کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4978270 | 1452262 | 2017 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Impact of surface-heterogeneity on atmosphere and land-surface interactions
ترجمه فارسی عنوان
تأثیر ناهمگونی سطح بر تعاملات فضایی و سطح زمین
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کلمات کلیدی
الگوی سطح زمین، ناهمگونی، شبیه سازی بزرگ، موجها، تجزیه و تحلیل چند مقیاس
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
نرم افزار
چکیده انگلیسی
Land-surface heterogeneity occurs on many scales, but its inclusion remains an unsolved problem in land-surface and atmospheric boundary-layer schemes for weather and climate models. We investigate the propagation of land-surface heterogeneity in a convective boundary layer using an atmosphere and land-surface coupled large-eddy model. Simulations are made for land surfaces of different heterogeneity scales and a uniform land surface. A multi-scale analysis is carried out and it is found that while domain-and-time averaged fluxes and state variables are not sensitive to land-surface heterogeneity, atmospheric patterns are. Close to the surface, atmospheric patterns are dominated by land-surface forced patterns; away from the surface, “eigen” patterns dominate and forced patterns reemerge for large averaging times. While small-scale land-surface features are more rapidly destroyed by turbulence, large-scale features can persist over hundreds of meters.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Modelling & Software - Volume 88, February 2017, Pages 35-47
Journal: Environmental Modelling & Software - Volume 88, February 2017, Pages 35-47
نویسندگان
Shaofeng Liu, Yaping Shao, Angela Kunoth, Clemens Simmer,