Multiyear accumulation and temperature history near the North Greenland Ice Core Project site, north central Greenland ...
This paper presents a comparison of two independent methods of estimating subseasonal accumulation across the interior of Greenland. These methods, high-resolution snow pit studies and atmospheric modeling, have differing spatial and temporal resolution, but both can estimate net accumulation for su...
| Main Authors: | , , , |
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| Format: | Article in Journal/Newspaper |
| Language: | unknown |
| Published: |
AGU
2001
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.13016/m21c1q-p8af https://mdsoar.org/handle/11603/24301 |
| Summary: | This paper presents a comparison of two independent methods of estimating subseasonal accumulation across the interior of Greenland. These methods, high-resolution snow pit studies and atmospheric modeling, have differing spatial and temporal resolution, but both can estimate net accumulation for subseasonal and shorter periods. The snow pit approach is based on a documented relationship between high-resolution snow pit profiles of oxygen stable isotope ratio (????¹⁸O) and multiyear Special Sensor Microwave/Imager (SSM/I) 37-GHz brightness temperature records. Comparison of SSM/I data to profiles obtained during the 1995 Alfred Wegener Institut North Greenland Traverse field season shows that ????¹⁸O data from snow in north central Greenland are a reliable, high-resolution temperature proxy. This enables determination of accumulation amount, rate, and timing from approximately July 1991 through June 1995 across this 220- km-long transect of the ice sheet. Precipitation estimates derived from early modeling based ... |
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