Role of Black Carbon-Induced Changes in Snow Albedo in Predictions of Temperature and Precipitation during a Snowstorm
Role of Black Carbon-Induced Changes in Snow Albedo in Predictions of Temperature and Precipitation during a Snowstorm
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DOI：
10.1080/16742834.2009.11446801
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发表时间：
2009-01
影响因子：
2.3
通讯作者：
Z. Ying;Liao Hong;Zhu Ke-Feng;Yingchao Yan
中科院分区：
文献类型：
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作者：
Z. Ying;Liao Hong;Zhu Ke-Feng;Yingchao Yan
本文应用天气研究和预报模式的化学版本，（WRF-Chem）研究2008年1月26日8时至1月29日8时在中国南方发生的强雪暴期间，黑碳引起的雪中二氧化碳含量变化对模拟温度和降水的影响（请注意，所有时间均为当地时间，除非另有说明）。在WRF-Chem中对黑碳气溶胶进行了在线模拟，模拟结果表明，1月27-28日的平均表面碳浓度可以被黑碳的沉降降低10%。因此，相对于不考虑BC在雪/冰上的沉积的模拟，1月27-28日期间的预测的表面空气温度可以相差-1.95至2.70 K，并且在具有大BC沉积的区域A和B上，1月27-28日的预测的累积降水可以相差-2.91至3.10 mm。变化的不同迹象取决于云的反馈和大气中水蒸气的可用性。
Abstract In this study the authors apply the chemistry version of the Weather Research and Forecasting model (WRF-Chem) to examine the impacts of black carbon (BC)-induced changes in snow albedo on simulated temperature and precipitation during the severe snowstorm that occurred in southern China during 0800 26 January to 0800 29 January 2008 (Note that all times are local time except when otherwise stated). Black carbon aerosol was simulated online within the WRF-Chem. The model results showed that surface-albedo, averaged over 27–28 January, can be reduced by up to 10% by the deposition of BC. As a result, relative to a simulation that does not consider deposition of BC on snow/ice, the predicted surface air temperatures during 27–28 January can differ by -1.95 to 2.70 K, and the predicted accumulated precipitation over 27–28 January can differ by -2.91 to 3.10 mm over Areas A and B with large BC deposition. Different signs of changes are determined by the feedback of clouds and by the availability of water vapor in the atmosphere.