[RegCNET] lake model
Robert Mera
rjmera at ncsu.edu
Thu Jun 28 23:38:01 CEST 2007
Hi Richard / Imran,
Indeed we at NC State were successful with the parallel version. Jared
Bowden has more details.
Robert Mera
Richard Anyah wrote:
> Hi Imran,
> I know the group at NC State University ( Prof. Fred Semazzi's Research
> Group) succefully managed to run latest version of lake model in parallel.
>
> Richard
>
>
> IMRAN NADEEM wrote:
>
>
>> Hi Steve,
>>
>> I heard that present version of lake model works only in
>> serial mode. What about latest version which you are going to
>> put in the latest version of RegCM3. Does that works also in Parallel
>> mode?
>>
>> Regards
>> Imran Nadeem
>>
>> On 6/28/07, *Richard Anyah* <anyah at cep.rutgers.edu
>> <mailto:anyah at cep.rutgers.edu>> wrote:
>>
>> Steve,
>> That would be great. Update us when you get time to do it.
>> Thanks
>> Richard
>>
>>
>> Steve Hostetler wrote:
>>
>> > Richard,
>> > I have a newer version of the lake model. I am plan to put it into
>> > the newest version of RegCM when I can find the time-- maybe
>> sometime
>> > this fall.
>> >
>> > steve
>> >
>> >-----------------------------------------------------
>> >Steve Hostetler
>> >US Geological Survey
>> >Department of Geosciences
>> >Room 104 Wilikinson Hall
>> >Oregon State University
>> >Corvallis, OR 97331-5560
>> >tel 541 737-8928 fax 541 737-1200
>> >
>> >
>> >
>> >
>> > Richard Anyah wrote:
>> >
>> >>Hi Mike,
>> >>When the lake is turned off, the lake surface is treated as
>> inland water
>> >>body(patch) in the land surface scheme(BATS). In which case, the
>> fluxes
>> >>over the water patch may be different from the rest of the land
>> cells.
>> >>But, when you use the 1D lake, you introduce the vertical flux
>> transport
>> >>within the water column(full depth) and to the atmosphere which mayl
>> >>signficantly change the atmospheric response; depending on the
>> size and
>> >>depth of the lake.
>> >>
>> >>
>> >>The reference below may be useful. They used one of the original
>> >>versions of RegCM. The lake model has not changed so much, I
>> think. You
>> >>could also check Hostetler et al., 1993 (check details in the
>> ref. below).
>> >>
>> >>*
>> >>*Gary T. Bates, Steven W. Hostetler, and Filippo Giorgi, 1995:
>> Two-Year
>> >>Simulation of the Great Lakes Region with a Coupled Modeling System.
>> >>Monthly Weather Review:123, 1505 1522
>> >> Richard
>> >>
>> >>
>> >>Michael Notaro wrote:
>> >>
>> >>
>> >>
>> >>>Thanks, Richard! You have been quite helpful. I will look at
>> those
>> >>>papers.
>> >>>
>> >>>I want to clarify one thing.
>> >>>When the lake is "turned off" then, does that mean the the lake
>> does
>> >>>not exist
>> >>>and it is treated as land (bare soil, forest?)? So, if I run with
>> >>>and without the lake model,
>> >>>the difference is the effect of the existence of those lakes on the
>> >>>atmosphere? I was interested
>> >>>in investigating how the lakes affect the local climate.
>> >>>
>> >>>How is lake ice treated? Unfortunately, the papers on Africa won't
>> >>>address that since
>> >>>they are for a warm climate.
>> >>>
>> >>>Does anyone know of papers using RegCM3 and the lake model for the
>> >>>Great Lakes?
>> >>>
>> >>>Thanks, Mike
>> >>>
>> >>>
>> >>>
>> >>>On Jun 28, 2007, at 8:33 AM, Richard Anyah wrote:
>> >>>
>> >>>
>> >>>
>> >>>>Hi Mike,
>> >>>>
>> >>>>The following publications may be relevant, though they use lake
>> >>>>model from variants of the RegCM family for Lake Victroia in
>> >>>>equatorial eastern Africa.
>> >>>>
>> >>>>
>> >>>>
>> >>>>
>> >>>>
>> >>>>
>> >>>>>I have some general questions about the lake model in RegCM3.
>> >>>>>In particular, relating to the Great Lakes.
