DOI: 10.1016/j.jag.2017.06.005
Scopus记录号: 2-s2.0-85032189291
论文题名: Ground and satellite based assessment of meteorological droughts: The Coello river basin case study
作者: Cruz-Roa A ; F ; , Olaya-Marín E ; J ; , Barrios M ; I
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2017
卷: 62 起始页码: 114
结束页码: 121
语种: 英语
英文关键词: Cokriging
; Meteorological drought
; Standardized precipitation index
; TRMM Multisatellite Precipitation Analysis
Scopus关键词: assessment method
; drought
; ground-based measurement
; kriging
; precipitation (climatology)
; rainfall
; river basin
; satellite data
; spatial distribution
; TRMM
; Colombia
英文摘要: The spatial distribution of droughts is a key factor for designing water management policies at basin scale in arid and semi-arid regions. Ground hydro-meteorological data in neo-tropical areas are scarce; therefore, the merging of ground and satellite datasets is a promissory approach for improving our understanding of water distribution. This paper compares three monthly rainfall interpolation methods for drought evaluation. The ordinary kriging technique based on ground data, and cokriging with elevation as auxiliary variable were compared against cokriging using the Tropical Rainfall Measuring Mission (TRMM) Multi-Satellite Precipitation Analysis (TMPA). Twenty rain gauge stations and the 3B42V7 version of the TMPA research dataset were considered. Comparisons were made over the Coello river basin (Colombia) at 3″ spatial resolution covering a period of eight years (1998–2005). The best spatial rainfall estimation was found for cokriging using ground data and elevation. The spatial support of TMPA dataset is very coarse for a merged interpolation with ground data, this spatial scales discrepancy highlight the need to consider scaling rules in the interpolation process. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79965
Appears in Collections: 气候变化事实与影响
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作者单位: Faculty of Forest Engineering, Universidad del Tolima, Barrio Santa Helena, Ibagué, Colombia; Grupo de Investigación en Sistemas y Recursos Ambientales Sostenibles, Vicerrectoría de Investigaciones, Universidad Manuela Beltrán, Av. Circunvalar 60-00, Bogotá, Colombia
Recommended Citation:
Cruz-Roa A,F,, Olaya-Marín E,et al. Ground and satellite based assessment of meteorological droughts: The Coello river basin case study[J]. International Journal of Applied Earth Observation and Geoinformation,2017-01-01,62