Question about MERRA

[Arlindo da Silva]

On Wed, Jan 27, 2010 at 5:13 PM, Thiago Veloso <thi_veloso at yahoo.com.br>wrote:

>   Accordingly to this website (
> http://disc.sci.gsfc.nasa.gov/daac-bin/DataHoldings.pl), there is no
> precipitation dataset on the listings.
>
>
MERRA's emphasis is on the hydrological cycle, therefore precipitation is a
key parameter. If you have the opengrads bundle start

% merra

then click on the [Monthly]/[Surface Fluxes] and select any of the
precipitation variables.


>   However, I'd recommend you to look for precipitation data on GPCP, TRMM
> or CMORPH programs.
>
>
Precipitation from reanalyses are model derived parameters. Although MERRA
precipitation has been evaluated against GPCP and other datasets, this is
not a direct measurement. It is most useful in the context of the other
climate parameters provided by MERRA.

   Arlindo




>   Best regards,
>
>   Thiago.
>
> --- On *Wed, 27/1/10, Diego Souza <dsouza at CPTEC.INPE.BR>* wrote:
>
>
> From: Diego Souza <dsouza at CPTEC.INPE.BR>
> Subject: Question about MERRA
>
> To: GRADSUSR at LIST.CINECA.IT
> Date: Wednesday, 27 January, 2010, 15:04
>
>
> Hi,
>
> I would like kown if have precipitation data in the MERRA datasets.
>
> Thanks,
> _________________________________________
>
> Diego Oliveira de Souza
> Grupo de Estudos Ambientais Integrados (GEAI)
> Instituto Nacional de Pesquisas Espaciais - INPE
> Cachoeira Paulista - SP
> Fone: (12) 31869512
> Cel: (12) 91219668
> _________________________________________
>
>
>


-- 
Arlindo da Silva
dasilva at alum.mit.edu
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