J4 ›› 2009, Vol. 27 ›› Issue (3): 250-253.

• 论文 • 上一篇    下一篇

西北地区一次沙尘暴过程的地表热通量特征

吕 萍1,2   

  1. 1.中国气象局兰州干旱气象研究所,甘肃 兰州 730020;2.兰州大学大气科学学院,甘肃 兰州 730000
  • 收稿日期:2009-05-06 修回日期:2009-06-03 出版日期:2010-09-30 发布日期:2009-09-30
  • 作者简介:吕萍,女,博士,副研究员,主要从事风沙物理研究.E-mail:lvping@lzb.ac.cn
  • 基金资助:

    干旱气象科学研究基金(IAM200813)项目及国家自然科学基金(40871003)共同资助

Basic Characteristics of SurfaceHeating Flux During a Spring Dust Storm Process in North-westChina

 LV  Ping1,2   

  1. (1. Institute ofAridMeteorology,CMA,Lanzhou730020, China;2.College ofAtmospheric Sciences, Lanzhou University, Lanzhou730000, China)
  • Received:2009-05-06 Revised:2009-06-03 Online:2010-09-30 Published:2009-09-30

摘要:

利用NCEP日平均全球再分析网格点资料,对我国西北地区晴天日与沙尘暴日地表感热通量及潜热通量的差异进行了对比分析。结果表明:沙尘暴爆发前和爆发时,地表感热通量迅速增大,潜热通量急剧减小,地面空气处于一种干热状态,为一热源区,有能量的散失。

关键词: 西北地区, 潜热通量, 感热通量

Abstract:

Based on the global daily reanalysis grid data ofNCEP, the comparative analysis ofdiscrepancywas done between the sunny day and sand-dustday aboutsensible heat flux and latentheat flux inNorth-westChina. The results show that the sensible heat flux increased rapidly, whereas the latentheat flux decreased quickly during the course ofduststorm. The airwas hotand dry, and the dust storm areawas a heat source area.
.

Key words: North-west area, sensible heat flux, latentheat flux

中图分类号: