Description of the monthly sea ice production data set in the Southern
Ocean.

The sea ice production analysis is calculated daily on the polar
stereographic grid with a spatial resolution of 6.25 km.

The analysis uses AMSR-E microwave data, and ERA5 data with a spatial
resolution of 0.25 deg. x 0.25 deg..

The mapping of sea ice production is described in

Nakata K., K. I. Ohshima, and S. Nihashi, 2021: Mapping of active
frazil for Antarctic coastal polynyas, with an estimation of sea-ice
production. Geophyisical Research Letters, 48, e2020GL091353, doi:10.
1029/2020GL091353

In the estimation of ice production, we used the thin ice thickness  
algorithm with discrimination of ice type (active-frazil and thin solid  
ice), developed by the following paper.

Nakata, K., K. I. Ohshima, S. Nihashi, 2019: Estimation of thin ice  
thickness and discrimination of ice type from AMSR-E passive microwave  
data. IEEE Transactions on Geoscience and Remote Sensing, 57(1),  
263-276, doi:10.1109/TGRS.2018.2853590.

When you will use these data set in your paper, please be sure to refer
Nakata et al. (2021) and Nakata et al. (2019).

In this web site, the sea ice production analysis is available in
individual yearly files of individual monthly data products.

The latitude/longitude and pixel-area grid data can be downloaded from
the website of the National Snow and Ice Data Center (NSIDC) (
https://nsidc.org/data/polar-stereo/tools_geo_pixel.html). 

Kazuki Nakata
---------------
E-mail: nakata_kazuki@lowtem.hokudai.ac.jp
Phone: +81-11-706-5483
FAX: +81-11-706-7362

Postal Address:
Institute of Low Temperature Science,
Hokkaido University,
Kita-19, Nishi-8, Kita-ku,
Sapporo 060-0819, Japan


Kay I. Ohshima
---------------
E-mail: ohshima@lowtem.hokudai.ac.jp
Phone: +81-11-706-5481
FAX: +81-11-706-7362

Postal Address:
Institute of Low Temperature Science,
Hokkaido University,
Kita-19, Nishi-8, Kita-ku,
Sapporo 060-0819, Japan


UPDATED: 17 May 2021