華北一次強(qiáng)降水過(guò)程的分階段對(duì)比分析

doi:10.3969/2012jms.0075

首頁(yè) > 過(guò)刊瀏覽>2013年第33卷第2期 >222-228. DOI:10.3969/2012jms.0075

華北一次強(qiáng)降水過(guò)程的分階段對(duì)比分析
DOI:
                        10.3969/2012jms.0075
                    
CSTR:
                        
                    
作者:
                        
                        
                    
作者單位:
作者簡(jiǎn)介:
通訊作者:
中圖分類(lèi)號(hào):
基金項(xiàng)目:國(guó)家科技支撐計(jì)劃項(xiàng)目(2008BAC37B01);中國(guó)氣象局西南區(qū)域氣象中心區(qū)域重大科研業(yè)務(wù)項(xiàng)目(2010-3);河北省氣象局科研項(xiàng)目(11ky41、13ky24、13ky04).

Comparative analysis of different stages of a heavy rainfall in north China

Author:

Affiliation:

Fund Project:

摘要

圖/表

訪(fǎng)問(wèn)統(tǒng)計(jì)

參考文獻(xiàn)

相似文獻(xiàn)

引證文獻(xiàn)

資源附件

文章評(píng)論

摘要:

利用GPS可降水量、多普勒天氣雷達(dá)和地面加密自動(dòng)站等高時(shí)空分辨率資料,對(duì)2011年6月23—24日發(fā)生在京津冀的強(qiáng)降水天氣過(guò)程的不同階段進(jìn)行了對(duì)比分析。結(jié)果表明:(1)第一階段降水為時(shí)間短、強(qiáng)度大的積狀云對(duì)流降水;GPS可降水量的峰值與強(qiáng)降水對(duì)應(yīng),在降水之前6 h左右會(huì)有GPS可降水量峰值出現(xiàn);在空間分布上,高值中心的演變表現(xiàn)為東移南壓趨勢(shì)。(2)第二階段降水表現(xiàn)為持續(xù)時(shí)間較長(zhǎng)的系統(tǒng)性降水;雷達(dá)回波以大面積層狀云降水回波為主;此階段的GPS可降水量長(zhǎng)時(shí)間維持在高值階段,空間分布上GPS可降水量等值線(xiàn)"南高北低"并逐漸南壓,西部GPS可降水量明顯偏高。(3)在液態(tài)水與氣態(tài)水對(duì)比上,雷達(dá)VIL隨時(shí)間的變化不連續(xù),而GPS可降水量表現(xiàn)為連續(xù)性演變,二者的峰值或高值對(duì)應(yīng)較好,二者均可反映降水出現(xiàn)時(shí)間和降水性質(zhì),其中雷達(dá)VIL大值與降水出現(xiàn)時(shí)段吻合得好,而GPS可降水量的大小和演變趨勢(shì)可以提前預(yù)示降水的出現(xiàn)時(shí)間和降水性質(zhì),對(duì)降水天氣預(yù)報(bào)有指示意義。

Abstract:

Based on precipitable water vapor received from ground-based GPS, Doppler radar, ground automatically stations observation, two stages of a heavy rainfall in Hebei province is comparatively studied. The results show that: (1) the first stage of convective precipitation is in the evening of 23 June, whose precipitation intensity is stronger but lasting time is shorter; the main affecting system is high-altitude cold vortex, the southeast quadrant of which is the corresponding precipitation area. The main radar echo classification is convective, moving from northwest to southeast, and the echo intensity is more than 50 dBz; the value of VIL and ET is higher than the indicators of convective weather in Hebei province; heavy rainfall is corresponding with the peak of GPS PWV, while the other peak is usually occurred 6 h before precipitation. It experienced a rapid rise before the rainfall, and a fall phases after the rainfall; it shows a clear clockwise rotation in the GPS spatial distribution, and the center of a large value is corresponding with the heavy precipitation area. (2) The second stage on 24 June is mostly stratiform precipitation, whose lasting time is longer; the major affecting system is low-altitude shear line and easterly winds. The stratiform rain echoes move along the steering flow of 700 hPa, and the height of east wind is from the ground to 2 km. In this stage, the value of GPS precipitable water maintained at high-value level, especially in the west of Hebei province; the contours of GPS precipitable water vapor move from north to south in the spatial distribution, which is related with easterly winds and the Taihang Mountain terrain. (3) In contrast to the liquid and gaseous water, the emergence of peak of VIL and GPS PWV is generally the same, both of which can reflect the time and nature of precipitation; the time of VIL and precipitation is just fit, and the evolution trend of GPS PWV can indicate the starting, continuing and ending time in the precipitation, which can provide a reference for forecasting.

參考文獻(xiàn)

相似文獻(xiàn)

引證文獻(xiàn)

引用本文

李國(guó)翠,李國(guó)平,楊榮珍,陳小雷.華北一次強(qiáng)降水過(guò)程的分階段對(duì)比分析.氣象科學(xué),2013,33(2):222-228 LI Guocui, LI Guoping, YANG Rongzhen, CHEN Xiaolei. Comparative analysis of different stages of a heavy rainfall in north China. Journal of the Meteorological Sciences,2013,33(2):222-228

復(fù)制

文章指標(biāo)

點(diǎn)擊次數(shù):
下載次數(shù):
HTML閱讀次數(shù):
引用次數(shù):

歷史

收稿日期:2011-09-06
最后修改日期:2011-10-15
錄用日期:
在線(xiàn)發(fā)布日期: 2013-04-25
出版日期:

文章二維碼

您是第位訪(fǎng)問(wèn)者
氣象科學(xué) ® 2026 版權(quán)所有
技術(shù)支持：北京勤云科技發(fā)展有限公司

抽查舔水白紧大视频,冲喜娘子超甜哒激情五月,亚洲黄色图片偷拍网站,亚洲三级黄片免费播放,91在线观看喷潮红桃,日韩精品在线观看一区二区,久久久久久久久久久久黄色片子,日产精品99久久久久久久久,欧洲亚洲另类图片小说

引用本文

分享

相關(guān)視頻

文章指標(biāo)

歷史

文章二維碼

抽查舔水白紧大视频,冲喜娘子超甜哒 激情五月,亚洲黄色图片偷拍网站,亚洲三级黄片免费播放,91在线观看喷潮红桃,日韩精品在线观看一区二区,久久久久久久久久久久黄色片子,日产精品99久久久久久久久,欧洲亚洲另类图片小说

引用本文

分享

相關(guān)視頻

文章指標(biāo)

歷史

文章二維碼

抽查舔水白紧大视频,冲喜娘子超甜哒激情五月,亚洲黄色图片偷拍网站,亚洲三级黄片免费播放,91在线观看喷潮红桃,日韩精品在线观看一区二区,久久久久久久久久久久黄色片子,日产精品99久久久久久久久,欧洲亚洲另类图片小说