[ecco-support] [EXTERNAL] Clarification of some ECCOv4r4 daily fields stored at NAS

[Jean-Michel Campin]

Hi Ashneel,

Just a small comment regarding Mixed-layer depth criteria:
> Mixed-layer depth is determined by the depth where waters are first 0.8 degrees Celsius colder than the surface. See Kara et al. (JGR, 2000).
To be more precise, MXL-depth is the depth where waters is denser than 0.8 degrees Celsius colder surface water.
This turns to be a nice feature that provides a larger density difference in warm SST regions and
smaller density difference in cold/polar regions.

Cheers,
Jean-Michel

On Fri, Dec 17, 2021 at 05:35:17PM +0000, Wang, Ou (US 329B) wrote:
> Ashneel,
> 
> EXFuwind and EXFvwind are in the model x- and y-directions, not in the east-west and north-south directions.
> 
> Mixed-layer depth is determined by the depth where waters are first 0.8 degrees Celsius colder than the surface. See Kara et al. (JGR, 2000).
> 
> Although we are still keeping the ECCO V4r4 daily fields at NAS online, PO.DAAC is now the official host of ECCO V4r4 data (including daily fields). You can find them at https://podaac.jpl.nasa.gov/ECCO. Click the ???Data??? button on the left to find and download the data you want. The data are provided as NetCDF files, with updated meta data including the information that you are asking for.
> 
> Best,
> Ou
> 
> From: ecco-support <ecco-support-bounces at mit.edu> on behalf of Ashneel Chandra <Ashneel.Chandra at uib.no>
> Reply-To: "ECCO support list, wider membership" <ecco-support at mit.edu>
> Date: Friday, December 17, 2021 at 9:19 AM
> To: "ecco-support at mit.edu" <ecco-support at mit.edu>
> Subject: [EXTERNAL] [ecco-support] Clarification of some ECCOv4r4 daily fields stored at NAS
> 
> Hi,
> 
> I needed some clarification for a few ECCOv4r4 daily variables stored at NAS.
> I wanted to know if the forcing variables EXFuwind and EXFvwind are in the traditional zonal (East-West) and meridional (North-South) directions or are they in the x and y directions for the tiles?
> Also, I wanted to know what criteria the MXLDEPTH is based on and how it is estimated. Is it based on some density threshold?
> 
> Sincerely
> 
> 
> Ashneel Chandra
> PhD Candidate in Climate Dynamics
> Geophysical Institute
> University of Bergen
> uib.no/en/persons/Ashneel.Chandra<https://urldefense.us/v3/__https:/www.uib.no/en/persons/Ashneel.Chandra__;!!PvBDto6Hs4WbVuu7!bfb-kUMlNafFzUTMLEbqikgw2u0MYTCJn7igZkdE8Ld8KxCmPKya6expqDgcRsGRKkA$>
> 
> 

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