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| An Investigation into the Relationship between Surface Rain Rate and Rain Depth over Southeast Asia | |
| 作者姓名： | HU Liang LI Yaodong DENG Difei |
| 作者单位： | National Satellite Meteorological Center,China Meteorological Administration;Institute of Atmospheric Physics,Chinese Academy of Sciences;Beijing Aviation Meteorological Institute |
| 基金项目： | funded by four special grants from the National Natural Science Foundation of China (Grand Nos.41175046,41205030,40428002 and 41105028);the Special Funds for Scientific Research on Public Causes of China (Meteorology) (Grand No. GYHY200906002) |
| 摘 要： | The relationship between surface rain rate and depth of rain system(rain depth) over Southeast Asia is examined using 10-yr Tropical Rainfall Measuring Mission(TRMM) precipitation radar(PR) measurements.Results show that,in general,a large surface rain rate is associated with a deep precipitating system,but a deep rain system may not always correspond with a large surface rain rate.This feature has a regional characteristic.Convective rain develops more frequently over land than over the ocean,while stratiform rain can extend to higher altitudes over the ocean than over land.A light surface rain rate has the largest probability to occur,regardless of rain depth.A convective rain system is more likely associated with a stronger surface rain rate than a stratiform rain system.Results show that precipitation systems involve complex microphysical processes.Rain depth is just one characteristic of precipitation.A linear relationship between surface rain rate and rain depth does not exist.Both deep convective and stratiform rain systems have reflectivity profiles that can be divided into three sections.The main difference in their profiles is at higher levels,from 4.5 km up to 19 km.For shallow stratiform rain systems,a two-section reflectivity profile mainly exists,while for convective systems a three-section profile is more common. |
| 关 键 词： | TRMM rain depth convective rain stratiform rain |
| 修稿时间： | 7/3/2012 12:00:00 AM |
An Investigation into the Relationship between Surface Rain Rate and Rain Depth over Southeast Asia |
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| HU Liang,LI Yaodong,DENG Difei.An Investigation into the Relationship between Surface Rain Rate and Rain Depth over Southeast Asia[J].Advances in Atmospheric Sciences,2013,30(1):142-152. | |
| Authors: | , HU Liang , LI Yaodong , DENG Difei |
| Affiliation: | 1. National Satellite Meteorological Center, China Meteorological Administration, Beijing 100081;Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 2. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 ;Beijing Aviation Meteorological Institute, Beijing 100085 3. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 |
| Abstract: | The relationship between surface rain rate and depth of rain system (rain depth) over Southeast Asia is examined using 10-yr Tropical Rainfall Measuring Mission (TRMM) precipitation radar (PR) measurements. Results show that, in general, a large surface rain rate is associated with a deep precipitating system, but a deep rain system may not always correspond with a large surface rain rate. This feature has a regional characteristic. Convective rain develops more frequently over land than over the ocean, while stratiform rain can extend to higher altitudes over the ocean than over land. A light surface rain rate has the largest probability to occur, regardless of rain depth. A convective rain system is more likely associated with a stronger surface rain rate than a stratiform rain system. Results show that precipitation systems involve complex microphysical processes. Rain depth is just one characteristic of precipitation. A linear relationship between surface rain rate and rain depth does not exist. Both deep convective and stratiform rain systems have reflectivity profiles that can be divided into three sections. The main difference in their profiles is at higher levels, from 4.5 km up to 19 km. For shallow stratiform rain systems, a two-section reflectivity profile mainly exists, while for convective systems a three-section profile is more common. |
| Keywords: | TRMM rain depth convective rain stratiform rain |
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