomings such as missing data. Climate data from global sources like the National Centers for Environmental Prediction (NCEP) and WorldClim are provided at a coarse resolution which makes them inappropriate to use directly at regional and local scales. In order to circumvent this problem, we downscaled daily WorldClim and NCEP global climate grids to produce weather data sets using a delta method to 0.0083 (approximately 1 x 1 km) spatial resolution for the Amhara region of northwestern Ethiopia. The downscaled data set includes daily precipitation, and minimum and maximum temperature from 1979 to 2010. The drizzle effect in the downscaled data set was first eliminated by using a rain threshold that removed values of < 1mm per day. We compared the downscaled values with our calibration data from 56 meteorological stations in the Amhara region. The comparison between the downscaled and the calibrated data from weather stations showed biases in the downscaled values. A delta-change bias correction technique on a 10-day average basis was used to correct the biases associated with the downscaled data. Simple additive and multiplicative bias correction methods were used for temperature and precipitation, respectively. We then validated the corrected downscaled daily weather data using ten independent weather stations from the region. We found that the downscaling and the bias correction methods have improved the NCEP values. The validation exhibited no bias. The full data set can be accessed freely under the following link: ftp://palantir.boku.ac.at/Public/ClimateDataEthiopia/. |
英文关键词 | precipitation temperature downscaling Amhara WorldClim NCEP |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404849200001 |
WOS关键词 | NET PRIMARY PRODUCTION ; BIAS-CORRECTION ; CHANGE IMPACT ; RAINFALL ; PRECIPITATION ; TEMPERATURE ; SIMULATIONS ; SATELLITE ; SURFACES ; VARIABILITY |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/37396 |
专题 | 气候变化 |
作者单位 | 1.Univ Nat Resources & Life Sci, Inst Silviculture, Peter Jordan Str 82, A-1190 Vienna, Austria; 2.Gondar Agr Res Ctr, Amhara Reg Agr Res Inst, Gondar, Ethiopia |
推荐引用方式 GB/T 7714 | Sisay, Kibruyesfa,Thurnher, Christopher,Hasenauer, Hubert. Daily climate data for the Amhara region in Northwestern Ethiopia[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2017,37(6). |
APA | Sisay, Kibruyesfa,Thurnher, Christopher,&Hasenauer, Hubert.(2017).Daily climate data for the Amhara region in Northwestern Ethiopia.INTERNATIONAL JOURNAL OF CLIMATOLOGY,37(6). |
MLA | Sisay, Kibruyesfa,et al."Daily climate data for the Amhara region in Northwestern Ethiopia".INTERNATIONAL JOURNAL OF CLIMATOLOGY 37.6(2017). |
条目包含的文件 | 条目无相关文件。 |
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