Document Details
|
Document Type |
: |
Article In Journal |
|
Document Title |
: |
Simulation of autumn 1994 rainfall over Egypt using Regional Climate Model: (Part 1) Effect of Choice of Driving Forces محاكاة الامطار على مصر فى خريف 1994باستخدام نموذج اقليمى للمناخ. الجزء الاول:تاثير القوى المؤثرة |
|
Document Language |
: |
English |
|
Abstract |
: |
The ICTP latest version of the National Center for Atmospheric Research (NCAR) Regional Climate Model (RegCM3) has been employed to investigate the mechanism of the Flash Flood that hit Egypt on the late night of 31 of October to the 2nd of November 1994. The model employs LAMCON map projection, with a domain of 180 X 190 gridpoints centered at 25.39° E, 35.48° N, and a horizontal grid spacing of 25km. The simulation period is the 1st of Aug.1994 to the end of November 1994. Several simulations have been carried out using different driving fields, which is the data assimilation products of NWP centers using global models known as reanalysis (e.g. ERA-40, NCEP/NCAR) known as NNRP1, NNRP2 and ERA40 in order to address the sensitivity of the model to the driving fields comparing to the observations and to study the ability of the RegCM to simulate both the spatial patterns and magnitude of the rainfall over Egypt and the whole domain. The results showed that; in terms of the daily mean, the use of NNRP2 lateral boundary field showed consistently fields greater precipitation amounts compared to others but good in spatial structure over Egypt. While, in terms of the monthly mean, the use of NNRP1 and ERA40 lateral boundary fields consistently yields greater precipitation amounts compared to the use of NNRP2 field. In addition, it provides a good simulation of precipitation spatial structure but varies between over and under estimation for the rainfall amounts and over the region in comparison with the CRU and CMAP data. |
|
ISSN |
: |
1687-1014 |
|
Journal Name |
: |
Egyptian Meteorological Authority |
|
Volume |
: |
23 |
|
Issue Number |
: |
1 |
|
Publishing Year |
: |
1429 AH
2008 AD |
|
Article Type |
: |
Article |
|
Added Date |
: |
Wednesday, February 29, 2012 |
|
Researchers
| عبد اللطيف عيسوي عواد | Awwad, Abdellatif Esawy | Investigator | Doctorate | aeabdu@kau.edu.sa |
|
Back To Researches Page
|