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Comparison of the Surface Conditions of the Inland Ice Sheet, Dronning Maud Land. Antarctica. Derived from Noaa AVHRR Data with Ground Observation

  • Yoshiyuki Fujii (a1), Takashi Yamanouchi (a1), Kazuya Suzuki (a2) and Shinya Tanaka (a3)

Abstract

The surface conditions of the inland ice sheet in east Dronning Maud Land, Antarctica, are derived from the NOAA-7 AVHRR data received at Syowa Station and then compared with the ground observations which were collected in November 1984 along a 243 km long traverse route at altitudes ranging from 2700 to 3400 m a.s.l. The variations in the AVHRR data are well related to the distribution of glazed surfaces. The areas with lower albedo, higher surface temperature, lower ratio of channel 2/channel 1, and lower T4-T5 coincide with the areas where a glazed surface has developed. This result is attributed to the fact that the glazed surface is composed of a multi-layered ice crust and that its radiative and thermal properties are closer to ice than to snow. The present study shows that the NOAA AVHRR data are useful for distinguishing bare ice, glazed surfaces, and snow surfaces of the Antarctic ice sheet.

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Copyright

References

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Dozier, J, Warren, S G 1982 Effect of viewing angle on the infrared brightness temperature of snow. Water Resources Research 18(5): 14241434
Dozier, J, Schneider, S R, McGinnis, D F Jr 1981 Effect of grain size and snowpack water equivalence on visible and near-infrared satellite observations of snow. Water Resources Research 17(4): 12131221
Fujii, Y, Kusunoki, K 1982 The role of sublimation and condensation in the formation of ice sheet surface at Mizuho Station, Antarctica. Journal of Geophysical Research 87(C6): 42934300
Mae, S, Yamanouchi, T, Wada, M 1981 The measurement of the surface temperature at Mizuho Station, East Antarctica. Memoirs of National institute of Polar Research. Special Issue 19; 4048
Warren, S G 1982 Optical properties of snow. Reviews of Geophysics and Space Physics 20(1): 6789
Watanabe, O 1978 Distribution of surface features of snow cover in Mizuho Plateau. Memoirs of National Institute of Polar Research. Special Issue 7: 4462

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