...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Arctic, antarctic, and alpine research >Analysis of land-atmosphere interactions over the north region of Mt. Qomolangma (Mt. Everest)
【24h】

Analysis of land-atmosphere interactions over the north region of Mt. Qomolangma (Mt. Everest)

机译：泰山北部地区的地-气相互作用分析。珠穆朗玛峰（珠穆朗玛峰）

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

To better understand the basic characteristics of the land surface energy budget, nearly 7 years of continuous measurements at the Qomolangma Station for Atmospheric and Environmental Observation and Research, Chinese Academy of Sciences (QOMS/CAS) (28.21°N, 86.56°E, 4276 m a.s.l.) have been analyzed systematically. Seasonal and annual variations of micrometeorological measurements and land surface energy balance were analyzed. The general nature of the diurnal variation of the surface winds on the north of Mt. Everest is represented by a maximum in the afternoon and a constant wind speed in the early morning, which is controlled not only by the significant glacier wind but also by the local mountain-valley circulation and upper-level wind. Surface albedo decreases with increasing soil moisture content, showing the typical exponential relation between surface albedo and soil moisture. The data set disclosed that the high soil moisture in summer is coordinated with low albedo. The ratio between sensible heat and net radiation (H/Rn) can be as high as 0.49 when the soil is dry. The ratio (H/Rn) decreases to 0.14 with the increasing of soil moisture. On the contrary, the ratio between latent heat flux and net radiation (LE/Rn) is increased when soil moisture is rising. The highest ratio (LE/Rn) can be as high as 0.5 when soil moisture changes between 15% and 20%. After defining the effects of different soil moisture level on partitioning of surface available energy into sensible and latent heat fluxes, we can qualify how much the sensible heating is decreasing and the latent heating is increasing in this region under current plateau environment changes of warming and moistening.
机译：为了更好地了解陆地表面能量收支的基本特征，在中国科学院珠穆朗玛峰大气与环境观测与研究站（QOMS / CAS）进行了近7年的连续测量（28.21°N，86.56°E，4276 m asl）进行了系统分析。分析了微气象测量值和土地表面能量平衡的季节性和年度变化。山北部地面风日变化的一般性质。珠穆朗玛峰以下午的最高峰和清晨的恒定风速来表示，这不仅受显着的冰川风的影响，而且还受当地的山谷环流和高层风的控制。地表反照率随土壤含水量的增加而降低，表现出地表反照率与土壤水分之间的典型指数关系。数据集显示，夏季土壤湿度高，反照率低。当土壤干燥时，显热与净辐射之比（H / Rn）可高达0.49。随着土壤水分的增加，H / Rn值降低到0.14。相反，当土壤湿度增加时，潜热通量与净辐射之比（LE / Rn）增加。当土壤水分在15％和20％之间变化时，最高比率（LE / Rn）可能高达0.5。在定义了不同土壤水分水平对表面可用能量分配给显热通量和潜热通量的影响后，我们可以确定在当前高原环境变暖和变湿的情况下，该区域显热的减少量和潜热的增加量。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号