DOI: 10.1016/j.atmosres.2018.06.023
Scopus记录号: 2-s2.0-85049443096
论文题名: Validation of CHIRPS precipitation dataset along the Central Andes of Argentina
作者: Rivera J.A. ; Marianetti G. ; Hinrichs S.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 213 起始页码: 437
结束页码: 449
语种: 英语
英文关键词: Andes
; Argentina
; CHIRPS
; Precipitation
; Remote sensing
; Spatio-temporal validation
Scopus关键词: Chirp modulation
; Precipitation (chemical)
; Rain gages
; Remote sensing
; Systematic errors
; Andes
; Argentina
; CHIRPS
; Mediterranean climates
; Meteorological station
; Seasonal and interannual variability
; Seasonal precipitations
; Spatio temporal
; Rain
; data set
; error analysis
; estimation method
; precipitation assessment
; remote sensing
; spatiotemporal analysis
; weather station
; Andes
; Argentina
; Patagonia
英文摘要: A validation covering a 30-year period (1987–2016) of the relatively new CHIRPS precipitation dataset was performed over the Central Andes of Argentina (CAA), a semi-arid region with complex topography and sparse ground observations. Precipitation data from 57 rain gauges and several well-known continuous and categorical validation statistics were assessed to evaluate the performance of CHIRPS estimations. The study area was divided into two zones based on the timing of the rainy season maximum, in order to determine regional differences in the characterization of precipitation patterns. The results of this study indicate that CHIRPS data reproduce adequately several characteristics of precipitation along the study area, as the seasonal and interannual variability and the spatial patterns of precipitation. CHIRPS dataset is able to capture the rainy season characteristics over the CAA, considering the Mediterranean climate features over the Andes ranges and the monsoonal regime in the lowlands. CHIRPS achieves better results for the stations located in the region with summer precipitation maximum, mostly located over Cuyo region (correlation = 0.86, bias = 11%, mean absolute error = 15.3 mm). Despite the strong correlation of 0.82 over Northern Patagonia region, CHIRPS showed a significant overestimation of the seasonal precipitation totals during the cold semester (April to September, bias = 65.8%, mean absolute error = 34.7 mm). These systematic errors can be attributed to the poor performance of CHIRPS in reproducing the precipitation features over the zones above 1000 m.a.s.l. One of the reasons behind the observed differences can be attributed to the limited number of anchor stations used in the CHIRPS calculation procedure, which highlights this study as an independent validation given the amount of meteorological stations used. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108805
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (CCT-Mendoza/CONICET), Av. Ruiz Leal s/n, Parque General San Martín, Mendoza, 5500, Argentina; Facultad de Ciencias Veterinarias y Ambientales, Universidad Juan Agustín Maza. Av. Acceso Este, Lateral Sur 2245, Guaymallén, Mendoza, 5519, Argentina
Recommended Citation:
Rivera J.A.,Marianetti G.,Hinrichs S.. Validation of CHIRPS precipitation dataset along the Central Andes of Argentina[J]. Atmospheric Research,2018-01-01,213