Northern Hemisphere Sea ice extent/area
Time series of Northern Hemisphere Ice extent.
Description
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From the NSIDC website
"The Sea Ice Index provides a quick look at Arctic- and Antarctic-wide changes in sea ice. It is a source for consistent, up-to-date sea ice extent and concentration images, in PNG format, and data values, in ASCII text files, from November 1978 to the present. Sea Ice Index images also depict trends and anomalies in ice cover calculated using a 30-year reference period of 1981 through 2010.
The images and data are produced in a consistent way that makes the Index time-series appropriate for use when looking at long-term trends in sea ice cover. Both monthly and daily products are available. However, monthly products are better to use for long-term trend analysis because errors in the daily product tend to be averaged out in the monthly product and because day-to-day variations are often the result of short-term weather."
Temporal Coverage
- Monthly values: 1978/01 to present
- Update Status: Monthly
Data Notes
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Units: m**2 area
Get Data
Time-series List
Source, citation and related Information.
Related Time-series
Links
Original Source
- Data is from the NSIDC: Dataset G02135: Sea Ice Index, Version 3
Time-series source dataset(s)
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Sensors used in dataset are: SMMR, SSM/I, SSMIS. Please see the User Guide for more information.
Citation
- Cite as: Fetterer, F., K. Knowles, W. Meier, M. Savoie, and A. K. Windnagel. 2017, updated daily. Sea Ice Index, Version 3. [Indicate subset used]. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. doi: https://dx.doi.org/10.7265/N5K072F8. Accessed version at NOAA/PSL on [Date Accessed].
- Fetterer, F., K. Knowles, W. Meier, M. Savoie, and A. K. Windnagel. 2017, updated daily. Sea Ice Index, Version 3.