Antarctic spring ice-edge blooms observed from space by ICESat-2

Antarctic Sea-Ice Thickness Retrieval from ICESat: Inter-Comparison of Different Approaches

Accurate circum-Antarctic sea-ice thickness is urgently required to better understand the different sea-ice cover evolution in both polar regions. Satellite radar and laser altimetry are currently the most promising tools for sea-ice thickness retrieval. We present qualitative inter-comparisons of winter and spring circum-Antarctic sea-ice thickness computed with different approaches from Ice C...

Ultraviolet levels under sea ice during the antarctic spring.

Regulation of Algal Blooms in Antarctic Shelf Waters by the Release of Iron From Melting Sea Ice

During summer 1995-96, we measured iron in the water column and conducted iron-enrichment bottle-incubation experiments at a station in the central Ross Sea (76ø30'S, 170ø40'W), first, in the presence of melting sea ice, and 17 days later, in ice-free conditions. We observed a striking temporal change in mixed-layer dissolved iron concentrations at this station, from 0.72-2.3 nM with sea ice pr...

Automated Antarctic Ice Edge Detection Tjsing Nsca'i' Data

Polar sea ice plays an important role in the global climate and other geophysical processes. Although spaccborne scatterometers such as NSC.AT have low inherent spatial resolution, resolution enhancement techniques can be utilized to make NSCAT data useful for monitoring sea ice extent in the Antarctic. Dual polarization radar measurements are A and 6: values are used in a linear discrimination...

Satellite Remote Sensing of Snow Depth on Antarctic Sea Ice: An Inter-Comparison of Two Empirical Approaches

Snow on Antarctic sea ice plays a key role for sea ice physical processes and complicates retrieval of sea ice thickness using altimetry. Current methods of snow depth retrieval are based on satellite microwave radiometry, which perform best for dry, homogeneous snow packs on level sea ice. We introduce an alternative approach based on in-situ measurements of total (sea ice plus snow) freeboard...