[ncl-talk] Ice/liquid water path

[Marston Johnston]

Hi,
Thanks a lot :-)
This is exactly what I am looking for.

Best,
/M
On 11 Jul 2016 04:12, "Dennis Shea" <shea at ucar.edu> wrote:

> Well, NCL has several standard integration functions:
>
> http://www.ncl.ucar.edu/Document/Functions/Built-in/simpne.shtml
> http://www.ncl.ucar.edu/Document/Functions/Built-in/simpeq.shtml
> http://www.ncl.ucar.edu/Document/Functions/Built-in/ftcurvi.shtml
>
> ===
> However, I suggest weighting the values by the appropriate layer
> thicknesses.
>
>     vertical_average  = SUM[q*dp]/SUM[dp]
>     vertical_integral   = SUM[q*dp]
>
>      LWP = SUM[q*dp]/gravity    ; g/m^2
>
> ===
>
> 'dp' can be calculated via:
>
> http://www.ncl.ucar.edu/Document/Functions/Built-in/dpres_hybrid_ccm.shtml
>
> http://www.ncl.ucar.edu/Document/Functions/Built-in/dpres_plevel.shtml
>
> ===
>
> The 6.4.0 NCL has
>
>
> http://www.ncl.ucar.edu/Document/Functions/Contributed/wgt_vertical_n.shtml
>
> The *beta* 6.4.0 can be downloaded from:
>
>        http://www.cgd.ucar.edu/~shea/contributed.ncl_beta_640
>
> To use it:
>
>    load "./contributed.ncl_beta_640
>
> or
>
>    load "/where_ever/you_put_it/contributed.ncl_beta_640
> ===
> Another, definition of LWP is here
>
> https://climatedataguide.ucar.edu/climate-data/liquid-water-path-overview
>
> Good Luck
>
> On Sat, Jul 9, 2016 at 4:50 PM, Marston Johnston <shejo284 at gmail.com>
> wrote:
>
>> Hi,
>>
>> I'm wondering if NCL has a function for calculating the vertically
>> integrated ice/liquid water path? I did this a long time ago in python
>> using a trapezoid rule but I can't seem to find something similar in NCL.
>> If anyone has a code to do this, I would appreciate some tips in how to do
>> it in NCL.
>>
>> /M
>>
>>
>>
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>
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