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冰川冻土 ›› 2015, Vol. 37 ›› Issue (3): 643-649.doi: 10.7522/j.issn.1000-0240.2015.0072

• 冰冻圈与全球变化 • 上一篇    下一篇

黄土高原半干旱地区大气可降水量研究

王研峰1,3, 尹宪志1,3, 黄武斌2, 黄山1,3, 王田田1,3, 王蓉1,3   

  1. 1. 甘肃省人工影响天气办公室, 甘肃 兰州 730020;
    2. 兰州中心气象台, 甘肃 兰州 730020;
    3. 中国气象局 兰州干旱气象研究所/甘肃省干旱气候变化与减灾重点实验室/中国气象局 干旱气候变化与减灾重点实验室, 甘肃 兰州 730020
  • 收稿日期:2014-08-01 修回日期:2014-12-30 出版日期:2015-06-25 发布日期:2015-09-29
  • 通讯作者: 尹宪志, E-mail: gsqxjywcyxz@163.com. E-mail:gsqxjywcyxz@163.com
  • 作者简介:王研峰(1986-), 男, 甘肃会宁人, 助理工程师, 2013年在兰州大学获硕士学位, 现主要从事人工影响天气研究. E-mail: wangyanfeng_1986@163.com
  • 基金资助:
    甘肃省气象局气象科研重点项目"甘肃地区层状云微物理特征研究"(2015-15);甘肃省人工影响天气创新基金项目(2015-07)资助

Study of the precipitable water over the semi-arid regions of the Loess Plateau

WANG Yanfeng1,3, YIN Xianzhi1,3, HUANG Wubin2, HUANG Shan1,3, WANG Tiantian1,3, WANG Rong1,3   

  1. 1. Gansu Weather Modification Office, Lanzhou 730020, China;
    2. Lanzhou Center Meteorological Observation, Lanzhou 730020, China;
    3. Institute of Arid Meteorology, China Meteorological Administration/Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province/Key Laboratory of Arid Climate Change and Disaster Reduction of China Meteorological Administration, Lanzhou 730020, China
  • Received:2014-08-01 Revised:2014-12-30 Online:2015-06-25 Published:2015-09-29

摘要: 利用AERONET观测网SACOL站点2006年7月-2012年7月Level 2.0可降水量资料及与其对应的地面观测资料, 研究了黄土高原半干旱地区大气可降水量及其与地面水汽压之间的关系. 结果表明: 可降水量与降水量二者变化趋势基本相同, 8月最大. 月降水转化率呈现出"两峰两谷"型变化, 5月和9月出现峰值, 7月和12月出现谷值; 四季降水转化率均小于13%, 冬季仅为3.21%, 具有一定的增水潜力. 黄土高原半干旱地区大气可降水量与地面水汽压之间存在二次多项关系W=0.0018e2+0.0933e+0.0354, 在没有直接途径测量大气可降水量值的情况下具有一定应用价值.

关键词: 黄土高原半干旱区, 可降水量, 降水转化率, 地面水汽压

Abstract: Based on the precipitable water data of Level 2.0 from AERONET SACOL Site and the ground-based data from July 2006 to July 2012, characteristics of precipitable water and its relation to the surface vapor pressure over the semi-arid regions of the Loess Plateau were studied. The results show that: 1) Annual variability of precipitable water and precipitation showed the same changing tendency, with a maximum in August. 2) The monthly variation of precipitable water conversion rates had two peaks in May and September and two valleys in July and December. Precipitable water conversion rates was less than 13% in the four seasons, especially in winter, only 3.21%, which indicates that the cloud resources have potential for artificial enhancing precipitation. 3) There was a quadratic regression relation (W=0.0018e2+0.0933e+0.0354) between the precipitable water amount (W) and the surface vapor pressure (e). It has the value of application without direct way to measure precipitable water amount.

Key words: semi-arid regions of the Loess Plateau, precipitable water amount, precipitable water conversion rates, surface vapor pressure

中图分类号: 

  • P481