[RegCNET] lake model
Michael Notaro
mnotaro at wisc.edu
Fri Jun 29 18:00:20 CEST 2007
If any changes are needed to run RegCM3+lake model in parallel,
could someone please post them? I would like to try running at NCAR
using multiple processors to speed up the run.
Much appreciated.
Mike
On Jun 28, 2007, at 3:40 PM, 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 I have a newer version of the lake model.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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