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Summary
Data consist of ice observations from U.S. Coast Guard vessels operating on the
Great Lakes, and from Coast Guard shore stations reported via teletype messages
and ice logging forms. Observations include ice thickness and concentration,
weather conditions, and ice breaking activity. Data from 1961/1962 through
1966/1967 have been ... processed to a standard format and sorted by year and
stations, and are available via FTP as ASCII files, one for each of the five
lakes. These data were provided to NSIDC by the NOAA Great Lakes Environmental
Research Laboratory (GLERL), along with documentation. The documentation, Great
Lakes Environmental Research Laboratory Great Lakes Surface Ice Reports,
1961-1966, is included here. Data from 1970/1971 through 1993/1994 are
available on microfilm. The original ice reporting forms for these years were
filed as part of the ice operations files of the Ninth District U.S. Coast
Guard Ice Navigation Center, Cleveland, OH. Data from 1994/1995 through
2003/2004 are available via FTP in a single .tar file for each ice season.

Note that no editing or quality control has been performed on this data set.
Microfilmed records are difficult to use, as they are sorted by date and time
only, and contain extraneous information. The electronic data from 1994/1995
forward are raw teletype reports. These are not in a consistent format, and
also contain extraneous information. NSIDC obtained these data from a NOAA
National Weather Service public FTP server. The National Weather Service
obtained the data from the United States Coast Guard Headquarters. NSIDC was
unable to locate a responsible party within NOAA who could provide NSIDC with a
new source for the data. Therefore, the records end in 2004. Users may wish to
contact the U.S. Coast Guard for information on obtaining the individual ship
reports.

Related URL

Link: GET DATA Description: ftp access to data Link: VIEW RELATED INFORMATION Description: Access to data and documentation

Geographic Coverage Spatial coordinates   

N: 49.0

S: 41.0

E: -76.0

W: -93.0

Data Set Citation

Dataset Creator: U.S. Coast Guard Dataset Title: Great Lakes Surface Ice Reports from U.S. Coast Guard Dataset Release Place: Boulder, CO U.S.A. Dataset Publisher: National Snow and Ice Data Center (NSIDC) Online Resource: http://nsidc.org/data/G00805.html

Temporal Coverage

Start Date: 1961-11-10 Stop Date: 2004-12-31

Location Keywords

CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > GREAT LAKES > Detroit River CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA CONTINENT > NORTH AMERICA > USA

Science Keywords

ATMOSPHERE > ATMOSPHERIC TEMPERATURE > MAXIMUM/MINIMUM TEMPERATURE TERRESTRIAL HYDROSPHERE > SNOW/ICE > ICE DEPTH/THICKNESS TERRESTRIAL HYDROSPHERE > SNOW/ICE > ICE EXTENT TERRESTRIAL HYDROSPHERE > SNOW/ICE > LAKE ICE CRYOSPHERE > SNOW/ICE > ICE DEPTH/THICKNESS CRYOSPHERE > SNOW/ICE > ICE EXTENT CRYOSPHERE > SNOW/ICE > LAKE ICE

ISO Topic Category

CLIMATOLOGY/METEOROLOGY/ATMOSPHERE INLAND WATERS GEOSCIENTIFIC INFORMATION

Platform

GROUND STATIONS SHIPS

Instrument

VISUAL OBSERVATIONS

Ancillary Keywords

Climatology Seasonal Ice Freshwater Ice Ice Navigation Lake Ice Ice Cover Lakes

Data Set Progress

COMPLETE

Originating Center

NSIDC

Data Center

National Oceanic and Atmospheric Administration at the National Snow and Ice Data Center Data Center URL: http://nsidc.org/noaa/ Dataset ID: G00805 Data Center Personnel Name: NSIDC NOAA USER SERVICES Phone: +1 (303) 492-6199 Fax: +1 (303) 492-2468 Email: nsidc at nsidc.org Contact Address: National Snow and Ice Data Center CIRES, 449 UCB University of Colorado City: Boulder Province or State: CO Postal Code: 80309-0449 Country: USA National Snow and Ice Data Center Data Center URL: http://nsidc.org Data Center Personnel Name: NSIDC USER SERVICES Phone: +1 (303) 492-6199 Fax: +1 (303) 492-2468 Email: nsidc at nsidc.org Contact Address: National Snow and Ice Data Center CIRES, 449 UCB University of Colorado City: Boulder Province or State: CO Postal Code: 80309-0449 Country: USA

Distribution

Distribution Media: 16mm microfilm and ftp. Fees: none

Personnel

NSIDC USER SERVICES Role: TECHNICAL CONTACT Phone: +1 (303) 492-6199 Fax: +1 (303) 492-2468 Email: nsidc at nsidc.org Contact Address: National Snow and Ice Data Center CIRES, 449 UCB University of Colorado City: Boulder Province or State: CO Postal Code: 80309-0449 Country: USA

Publications/References
Assel, R. A. Great Lakes weekly ice cover statistics. NOAA Technical Memorandum
GLERL-133. NOAA, Great Lakes Environmental Research Laboratory, Ann Arbor, MI,
27 pp. (2005). ftp://ftp.glerl.noaa.gov/publications/tech_reports/glerl-133/

Assel, R. A. Computerized National Weather Service Great Lakes ice reports for
winter ... seasons 1899-1970. NOAA Technical Memorandum GLERL-130. NOAA, Great
Lakes Environmental Research Laboratory, Ann Arbor, MI, 31 pp. (2004).
ftp://ftp.glerl.noaa.gov/publications/tech_reports/glerl-130/

Assel, R. A. A Laurentian Great Lakes ice cover climatology. Proceedings of the
61st Annual Meeting of the Eastern Snow Conference, Portland, Maine, June 9-11,
2004. 2 pp.(2004). http://www.glerl.noaa.gov/pubs/fulltext/2004/20040027.pdf

Assel, R. A., F. H. Quinn, and C. E. Sellinger. Hydro-climatic factors of the
recent drop in Laurentian Great Lakes water levels. Bulletin of the American
Meteorological Society 85(8):1143-1151 (2004).
http://www.glerl.noaa.gov/pubs/fulltext/2004/20040017.pdf

Assel, R. A., S. Drobot, and T. E. Croley, II. Improving 30-day Great Lakes ice
cover outlooks. Journal of Hydrometeorology 5(4):713-717 (2004).
http://www.glerl.noaa.gov/pubs/fulltext/2004/20040016.pdf

Assel, R. A., S. Drobot, and T. E. CROLEY, II. Improving monthly Great Lakes
ice cover outlooks. NOAA Technical Memorandum GLERL-129. NOAA, Great Lakes
Environmental Research Laboratory, Ann Arbor, MI, 22 pp. (2004).
ftp://ftp.glerl.noaa.gov/publications/tech_reports/glerl-129/

Assel, R. A. Lake Erie ice cover climatology -- basin averaged ice cover:
winters 1898-2002. NOAA Technical Memorandum GLERL-128. NOAA, Great Lakes
Environmental Research Laboratory, Ann Arbor, MI, 15 pp. (2004).
ftp://ftp.glerl.noaa.gov/publications/tech_reports/glerl-128/

US Coast Guard Ninth District Operation Plan 1 FY Annex X Great Lakes
Hydrometeorological Station Directory, NOAA data report ERL GLERL-22, Feb. 1983
US Coast Pilot #6; Great Lakes, April 82, US Department of Commerce, NOAA

Creation and Review Dates

Last DIF Revision Date: 2009-01-08

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