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An upgraded scheme of surface physics for Antarctic ice sheet and its implementation in the WRF model
- Source :
- Science Bulletin. 61:576-584
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- Regional climate models often lack detailed description of ice sheet surface and, as a result, are limited in their capability to provide useful information for Antarctic climate research and field campaigns. In this study, an upgraded scheme of surface physics for Antarctic ice sheet (IST) is developed to improve the surface temperature simulations in Antarctica. Through stand-alone simulations, IST shows advantages over the Noah glacial module, a commonly utilized scheme in the widely used Weather Research and Forecasting (WRF) model. These improvements are mainly attributed to the incorporation of detailed snow physics and optimized surface layer parameterization, which results in better simulations of both the surface albedo in summer and the turbulent sensible heat flux in winter. When coupled with IST instead of Noah, WRF models show improved simulation of surface temperatures throughout the year. The bias and root-mean-square-error of annual mean surface temperatures are reduced from 5.7 and 6.0 to 0.2 and 2.7 K.
- Subjects :
- geography
Multidisciplinary
geography.geographical_feature_category
010504 meteorology & atmospheric sciences
Meteorology
Antarctic ice sheet
Albedo
Sensible heat
010502 geochemistry & geophysics
Snow
01 natural sciences
Climatology
Weather Research and Forecasting Model
Climate model
Surface layer
Ice sheet
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 20959273
- Volume :
- 61
- Database :
- OpenAIRE
- Journal :
- Science Bulletin
- Accession number :
- edsair.doi...........1250e3a18f991b85d481224cb78b412c