[gradsusr] OLR ANOMALY INDEX STANDARDIZATION

[Rekha Bharali]

Yes I want to calculate the standardize value given in the CPC data file
from the original data from the same file attached with this file
On Jan 22, 2015 5:04 PM, "Carlos Batista" <krlosbatist at gmail.com> wrote:

> I see your date...
>
> The normalized is make
>
> your data value (X) minus the average this data (x), divided by the
> standard deviation of a time series (y)
>
> n=X-x/y
>
> you'll do  average this your data by OLR?
>
> 2015-01-22 9:20 GMT-02:00 Rekha Bharali <rekha.bharali06 at gmail.com>:
>
>> Thank you for your prompt reply.
>>
>> Actually what I am doing is :
>>
>> (1) Calculate mean for the base period 1981-2010
>> (2) Calculate standard deviation  for the above period
>> (3) Standardize the OLR anomaly by the following formula:
>>
>>                      (present OLR-base period mean) / standard deviation
>>
>> But I am not sure whether I am doing it correct or not. Because my
>> result does not match with the standard value attached with this mail.
>>
>> I think the standardization method is different then what I am doing.
>>
>> I will follow your suggestion and let you know.
>> Thank you
>>
>> On 1/22/15, Carlos Batista <krlosbatist at gmail.com> wrote:
>> > You want to split the average standard deviation?
>> >
>> > ******************************************
>> > * Remove by variable tend
>> > ******************************************
>> > *my variable number 1****
>> >
>> > ltrend vaz.2 vazm slope12 rmse12
>> > define dvaz12=vaz.2-vazm
>> >
>> > ***** If you want to make average moving*****
>> > rmean dvaz12 6 dvaz6mm
>> > *************************************************
>> > *my variable 2****
>> > ltrend mediaan mediaand s e
>> > define mediaanm=mediaan-mediaand
>> >
>> > ******************************************
>> > * Here I normalizeted my variables  - Divided by the standard deviation
>> > ******************************************
>> >
>> > dp1=sqrt(ave(pow(dvaz6mm,2),t=1,t=33))
>> > set ccolor 1
>> > set cthick 6
>> > set cmark 0
>> > d dvaz6mm/dp1
>> >
>> > dp2=sqrt(ave(pow(mediaanm,2),t=1,t=33))
>> > set gxout bar
>> > set bargap 40
>> > set barbase 0
>> > set baropts outline
>> > set ccolor 4
>> > d mediaanm/dp2
>> >
>> > **************************************
>> >
>> > The rmean you find in
>> >
>> > *...http://www.atmos.umd.edu/~bguan/grads/GrADS_Scripts.html
>> > <http://www.atmos.umd.edu/~bguan/grads/GrADS_Scripts.html>*
>> >
>> > Carlos
>> >
>> >
>> > 2015-01-22 3:33 GMT-02:00 Rekha Bharali <rekha.bharali06 at gmail.com>:
>> >
>> >> Can anybody please help me with a grads script to calculate Standardize
>> >> OLR anomaly index
>> >> using Grads. It will be agreat help.
>> >>
>> >> --
>> >> .......................................................................
>> >> Rekha Bharali Gogoi
>> >> NE-SAC
>> >> Dept. of Space
>> >> Govt. of India
>> >> Meghalaya
>> >>
>> >> _______________________________________________
>> >> gradsusr mailing list
>> >> gradsusr at gradsusr.org
>> >> http://gradsusr.org/mailman/listinfo/gradsusr
>> >>
>> >>
>> >
>>
>>
>> --
>> .......................................................................
>> Rekha Bharali Gogoi
>> Scientist 'SC'
>> NE-SAC
>> Dept. of Space
>> Govt. of India
>> Meghalaya
>>
>> _______________________________________________
>> gradsusr mailing list
>> gradsusr at gradsusr.org
>> http://gradsusr.org/mailman/listinfo/gradsusr
>>
>>
>
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