[RegCNET] lake model

Richard Anyah anyah at cep.rutgers.edu
Thu Jun 28 22:40:53 CEST 2007


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 I have a newer version of the lake model.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
>
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