The Human Impacts Database
A collection of useful numbers for quantifying the impacts of the human presence on Earth.Southern Hemisphere sea ice extent
WaterCryosphereThis quantity comes from a time series measurement and the most recent value (1979-2021) is reported.
Value: |
1.1502 × 107 km2
see this value in other units
This is equivalent to... 1.1502 × 1013 m2 1.8451 × 107 km2 at yearly maximum cover (September) 1.8451 × 1013 m2 at yearly maximum cover (September) 2.826 × 106 km2 at yearly minimum cover (February) 2.826 × 1012 m2 at yearly minimum cover (February) |
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HuID: | 15616 | |
Relevant Year(s): | 1979-2021 | |
Summary: | This entry represents the average Southern Hemisphere sea ice extent in each year from 1979-2021. The entry gives three values, each representative of the most recent year: 1) The average yearly sea ice extent, 2) the average sea ice extent in the month of maximum average extent over the period 1979-2021 (September), and 3) the average sea ice extent in the month of minimum average extent over the period 1979-2021 (February). | |
Method: | The Sea Ice Index provides satellite data for sea ice cover described as sea ice extent (calculated by taking the integral sum of the areas within grid cells with > 15% ice concentration) and area (calculated by multiplying the percentage of sea ice in each grid cell with > 15% ice concentration by the area of the grid cell and taking the integral sum of these products) in the northern and southern hemispheres from 1979-2021. No uncertainty is given. | |
Source: | Fetterer, F., K. Knowles, W. N. Meier, M. Savoie, and A. K. Windnagel. 2017, updated daily. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. doi: https://doi.org/10.7265/N5K072F8. [2022-Feb-16]. Sea_Ice_Index_Monthly_Data_by_Year_G02135_v3.0.xlsx. (2017) | |
Dataset: |
This file gives the average Southern Hemisphere sea ice extent for each month and year from 1979-2019. (southern_hemisphere_extent.csv)
regional resolution
| Trend: |
Original Data License: | NSIDC Open Data Policy | |
Added By: | nsarai |