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World Community Grid Forums
Category: Completed Research
Forum: AfricanClimate@Home
Thread: Question about modeling of south african climate |
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Thread Status: Active Total posts in this thread: 19
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martianmoons
Cruncher USA Joined: Nov 29, 2006 Post Count: 49 Status: Offline Project Badges: 
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Then, which phase are we now? Is it the first one, in which the aim is to gain the basic information about the south african climate? thanks, suguruhirahara What specific southern African countries are included in the modeling geography? Just curious! :) |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hello,
Then, which phase are we now? Is it the first one, in which the aim is to gain the basic information about the south african climate? thanks, suguruhirahara What specific southern African countries are included in the modeling geography? Just curious! :) That's what is curious for me, too. According to the screensavers which Sekerob uploaded here, the countries are South Africa, Lesotho, Swaziland, most of Namibia and Botswana, a part of Zimbabwe and Mozambique. These countries are damaged due to not only rather politics (in Zimbabwe, for example) than climate change, but also rather the climate change (in Mozambique) What as a citizen of Japan I can do now for the people in this project is to crunch climate models as much as possible, hoping that the models would help the researchers understand and represent the climate of the region. thanks, suguruhirahara |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
Please refer to earlier post in this thread for the answer of what countries planned to included.... it is run by an SA university, but the name is "AfricanClimate@Home": http://www.worldcommunitygrid.org/forums/wcg/printpost?post=126185
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WCG
----------------------------------------Please help to make the Forums an enjoyable experience for All! [Edit 1 times, last edit by Sekerob at Sep 5, 2007 9:26:12 PM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Thanks, sekerob.
I hope that the project leaders give us information about the project itself much more :D |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Just curious, how do the resolutions in this model compare, say, to the resolution of models for the U.S.A.?
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
The response would have to ask, which models in particular?
Long term global climate models (covering the USA and elsewhere) will have a coarse resolution. Short-term weather forecasting models for the USA alone will have a very fine resolution. Basically the resolution of the model depends on it's overall length (are you modelling an hour or a century), and the available CPU time. |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I'm asking about the basic U.S. equivalents of the type of model we are computing for Africa.
The response would have to ask, which models in particular? Long term global climate models (covering the USA and elsewhere) will have a coarse resolution. Short-term weather forecasting models for the USA alone will have a very fine resolution. Basically the resolution of the model depends on it's overall length (are you modelling an hour or a century), and the available CPU time. |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
You may want to visit the Research FAQs for AC@H . One paragraph states:
----------------------------------------Why is this project just looking at Africa? Africa is already vulnerable to extremes in climate, and current climate change projections suggest that the region will be more vulnerable in the future. Thus a climate study for this region is important both for economic reasons and for understanding future vulnerability. The climate modeling techniques developed here may be applied to other regions of the world in the future. Also the Research pages of the CSAG scientists show a paper which speaks of MM5 using blocks of 50km. The AC@H project i think uses blocks of 30km. One well known package well suited for this purpose is the MM5 regional model [2]. Its unrestrictive licensing terms makes it quite popular among meteorologists. It is used as an operational forecast model in many countries such as the USA and is also the tool of choice for many case studies. In Brazil MM5 has been employed to investigate the wind resources of that country [6]. Here at the Climate Systems Analysis Group within the University of Cape Town it forms the basis of some extensive climate change research. oogle, my best search companion provides some info like: http://www.usatoday.com/weather/wmodlist.htm which notes the NCEP, previously mentioned by the AC@H scientist as a provider of source data. The article speaks of ETA models which use blocks of 29km, but depending on objective, the variations look at ranges from 150km to 10km (hurricanes). Suggest we leave the question for the project scientists to answer pertinently, or oogle a bit more.
WCG
Please help to make the Forums an enjoyable experience for All! |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
As MikeMarsUK said, the resolutions will depend on which model is being used and for which purpose.
For our specific project we should also remember that increasing the resolution would bring extra problems with the size of the work units. That's something we are working for phase 2, we want to perform simulations with higher resolutions and on a bigger domain. The resolution of 30km we are using is fine enough to the kind of study we want to do. The model used here (WRF model) has been implemented in finer resolutions (1-2km) for other kind of studies. |
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