(Table 1) Mean temperatures in january and july, and total annual snowfall at Great Bear Lake and Great Slave Lake, Canada
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| Autores principales: | , , , , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
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PANGAEA
2010
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| _version_ | 1867170961076256768 |
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| author | Kang, Kyung-Kuk Duguay, Claude R Howell, Stephen E L Derksen, Chris Kelly, Richard E J |
| author_facet | Kang, Kyung-Kuk Duguay, Claude R Howell, Stephen E L Derksen, Chris Kelly, Richard E J |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The sensitivity of brightness temperature (T(B)) at 6.9, 10.7, and 18.7 GHz from Advanced Microwave Scanning Radiometer-Earth Observing System (AMSR-E) observations is investigated over five winter seasons (2002-2007) on Great Bear Lake and Great Slave Lake, Northwest Territories, Canada. The T(B) measurements are compared to ice thicknesses obtained with a previously validated thermodynamic lake ice model. Lake ice thickness is found to explain much of the increase of T(B) at 10.7 and 18.7 GHz. T(B) acquired at 18.7 GHz (V-pol) and 10.7 GHz (H-pol) shows the strongest relation with simulated lake ice thickness over the period of study (R**2 > 0.90). A comparison of the seasonal evolution of T(B) for a cold winter (2003-2004) and a warm winter (2005-2006) reveals that the relationship between T(B) and ice growth is stronger in the cold winter (2003-2004). Overall, this letter shows the high sensitivity of T(B) to ice growth and, thus, the potential of AMSR-E mid-frequency channels to estimate ice thickness on large northern lakes. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_811808 |
| institution | PANGAEA |
| language | en |
| publishDate | 2010 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1) Mean temperatures in january and july, and total annual snowfall at Great Bear Lake and Great Slave Lake, Canada Kang, Kyung-Kuk Duguay, Claude R Howell, Stephen E L Derksen, Chris Kelly, Richard E J Accumulation of snow; Area/locality; DATE/TIME; Deline_MS; Event label; Hay_River_MS; International Polar Year (2007-2008); IPY; Latitude of event; Longitude of event; Northwest Territories, Canada; Temperature, coldest month; Temperature, warmest month; Weather station/meteorological observation; WST; Yellowknife_MS The sensitivity of brightness temperature (T(B)) at 6.9, 10.7, and 18.7 GHz from Advanced Microwave Scanning Radiometer-Earth Observing System (AMSR-E) observations is investigated over five winter seasons (2002-2007) on Great Bear Lake and Great Slave Lake, Northwest Territories, Canada. The T(B) measurements are compared to ice thicknesses obtained with a previously validated thermodynamic lake ice model. Lake ice thickness is found to explain much of the increase of T(B) at 10.7 and 18.7 GHz. T(B) acquired at 18.7 GHz (V-pol) and 10.7 GHz (H-pol) shows the strongest relation with simulated lake ice thickness over the period of study (R**2 > 0.90). A comparison of the seasonal evolution of T(B) for a cold winter (2003-2004) and a warm winter (2005-2006) reveals that the relationship between T(B) and ice growth is stronger in the cold winter (2003-2004). Overall, this letter shows the high sensitivity of T(B) to ice growth and, thus, the potential of AMSR-E mid-frequency channels to estimate ice thickness on large northern lakes. |
| title | (Table 1) Mean temperatures in january and july, and total annual snowfall at Great Bear Lake and Great Slave Lake, Canada |
| topic | Accumulation of snow; Area/locality; DATE/TIME; Deline_MS; Event label; Hay_River_MS; International Polar Year (2007-2008); IPY; Latitude of event; Longitude of event; Northwest Territories, Canada; Temperature, coldest month; Temperature, warmest month; Weather station/meteorological observation; WST; Yellowknife_MS |
| url | https://doi.org/10.1594/PANGAEA.811808 |