Presentation on theme: "Relevant Climate studies of the Ghana Meteorological Agency (GMet)"— Presentation transcript:
1 Relevant Climate studies of the Ghana Meteorological Agency (GMet) ByAYILARI-NAA JUATIANDELIKEM SETSOAFIA19-23 November 2012DATA RESCUE WORKSHOPErata Hotel, Accra, Ghana
2 THE GHANA METEOROLOGICAL AGENCY PROVIDING WEATHER AND CLIMATE INFORMATION FOR RAPID SOCIO-ECONOMIC DEVELOPMENT
3 OUTLINE Network of Meteorological stations The Volta Basin (covering 6 W/African countries)Dams within the Volta BasinSome climate studies of GMet in the Sudan and Guinea Savannah of Ghana.Comparing results of these studies with Climate Indices for Wa in the Guinea SavannahChallenges and Recommendations
10 Average yearly Rainfall over Northern Ghana ( 1971 to 2007) Rainfall showing a decreasing trend over the yearsRainfall variability here can be as high as 400mm between seasons
11 High Incidences of drought to the Western parts of northern Ghana High Incidences of drought around Kete-Krachi( )High Incidences of drought around southern Central, Western and Volta Regions, like , Ada,Kpetoe, Tsito, Cape Coast etcHigh Incidences of drought around Nkwanta area.
12 Here high Incidences of drought covering most of the Western part of Ghana. ( )Areas around Kete-Krachi, Southern Volta, Central and WesternRegions as well as Eastern Coasts are much affected( )
13 Expected changes in temperature and rainfall for the Sudan and Guinea Savannah areas of Ghana_run by GMet ( Ghana National Communication _IPCC)Baseline period isData used ; Daily rainfall in millimetresRainfall amount of less than 0.2 millimetres not counted as a rainfall day.Daily temperature degrees CelsiusA1B Scenario (TAR and AR4) i.e: rapid econ. growth, quick spread of global technology, global pop of 9 billion in 2050 dwindling gradually thereafter, quick spread of new & efficient technology, a convergent world( income & way of life between regions)- SRESSRES= Special Report on Emission Scenarios
14 Sudan Savannah Temperature change/scenarios Mean Temp. increase ranging from 0.5 to 5.0 from 2020 to 2080
15 Guinea Savannah Temperature change/scenarios Temp change here between 0.6 and 4.5 from 2020 to 2080
16 Sudan Savannah Precipitation Rainfall expected to decrease by 10 to 17% by 2080 in June to October
17 Guinea Savannah Precipitation Rainfall to decrease even further by up to 25% from June to Sept in this Zone
23 Challenges: database issues Some amount of data digitizedA lot more needs to be digitizedPoor Meta databaseIncorporating data from Automatic Observations from about 18 recently( 2011) installed AWSsQC issues and missing dataIncorporating data ( 18th Century) recently recovered from the UK into database
24 MORE CHALLENGESPutting data in appropriate format for R to run a difficultyMissing values >20% in each year implies no Indices? A limitation.Deciding Outliers can be a real difficulty; in the face of MCS (Mesoscale Convective Systems)in West Africa.
25 RECOMMENDATIONSURGENT NEED FOR the development of Adequate HUMAN CAPITAL IN the Field OF CLIMATE CHANGE STUDIES / RESEARCH AND CLIMATE MODELLING (DOWNSCALING ) , extreme value analysis ,in GHANA. Building credible databases including meta data. critical need for the calculation and exchange of relevant climate indices in the west african sub- region. Wmo continues to serve as the platform for the development of user-friendly software for the extraction of relevant climate indices. gender mainstreaming in climate change issues.
26 THANK YOU AYILARI-NAA JUATI E:MAIL: A.JUATI@METEO.GOV.GH TEL:ELIKEM SETSOAFIAE:MAIL:TEL: