These charts, created by the Danish Meteorological Institute (DMI), provide observed and inferred sea ice extent for each summer month from 1893 to 1956. From 1893 to 1956, the Danish Meteorological Institute (DMI) created charts of observed and inferred sea ice extent for each summer month. These charts are based on compiled observations of ice conditions reported by a variable network of national organizations, shore-based observers, scientific expeditions, and ships as detailed in each report; in cases where no observations were available, the lead mapmakers extrapolated further ice cover using their knowledge of ice movement. Except for where direct observations are indicated, caution is advised in using the charts’ ice edge because there is no way to quantify the assumptions used in extrapolating ice edge or the error involved in this method. See the note on reliability for further discussion of potential error. The charts were scanned at the Icelandic Meteorological Office (IMO) and are being made available here as a service and in cooperation with DMI and other contributors. In all, there are 266 image files containing 291 images.
Science Keywords: |
|
||
Spatial Extent: | Bounding Rectangle: N: 90.0 S: 55.0 E: 180.0 W: -180.0 |
Data Format(s): | n/a |
Temporal Extent: | Platform(s): | GROUND-BASED OBSERVATIONS, SHIPS | |
Data Center(s): | NSIDC | Instrument(s): | VISUAL OBSERVATIONS |
Version: | 1 |
10.7265/N56D5QXC
NA
Not Applicable
Complete
Coverage Type | Zone Identifier | Geometry | Granule Representation |
---|---|---|---|
HORIZONTAL | CARTESIAN | GEODETIC |
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder,
CO
80309-0449
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder,
CO
80309-0449
CIRES, 449 UCB
University of Colorado
Boulder,
CO
80309-0449
This contact does not have any addresses listed.
This contact does not have any contact mechanisms listed.
Boulder, CO
Lyngbyvej 100 DK-2100
Copenhagen E,
This contact does not have any contact mechanisms listed.
Lyngbyvej 100 DK-2100
Copenhagen E,
This contact does not have any contact mechanisms listed.
449 UCB
Boulder,
CO
80309-0449
1 303 492 6199
Boulder, Colorado
This contact does not have any contact mechanisms listed.
There is no archive and distribution information for this collection.