Passive microwave derived corrected AMSR2 Antarctic sea ice motion dataset - 2017

Full description

This dataset is daily passive microwave-derived Advanced Microwave Scanning Radiometer 2 (AMSR2) Antarctic sea ice motion dataset, which is the version of rectified two problems exist in Kimura et al. (2013) sea ice motion product, with ascending (ASC), descending (DES) and combined datasets, which format is DAT file. It is produced at 60×60 km resolution on a regular 127×134 grid covering the entire Southern Ocean (40°~ 90° S, -180°~180° E), for the period of 2017-05-20 to 2017-11-26 (186 days) and 2018-04-08 to 2018-08-20 (135 days). These were calculated by applying the MCC method to 36 GHz, 10 km resolution AMSR2 Level-3 36 GHz TB images (both vertical and horizontal polarization) from the Japan Aerospace Exploration Agency (JAXA).

Included datasets:
latitude
- description: latitude of each gridded pixel
- dimensions: 2
- size: [127, 134]

longitude
- description: longitude of each gridded pixel
- dimensions: 2
- size: [127, 134]

u_weddell
- description: daily ASC, DES and combined u component of sea ice velocity on each pixel, from 2018-04-08 to 2018-08-20 covered entire central Weddell Sea buoy trajectory time-span, 135 days in total.
- dimensions: 4
- size: [127, 134, 135, 3] ([x coordinate, y coordinate, days, ASC/DES/combined])

v_weddell
- description: daily ASC, DES and combined v component of sea ice velocity on each pixel, from 2018-04-08 to 2018-08-20 covered entire central Weddell Sea buoy trajectory time-span, 135 days in total.
- dimensions: 4
- size: [127, 134, 135, 3] ([x coordinate, y coordinate, days, ASC/DES/combined])

u_ross
- description: daily ASC, DES and combined u component of sea ice velocity on each pixel, from 2017-05-20 to 2017-11-26 covered entire Ross Sea buoy trajectory time-span, 186 days in total.
- dimensions: 4
- size: [127, 134, 186, 3] ([x coordinate, y coordinate, days, ASC/DES/combined])

v_ross
- description: daily ASC, DES and combined v component of sea ice velocity on each pixel, from 2017-05-20 to 2017-11-26 covered entire Ross Sea buoy trajectory time-span, 186 days in total.
- dimensions: 4
- size: [127, 134, 186, 3] ([x coordinate, y coordinate, days, ASC/DES/combined])

Study domain: 40°~ 90° S, -180°~180° E

Time-scale: 24 h (for ASC and DES datasets) and 39 h (for combined dataset).

Time period: from 2017-05-20 to 2017-11-26 (186 days) and from 2018-04-08 to 2018-08-20 (135 days).

Variables and geographic projection detail are saved in the dataset as Readme.txt

Lineage

Progress Code: completed

Notes

Purpose
Rectified published Kimura et al. (2013) passive microwave-derived Antarctic sea ice motion dataset. To investigate its impacts on sea ice kinematics.