Observed hemispheric asymmetry in global sea ice changes

Science

Volumn 278, Issue 5340, 1997, Pages 1104-1106

  Cavalieri, D J ^a   Gloersen, P ^a   Parkinson, C L ^a   Comiso, J C ^a   Zwally, H J ^a  

^a NASA GODDARD SPACE FLIGHT CENTER   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

SEA WATER;

GLOBAL WARMING; HEMISPHERIC ASYMMETRY; ICE COVER; SEA ICE;

ARCTIC CLIMATE; ARTICLE; GREENHOUSE EFFECT; MICROWAVE RADIATION; PRIORITY JOURNAL; SIMULATION;

ANTARCTICA; ARCTIC OCEAN;

EID: 0030712376     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.278.5340.1104     Document Type: Article

References (30)

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10. Correction for ice extent and area differences from the various sensors during the overlap periods was critical to obtaining unbiased long-term trends. In Bjørgo et al. (7), a correction for SMMR-SSMI differences was mentioned but none for SSMI F8-F11 differences. Bjørgo et al. used a two-step procedure to match ice concentrations for the SMMR-SSMI correction. Our matching of algorithm coefficients was somewhat comparable to their procedure, but then we additionally matched ice extents and areas during the overlap periods.
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29. The confidence level was determined with a Student's t test in which the number of degrees of freedom is obtained by subtracting the number of calculated parameters from the number of windows used in the multiple window filtering.
30. The SSMI data sets were provided by the National Snow and Ice Data Center in Boulder, CO. We thank S. Fiegles, M. Martino, and J. Saleh for their efforts in reprocessing and correcting the SMMR and SSMI data sets and J. A. Maslanik and J. Stroeve for their help in checking the final sea ice concentrations. This work was supported by NASA's polar program.