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Chukchi Sea Landfast Sea Ice Extent Summarized by Month and 9-year Periods

A landfast ice dataset along the Chukchi Sea continental shelf, spanning 1996-2023. Spatial resolution is 100 m. Each month of the ice season (October through July) is summarized over three 9-year periods (1996-2005, 2005-2014, 2014-2023) using the minimum, maximum, median, and mean distance of SLIE from the coastline. The minimum extent indicates the region that was always occupied by landfast ice during a particular calendar month. The median extent indicates where landfast occurred at least 50% of the time. The maximum extent represents regions that may only have been landfast ice on one occasion during the selected time period. The mean SLIE position for the each month and and time period is also included. The dataset is derived from three sources: seaward landfast ice images derived from synthetic aperture radar images from the RadarSAT and EnviSAT constellations (1996-2008), the Alaska Sea Ice Program (ASIP) ice charts (2008-2017, 2019-2022), and the G10013 SIGID-3 Arctic Ice Charts produced by the National Ice Center (NIC; 2017-2019, 2022-2023).

Within each GeoTIFF file there are 8 different pixel values representing different characteristics:

0 - Ocean

1 - Maximum Landfast Ice Extent

2 - Median Landfast Ice Extent

3 - Minimum Landfast Ice Extent

4 - Mean Landfast Ice Edge

5 - Land

6 - Out of Domain

7 - Coast Vector Shadow

The file naming convention is as follows:

Chukchi_$month_$era_SLIE_MMM_summary.tif

For example, the name

Chukchi_05_2005-2014_SLIE_MMM_summary.tif

indicates the file represents data for May 2005-2014.

Simple

Date (Publication)
2024-12-17
Credit
Andrew Einhorn
Credit
Andrew Mahoney
Status
On going
Point of contact
  Scenarios Network for Alaska and Arctic Planning
Principal investigator
  - Andy Mahoney
Maintenance and update frequency
As needed
Theme
  • sea ice
  • observed
Use constraints
License
Other constraints
https://creativecommons.org/licenses/by/4.0/
Spatial representation type
Grid
Distance
100  m
Metadata language
eng
Character set
UTF8
Topic category
  • Climatology, meteorology, atmosphere
  • Oceans
Begin date
1996-10-01
End date
2023-07-31
N
S
E
W
thumbnail


Unique resource identifier
EPSG:3338
Number of dimensions
3
Dimension name
Time
Dimension size
0
Resolution
1  Day
Dimension name
Row
Dimension name
Column
Cell geometry
Area
Distribution format
  • GeoTIFF ( 1.0 )

OnLine resource
Chukchi Sea Seaward Landfast Ice Edge (SLIE) Extent Summarized by Month and 9-year Periods ( WWW:LINK-1.0-http--link )

URL to web-accessible folder containing downloads for this data set

OnLine resource
Mahoney AR, Bieniek P, Danielson S, Einhorn AH, Hedstrom KS, Jones JM, Klenz, T. (University of Alaska, Fairbanks, AK). 2024. Landfast ice climatology within the Arctic OCS. Anchorage (AK): U.S. Department of the Interior, Bureau of Ocean Energy Management. 121 p. Report No.: OCS Study BOEM 2024-034 ( WWW:LINK-1.0-http--link )
OnLine resource
Mahoney, A. R., H. Eicken, A. G. Gaylord, and R. Gens (2014), Landfast sea ice extent in the Chukchi and Beaufort Seas: The annual cycle and decadal variability, Cold Reg. Sci. Tech., 103(0), 41-56, doi: ( WWW:LINK-1.0-http--link )
Hierarchy level
Dataset
File identifier
0084b2b8-64ab-48bd-aacd-9fca5c0ea1f6 XML
Metadata language
English
Character set
UTF8
Parent identifier
Chukchi Sea Daily Landfast Sea Ice Extent October 1996 – July 2023 a6323019-0023-4e0d-98dc-a01b13bb7114
Date stamp
2025-02-05T16:00:22
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0
Point of contact
  Scenarios Network for Alaska and Arctic Planning
 
 

Overviews

overview

Spatial extent

N
S
E
W
thumbnail


Keywords

observed sea ice

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Associated resources

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