[gradsusr] Standard deviation of an area

[Julio Martinez]

Hi David,
I think you could try with tloop command...

Julio N. Martínez Sánchez
M.C. en Oceanografía Física
Consultor en SitioSubgerencia de Pronóstico a Mediano y Largo PlazoGerencia de Meteorología y ClimatologíaServicio Meteorológico NacionalExt. 3156

From: davidnielsen at id.uff.br
Date: Wed, 19 Nov 2014 13:12:34 -0200
To: gradsusr at gradsusr.org
Subject: [gradsusr]  Standard deviation of an area

Dear all grads users, 
I would like to calculate the standard deviation of an area in Grads.
I have a NetCDF wekly time series of SST (attached), and I am able to calculate the average of a certain area (defining LAT and LON) value using the "aave" formula, for each value of time, and generate a new series - ok. In addition to this seires, I would like to generate a series of standard deviations of this average, also for each time in the series. In other words, I need to to know, for a given area and time, what is the standard deviation of my variable?
Please find attached an example of a NetCDF file I want to treat this way: 1. Calculate average of SST in a certain area (lat, lon) using aave, for each time value2. Calculate standard deviation of SST in a certain area (lat, lon), for each time value
Would anybody have any kind suggestions on how to address this #2 task?
Many thanks in advance,

-- 
David Marcolino NielsenEngenharia de Recursos Hídricos e do Meio AmbienteUniversidade Federal Fluminensedavidnielsen at id.uff.br

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