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Weather Extreme events Over Sudan Recent Khartoum flood as example

بسم الله الرحمن الرحيم. Weather Extreme events Over Sudan Recent Khartoum flood as example. Dr. Ahmed Mohamed Abdel Karim Director of SMA ahmed@ersad.gov.sd. What is Weather?. i) ‘State of atmosphere at a particular time and space as defined by the various meteorological elements. (WMO)

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Weather Extreme events Over Sudan Recent Khartoum flood as example

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  1. بسم الله الرحمن الرحيم Weather Extreme eventsOver SudanRecent Khartoum flood as example Dr. Ahmed Mohamed Abdel Karim Director of SMA ahmed@ersad.gov.sd

  2. What is Weather? i) ‘State of atmosphere at a particular time and space as defined by the various meteorological elements. (WMO) • The aspects involved in weather include small areas and duration, expressed in numerical values, etc. • The different weather elements are • (1) solar radiation • (2) temperature( maximum , minimum) • (3)pressure • (4) wind direction and speed • (5)humidity • (6)rainfall • (7)evaporation

  3. What is climate? Climateis usually defined as the average weather, or more rigorously, as the statistical description in terms of the mean and variability of relevant quantities over a period of time ranging from months to thousands or millions of years. WMO period: 30 years

  4. What is climate change and variability? Climate changerefers to a change in the state of the climate that can be identified (e.g., by using statistical tests) by 1-changes in the mean or variability of its properties, 2-and that persists for an extended period, 3-typically decades or longer. .

  5. What is climate change and variability? Climate variabilityrefers to variations beyond individual weather events in the mean state and other statistics of the climate (such as standard deviations, the occurrence of extremes, etc.) on all spatial and temporal scales.

  6. Climate change Example

  7. Rainfall Characteristic • Rainfall Intensity : amount per hours • Rainfall spatial distribution • Rainfall onset • Rainfall cessation

  8. Sudan Climate zones

  9. مؤشرات التغيرات المناخية في السودان • بدراسه وتحليل معدلات الامطار والحراره في بعض مدن السودان إعتمادا علي البيانات المناخيه التي تعدها الهيئه العامه للإرصاد الجوي . • نلاحظ ان هناك تغيرات في الحراره تميل نحو الارتفاع خلال الخمسين سنه الاخيره كما ان هناك تذبذب في الامطار مع الاتجاه نحو التناقص في المستويات مقارنه معدلات النصف الاول من القرن الماضي .

  10. 200 mm HAL WHF 22.00 20.00 ARB PSD ABH DNG KRM TKR AQQ 18.00 ATB HDB SHN 16.00 ARM SHM KHA KSL HLG HAS SHW WMD 500 mm GDF DUM 14.00 BAR FSH SNR GEN OBD KST KHW UMB ABN NHD NYL RSH 12.00 DMZ RNK BNS KDG KUR 10.00 MLK NSR RAG 8.00 WAU PIB 6.00 MAR JUB YEI KAP TOR YAM NAG 4.00 22.00 24.00 26.00 28.00 30.00 32.00 34.00 36.00 38.00 المقارنة بين المعدل المناخي 1941-1970 و المعدل المناخي 1971-2000م

  11. Extreme Rainfall events

  12. The following slide shows that Extreme events with respect to the annual rainfall in the normal(1981 to 2010) (in %). • Notice that south-ward the percentage is decrease. Meaning the rainfall annual in larger than the extreme event of the rainfall happen in the rainy season.

  13. امطار ولاية الخرطوم من 12/5/2014 حتى 10/8/2014

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