Weather extreme events over sudan recent khartoum flood as example
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بسم الله الرحمن الرحيم. Weather Extreme events Over Sudan Recent Khartoum flood as example. Dr. Ahmed Mohamed Abdel Karim Director of SMA [email protected] 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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Weather extreme events over sudan recent khartoum flood as example

بسم الله الرحمن الرحيم

Weather Extreme eventsOver SudanRecent Khartoum flood as example

Dr. Ahmed Mohamed Abdel Karim

Director of SMA

[email protected]


What is weather

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


What is climate

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


What is climate change and variability

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.

.


What is climate change and variability1

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.


Climate change example

Climate change Example


Rainfall characteristic

Rainfall Characteristic

  • Rainfall Intensity : amount per hours

  • Rainfall spatial distribution

  • Rainfall onset

  • Rainfall cessation


Sudan climate zones

Sudan Climate zones


Weather extreme events over sudan recent khartoum flood as example

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 .


Weather extreme events over sudan recent khartoum flood as example

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


Extreme rainfall events

Extreme Rainfall events


Weather extreme events over sudan recent khartoum flood as example

  • 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.


12 5 2014 10 8 2014

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


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