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- Wang, L. (author)
Improving snow process modeling with satellite-based estimation of near-surface-air-temperature lapse rate
- Article/chapterEnglish2016
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- 2016
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- LIBRIS-ID:oai:gup.ub.gu.se/248193
- https://gup.ub.gu.se/publication/248193URI
- https://doi.org/10.1002/2016JD025506DOI
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- Language:English
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- In distributed hydrological modeling, surface air temperature (Tair) is of great importance in simulating cold region processes, while the near-surface-air-temperature lapse rate (NLR) is crucial to prepare Tair (when interpolating Tair from site observations to model grids). In this study, a distributed biosphere hydrological model with improved snow physics (WEB-DHM-S) was rigorously evaluated in a typical cold, large river basin (e.g., the upper Yellow River basin), given a mean monthly NLRs. Based on the validated model, we have examined the influence of the NLR on the simulated snow processes and streamflows. We found that the NLR has a large effect on the simulated streamflows, with a maximum difference of greater than 24% among the various scenarios for NLRs considered. To supplement the insufficient number of monitoring sites for near-surface-air-temperature at developing/undeveloped mountain regions, the nighttime Moderate Resolution Imaging Spectroradiometer land surface temperature is used as an alternative to derive the approximate NLR at a finer spatial scale (e.g., at different elevation bands, different land covers, different aspects, and different snow conditions). Using satellite-based estimation of NLR, the modeling of snow processes has been greatly refined. Results show that both the determination of rainfall/snowfall and the snowpack process were significantly improved, contributing to a reduced summer evapotranspiration and thus an improved streamflow simulation. ©2016. American Geophysical Union. All Rights Reserved.
Subject headings and genre
- NATURVETENSKAP Geovetenskap och miljövetenskap Geofysik hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences Geophysics hsv//eng
- distributed hydrological model
- lapse rate
- MODIS land surface temperature
- snow process
- water and energy cycle
Added entries (persons, corporate bodies, meetings, titles ...)
- Sun, L. (author)
- Shrestha, M. (author)
- Li, X. (author)
- Liu, W. (author)
- Zhou, J. (author)
- Yang, K. (author)
- Lu, H. (author)
- Chen, Deliang,1961Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences(Swepub:gu)xchede (author)
- Göteborgs universitetInstitutionen för geovetenskaper (creator_code:org_t)
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- In:Journal of Geophysical Research - Atmospheres121:200148-02272156-2202
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