>> >>>>>
>> >>>>>Could someone email me the references to some papers that use the
>> >>>>>lake model with regcm3? I would like to see previous
>> applications
>> >>>>>
>> >>>>>
>> >>>>>
>> >>>>1. Song, Y., F.H.M. Semazzi and L. Xie, 2002: Development of a
>> >>>>coupled regional climate simulation model for the Lake Victoria
>> >>>>Basin. In /The East African Great
>> Lakes,Limnology,Paleolimnology and
>> >>>>Biodiversity/, Odada E and Olago G(eds). Gordon and Breach:
>> >>>>Armsterdam: 141-154
>> >>>>
>> >>>>2. Song, Y., F.H.M. Semazzi and L. Xie, and L.J. Ogallo, 2004: A
>> >>>>coupled regional climate model for Lake Victoria basin of East
>> >>>>Africa. /Int. J. Climatol/. *24*, 57-75
>> >>>>
>> >>>>
>> >>>>3. Anyah, R.O., and F. H. M. Semazzi, 2004: Simulation of the
>> >>>>response of Lake Victoria basin climate to lake surface
>> >>>>temperatures./Theor. Appl. Climatol/,* 79, *55-69
>> >>>>
>> >>>>
>> >>>>4. Anyah, R.O., F.H.M. Semazzi and Lian Xie, 2006: Simulated
>> >>>>physical mechanisms associated with multi-scale climate
>> variability
>> >>>>over Lake Victoria Basin in East Africa, Monthly Weather Review:
>> >>>>134,3588-3609
>> >>>>
>> >>>>
>> >>>>
>> >>>>>What dynamics does the lake model simulate? Lake ice
>> fluctuations?
>> >>>>>Changes in lake level?
>> >>>>>
>> >>>>>
>> >>>>>
>> >>>> You may have to compute changes in E, P and horizonatal
>> >>>>mosture convergence to infer lake level fluctuations.
>> >>>> Also the 1D lake use simplified vertical exhange of moisture
>> >>>>and heat between the lake and the atmosphere.(See refs. 1, 2 and 4
>> >>>>above)
>> >>>>
>> >>>>
>> >>>>
>> >>>>>If the lake model is turned off, does the model assume
>> >>>>>climatological lake
>> >>>>>temperatures or is the lake replaced by land?
>> >>>>>
>> >>>>>
>> >>>>>
>> >>>>As far as I know when the lake is tuurned off, the "lake" surface
>> >>>>temperature uses the surface temperature, unless you physically
>> >>>>prescribe 'climatological' temperature over the lake surface
>> >>>>
>> >>>>
>> >>>>
>> >>>>Hope the information may be helpful.
>> >>>>
>> >>>>Richard
>> >>>>
>> >>>>--
>> >>>>------------------------------------------------
>> >>>>Richard Anyah
>> >>>>Research Associate
>> >>>>Center for Environmental Prediction
>> >>>>Department of Environmental Sciences
>> >>>>Rutgers University
>> >>>>14 College Farm RD
>> >>>>New Brunswick, NJ 08901-8551
>> >>>>Phone: (732) 932 9735
>> >>>>Fax: (732) 932 8644
>> >>>>-----------------------------------------------
>> >>>>
>> >>>>
>> >>>>
>> >>>>
>> >>>>
>> >>>>
>> >>>>
>> >>>>
>> >>
>> >>
>>
>>
>> --
>> ------------------------------------------------
>> Dr. Richard Anyah
>> Research Associate
>> Center for Environmental Prediction
>> Department of Environmental Sciences
>> Rutgers University
>> 14 College Farm RD
>> New Brunswick, NJ 08901-8551
>> Phone: (732) 932 9735
>> Fax: (732) 932 8644
>> http://www.envsci.rutgers.edu/~anyah
>> <http://www.envsci.rutgers.edu/%7Eanyah>
>> -----------------------------------------------
>>
>>
>>
>>
>>
>>
>>
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>>
>>
>> --
>> Imran Nadeem
>> PhD Student
>> Institute of Meteorology
>> Department of Water, Atmosphere and Environment
>> Uni. of Natural Resources and Applied Life Sciences (BOKU)
>>
>> Peter-Jordan Strasse 82
>> 1190 Vienna, Austria
>>
>> Mobile: +43 699 1194 3044
>> Tel.: +43 1 47654 5614
>> Fax: +43 1 47654 5610
>>
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