[ncl-talk] Onset dates

[Soma Roy]

Thank you very much for sharing these information.

Cheers!
Soma

On Fri, Nov 23, 2018, 21:24 Dennis Shea <shea at ucar.edu wrote:

> As noted, there is no NCL software that calculates (Indian) monsoon onset
> and withdrawal.
>
> Much has been written on this topic.
> Please see the following. Perhaps, you could use the information to write
> your own.
>
> *Hydrological Definition of Indian Monsoon Onset and Withdrawal*
> <https://doi.org/10.1175/1520-0442(2003)016%3C3200a:AHDOIM%3E2.0.CO;2>
> J. Fasullo and P. J. Webster
> J. Climate: 2002
>
>
> *Objective Determination of the Date of Onset of Monsoon  Rainfall over
> India based on Duration of Persistence
> <http://www.cmmacs.ernet.in/cmmacs/Publications/resch_rep/rrcm0711.pdf>*P.
> Goswami and K.C. Gouda
> Research Report RR CM 0711
> June 2007
>
> *Objective determination of monsoon season onset, withdrawal, and length*
> <https://doi.org/10.1029/2009JD012795>
> B.I. Cook, B.M.Buckley
> Climate and Dynamics (2009)
>
> *Determination of Onset an d Withdrawal Dates of Summer Monsoon  across
> India using NCEP/NCAR Re-analysis*
> <https://www.tropmet.res.in/~lip/Publication/RR-pdf/RR-124.pdf>
> N. Singh, A.A. Ranade
> 2010
>
>
> *Characterizing the onset and demise of the Indian summer monsoon
> <https://doi.org/10.1002/2016GL068409>*R. Noska, V. Misra
> 20 April 2016
>
>
> *Onset and withdrawal of the large-scale South Asian monsoon:     *
> <https://doi.org/10.1002/2016GL071026>
> * A dynamical definition using change point detection: MONSOON ONSET*
> <https://doi.org/10.1002/2016GL071026>
> J.M. Walker, S. Bordoni
> Geophysical Research Letters 43(22) ·
> November 2016
>
> On Fri, Nov 23, 2018 at 6:02 AM Appo derbetini <appopson4 at gmail.com>
> wrote:
>
>> Hello Soma,
>> I don't think that there is a tool available in NCL which can be used for
>> what you are requesting.
>> Here a link to a good paper where Onset and Retreat of rainy seasons are
>> computed
>>
>> https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2016JD025428
>>
>>
>> Cheers
>>
>> Le jeu. 22 nov. 2018 à 21:46, Soma Roy <somaroy892 at gmail.com> a écrit :
>>
>>> Hello,
>>> Is there any technique available in ncl to calculate *onset* and
>>> *withdrawal* dates as *Julian* *days* (in spatial domain) for
>>> individual years?
>>>
>>> I am using daily gridded dataset over Indian region.
>>>
>>> Please kindly inform me the above.
>>>
>>> Thanking you,
>>> Soma
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