DOI: 10.5194/tc-10-1859-2016
Scopus记录号: 2-s2.0-84984601435
论文题名: Multilevel spatiotemporal validation of snow/ice mass balance and runoff modeling in glacierized catchments
作者: Hanzer F ; , Helfricht K ; , Marke T ; , Strasser U
刊名: Cryosphere
ISSN: 19940416
出版年: 2016
卷: 10, 期: 4 起始页码: 1859
结束页码: 1881
语种: 英语
英文关键词: airborne sensing
; catchment
; glacier mass balance
; Landsat
; laser method
; model validation
; MODIS
; parameterization
; runoff
; satellite data
; snow accumulation
; snow cover
; spatial resolution
; spatiotemporal analysis
; Alps
; Austria
; Central Alps
; Otztal Alps
英文摘要: In this study, the fully distributed, physically based hydroclimatological model AMUNDSEN is set up for catchments in the highly glacierized Ötztal Alps (Austria, 558km2 in total). The model is applied for the period 1997-2013, using a spatial resolution of 50m and a temporal resolution of 1h. A novel parameterization for lateral snow redistribution based on topographic openness is presented to account for the highly heterogeneous snow accumulation patterns in the complex topography of the study region. Multilevel spatiotemporal validation is introduced as a systematic, independent, complete, and redundant validation procedure based on the observation scale of temporal and spatial support, spacing, and extent. This new approach is demonstrated using a comprehensive set of eight independent validation sources: (i) mean areal precipitation over the period 1997-2006 derived by conserving mass in the closure of the water balance, (ii) time series of snow depth recordings at the plot scale, (iii-iv) multitemporal snow extent maps derived from Landsat and MODIS satellite data products, (v) the snow accumulation distribution for the winter season 2010/2011 derived from airborne laser scanning data, (vi) specific surface mass balances for three glaciers in the study area, (vii) spatially distributed glacier surface elevation changes for the entire area over the period 1997-2006, and (viii) runoff recordings for several subcatchments. The results indicate a high overall model skill and especially demonstrate the benefit of the new validation approach. The method can serve as guideline for systematically validating the coupled components in integrated snow-hydrological and glacio-hydrological models. © 2016 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75092
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Alps, Centre for Climate Change Adaptation, Innsbruck, Austria; Institute of Geography, University of Innsbruck, Innsbruck, Austria; Institute for Interdisciplinary Mountain Research, Austrian Academy of Sciences, Innsbruck, Austria
Recommended Citation:
Hanzer F,, Helfricht K,, Marke T,et al. Multilevel spatiotemporal validation of snow/ice mass balance and runoff modeling in glacierized catchments[J]. Cryosphere,2016-01-01,10(4)