The melt anomaly of 2002 on the Greenland Ice Sheet from active and passive microwave satellite observations
The melt anomaly of 2002 on the Greenland Ice Sheet from active and passive microwave satellite observations
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DOI：
10.1029/2004gl020444
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发表时间：
2004-10
影响因子：
5.2
通讯作者：
Konrad Steffen;S. Nghiem;R. Huff;Gregory A. Neumann
中科院分区：
文献类型：
--
作者：
Konrad Steffen;S. Nghiem;R. Huff;Gregory A. Neumann
主动式和被动式微波卫星数据被用于绘制格陵兰冰盖的融雪范围和持续时间。被动微波（PM）数据显示，2002年的极端融化范围为690 000平方公里，而1979-2003年的平均融化范围为455 000平方公里。融化的时间序列的统计分析肯定了增加融化程度早在融化季节。1999年至2004年的QuikSCAT（QSCAT或AM）分析证实了2002年的极端融化情况。昆士兰州科学和技术援助方案的数据显示，2003年若干地区的融化季节长度显著增加。SSM/I和QSCAT数据表明，后者检测到融化更早，更敏感的表面融化。QSCAT检测熔化的早期阶段，SSM/I检测熔化的后期阶段。SSM/I XGPR熔融范围大致局限于经历2周或更长熔融时间的QSCAT熔融区域。
Active and passive microwave satellite data are used to map snowmelt extent and duration on the Greenland ice sheet. The passive microwave (PM) data reveal the extreme melt extent of 690,000 km2 in 2002 as compared with an average extent of 455,000 km2 from 1979–2003. A statistical analysis of the melt time series affirms an increased melt extent earlier in the melt season. The QuikSCAT (QSCAT or AM) analysis for 1999 to 2004 confirms the extreme melt situation in 2002. QSCAT data show a significant increase in melt season length over several areas in 2003. SSM/I and QSCAT melt data reveal that the later detects melt earlier and is more sensitive to surface melt. QSCAT detects an earlier stage of melt and SSM/I detects a later stage of melt. The SSM/I XGPR melt extent is approximately confined to the QSCAT melt areas experiencing 2 weeks or more of melting time.