Refinements to SSiB with an Emphasis on Snow Physics: Evaluation and Validation Using GSWP and Valdai Data
Refinements to SSiB with an Emphasis on Snow Physics: Evaluation and Validation Using GSWP and Valdai Data
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DOI：
10.1175/1087-3562(2001)005
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发表时间：
2001-11
影响因子：
2
通讯作者：
D. Mocko;Y. Sud
中科院分区：
文献类型：
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作者：
D. Mocko;Y. Sud
摘要对简化简单生物圈模型(SSIB)的雪物理方案的改进进行了描述和评价。升级包括对积雪的概念架构进行部分重新设计，以更好地模拟积雪表面的白天温度。对于深积雪，有两个独立的预报温度雪层：顶层对地面强迫的日波动做出响应，而深层表现出缓慢变化的响应。此外，使用非常深的土壤温度和雪老化的处理及其对雪密度的影响被参数化和评估。升级后的降雪计划在全球土壤湿润项目(GSWP)中产生了更好的积雪融化时间，使用俄罗斯小麦带地区1987-1988年国际卫星陆地表面气候项目(ISLSCP)倡议I的数据进行了模拟。为了在地形变异性较大的地区模拟更真实的径流，SSIB对土壤水文进行了额外的改进。..。
Abstract Refinements to the snow-physics scheme of the Simplified Simple Biosphere Model (SSiB) are described and evaluated. The upgrades include a partial redesign of the conceptual architecture of snowpack to better simulate the diurnal temperature of the snow surface. For a deep snowpack, there are two separate prognostic temperature snow layers: the top layer responds to diurnal fluctuations in the surface forcing, while the deep layer exhibits a slowly varying response. In addition, the use of a very deep soil temperature and a treatment of snow aging with its influence on snow density is parameterized and evaluated. The upgraded snow scheme produces better timing of snowmelt in Global Soil Wetness Project (GSWP)-style simulations using International Satellite Land Surface Climatology Project (ISLSCP) Initiative I data for 1987–88 in the Russian Wheat Belt region. To simulate more realistic runoff in regions with high orographic variability, additional improvements are made to SSiB's soil hydrology. ...