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Leeds Omani Society

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Map of the Hajar Mountains, sodar locations, radar, and met. observing stations. ... http://uk.weather.com/weather/local/UKXX0078. ???? ????? ??????? ?????? (????) ... – PowerPoint PPT presentation

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Title: Leeds Omani Society


1
??? ??? ????? ??????
  • Leeds Omani Society
  • 06 May 2006
  • Juma Al-Maskari
  • juma_at_env.leeds.ac.uk

2
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??????????????)) ?????43???? ??????? ????
???? ????? ???????? ???? ????? ????? ???? ?????
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?????? ?????? ??? ???????? ??? 45??? ??? ? ????
??? ??????? ????? ??????? ??????? ??? ???????? ?
???? ??? ???????? ?? ????? ??????? ???? ??????
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????? ?? ???? ??? ???? ??????? ???????? ????
?????? ????? ????? ???? ???????? ?? ???? ??????
??? ???? (?????? ??????) ? ??? ?? ????? ?????
??????. ??? ????? ??? ???? ???? ? ??? ?? ????
???? ????????? ??????? ?? ??????? http//alhawza.
net/forum
3
Stages of a thunderstorm
Developing
Mature
Disipating
4
?? ???????
  • ??? ?????
  • ?? ??? ?????? ??? ?? ????? ????? ???
  • ????? ??? ?????? ??? ?????? ?????? ??? ?????
  • ???
  • ???? ??? ???? ?? ?? ?????? ????? ?????
    ?????
  • ????? ??? ?? ???? ?????? ???? ?????? ??? ?????
    ??? ??????

5
Global observation network
Surface
  • ??? ??????? ?? ???? ????? ?????? ????? ??????
    ????? ?? ????? ?????.
  • ????? ????? ???? ?????? ??? ????? ?? ???????
    ???????
  • ??????? ??????? ??? ??????
  • ???? ???? ????? ???? ??
  • ????? ????????? ???????? ??????????

Upper Air
6
AIST Super Cluster
  • P-32 Cluster
  • Number of nodes 1074 (Two CPUs for each
    node)Peak performance 8.59TFLOPSMain memory
    6GB/node (Total Main memory 6444GB)

Laptop memory 500 MB 1 GB
7
Global grid (100 km resolution)
8
A zoom into the area
9
Oman
  • Resolution 28 km upper image
  • Resolution 7 km lower image
  • Simplified equations.
  • Good but not the best.

10
????? ???? ???????? ?? ?????? ???
11
??????? ??? ?? ?????? (???? ?? ??????) !!!! ???
???? ???? ?????? ?? ???? ..... ???? ???? ??????
??????? ?????? ?????? ????? ?????? ?? ?????? ???
. ??????? ??? ???? ??? ?? ??????? ????????
?????? ???? ????? ??????? ?????? ??????? ?????
????? ????? ????? ????? ???????? ?????????
??????? ??????? ??????? ??????? ???????? ??
????? ?????? ??????? ??????? ??????? ???????
?????? ???????? ????? ????? ??????? ???????? ??
??????? ?????? ???????? ????????
12
Why ?
?Why ?
  • Summer orographic convection over the Hajar
  • Mountains causes flash floods, strong downdrafts,
  • and sometimes hail.
  • There is a need to understand the causes and
  • therefore improve the ability to forecast.

13
Observational Experiment
14
Total Precipitation as forecasted by the Met
Office model for the 12 July 04 00UTC ? 15h
(1900 hours local time)
15
Accumulated precipitation (mm), red dots
represent positions of rain-gauges with
precipitations
Total domain rainfall 6.7013 e3
16
??????? ?????? ?? ????www.met.gov.om
  • ????? ???????? ?????? 100 ????
  • 5 ????? (???????? - ?????? - ?????? - ????????
    ?????? - ????? ?????)
  • 19 ?????? ??? - 52 ???? ??? - 4 ??????? - 7 ?????
    - 7 ???????
  • ? ???? ?????? ????? ???????.
  • ??????? (????? ???? ??????? ???????? ??????
    ???????
  • ???????? ??????? ??????? ?????? ???????? ?????)
  • ??????? ???????? ???????? ??????? - ????? ????
    - ??????? ??????
  • ?????? ??????? ??? ????? ???????? (?????????
    ????????)
  • ??? ???? ?? ???? ?? ???? ?? ???????
    ?????????????????
  • ???? ?? (??????? ?????? ?????? ???????
    ????? ????? ????? ????).
  • ?? ?????? ???? ?? ??????? ???????
  • ??? - ???? ????? ???????? ?? ?????? ????
    ????? ??? ???? ??????? ??? ???? ??????.

17
Something to take away
  • ???? ???????? ?? ????????
  • http//uk.weather.com/weather/local/UKXX0078
  • ???? ????? ??????? ?????? (????)
  • http//www.met.gov.om
  • (?????? ????? ???? ??? ????? ???????? ?????
    ????? ????? )
  • ???? ??????? ?? ????? ????? ?? ???????
  • http//www.kanzalarb.com
  • ??????? ???????? ????? ????? ??????? ?????????
    ?????? ??????? ????? ????? ???? ??????? ??????.
  • ?? ?????? ?????? ????? ????? ??? ????? ???? 2006
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