Question about Water Path (WP) unit

[joongh...@stonybrook.edu]

Unit for water path is in 'cm'. Is there a way to get ti convert it to g/m2 ? There is no density given in the dataset, so I can't figure out how to get it to the unit I need. Help, please?

Thank you.

[Ken Knapp - NOAA Federal]

Hi

I would use the density of liquid water, which is close to 1.0 g/cm^3. Which makes 1cm ~ 1 kg/m^2 (or 1000 g/m^2).

Hope this helps.

-Ken

On Mon, May 11, 2020 at 1:04 PM <joongh...@stonybrook.edu> wrote:

Unit for water path is in 'cm'. Is there a way to get ti convert it to g/m2 ? There is no density given in the dataset, so I can't figure out how to get it to the unit I need. Help, please?

Thank you.

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[joongh...@stonybrook.edu]

Ahh. I was kinda expecting different vertical densities. Thank you for the help!

On Monday, May 11, 2020 at 2:36:51 PM UTC-4, Ken Knapp - NOAA Federal wrote:

Hi

I would use the density of liquid water, which is close to 1.0 g/cm^3. Which makes 1cm ~ 1 kg/m^2 (or 1000 g/m^2).

Hope this helps.

-Ken

On Mon, May 11, 2020 at 1:04 PM <joong...@stonybrook.edu> wrote:

Unit for water path is in 'cm'. Is there a way to get ti convert it to g/m2 ? There is no density given in the dataset, so I can't figure out how to get it to the unit I need. Help, please?

Thank you.

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[Subin Jose]

Hi Ken

This enquiry is also related to ISCCP cloud LWP. If we do conversion as discussed previously LWP values are becoming quite unreasonable. For instance if LWP of strato-cumulus cloud is 64 cm; then after conversion it becomes 64000 g/m2. !!

First I removed the fill values (-25000, 28550) and done offset and scale factor correction.  Kindly suggest