Near-Real-Time NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration, Version 2
Data set id:
G10016
DOI: 10.7265/tgam-yv28
This is the most recent version of these data.
Version Summary
Version Summary
* NSIDC-produced daily and monthly NASA Team (NT) and NASA Bootstrap (BT) variables are included.
* Four variables in the daily files and four variables in the monthly files have been renamed.
* Gap filling implemented using spatial and temporal interpolation. Two new flag variables indicate when interpolation has been done.
* Arctic pole hole filled by spatial interpolation.
* NSIDC’s BT algorithm updated to version 3.1.
* Updated the NASA Team weather filter threshold for the Southern hemisphere instruments.
* In addition to the BT weather and land spillover filters, the NT filters are now also applied.
* Individual land masks have been merged into one composite land mask.
* Four variables in the daily files and four variables in the monthly files have been renamed.
* Gap filling implemented using spatial and temporal interpolation. Two new flag variables indicate when interpolation has been done.
* Arctic pole hole filled by spatial interpolation.
* NSIDC’s BT algorithm updated to version 3.1.
* Updated the NASA Team weather filter threshold for the Southern hemisphere instruments.
* In addition to the BT weather and land spillover filters, the NT filters are now also applied.
* Individual land masks have been merged into one composite land mask.
Overview
This data set provides a near-real-time Climate Data Record (CDR) of sea ice concentration from passive microwave data. The Near-real-time NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration (NRT CDR) data set is the near-real-time version of the final NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration (G02202). The NRT CDR is designed to fill the temporal gap between updates of the final CDR, occurring every three to six months, and to provide the most recent data.
Parameter(s):
SEA ICE CONCENTRATION
Platform(s):
DMSP 5D-3/F18
Sensor(s):
SSMIS
Data Format(s):
NetCDF
Temporal Coverage:
1 April 2024 to present
Temporal Resolution:
- 1 day
Spatial Resolution:
- 25 km
- 25 km
Spatial Reference System(s):
NSIDC Sea Ice Polar Stereographic North
EPSG:3411
NSIDC Sea Ice Polar Stereographic South
EPSG:3412
Spatial Coverage:
N:
89.84
S:
31.1
E:
180
W:
-180
N:
-39.36
S:
-89.84
E:
180
W:
-180
Blue outlined yellow areas on the map below indicate the spatial coverage for this data set.
Data Access & Tools
Documentation
User Guide
ATBDs
NSIDC Special Reports
Help Articles
General Questions & FAQs
NSIDC currently archives passive microwave sea ice concentration products based on two algorithms: the NASA Team algorithm and the Bootstrap algorithm. Both algorithms were developed by researchers at the NASA Goddard Space Flight Center in the 1980s.
How to Articles
NOAA@NSIDC data recently transitioned to HTTPS. The directory structure has NOT changed, but the beginning of the URL has changed from:
ftp://sidads.colorado.edu/pub/DATASETS/
to:
Currently three NOAA@NSIDC data sets are available in NOAA's PolarWatch Data Catalog. Please note that in the catalog the Climate Data Record (CDR) data sets are split up into Antarctic and Arctic data sets: