期刊
MONTHLY WEATHER REVIEW
卷 144, 期 11, 页码 4279-4287出版社
AMER METEOROLOGICAL SOC
DOI: 10.1175/MWR-D-16-0234.1
关键词
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资金
- NASA's Operation IceBridge project science office through ESSIC [5266970 Task 727]
- NASA Grant [NNX11AF44G]
- NASA [NNX11AF44G, 147246] Funding Source: Federal RePORTER
Atmospheric data from the Atmospheric Infrared Sounder (AIRS) were used to study an extreme warm and humid air mass transported over the Barents-Kara Seas region by an Arctic cyclone at the end of December 2015. Temperature and humidity in the region was similar to 10 degrees C (>3 sigma above the 2003-14 mean) warmer and similar to 1.4 g kg(-1) (>4 sigma above the 2003-14 mean) wetter than normal during the peak of this event. This anomalous air mass resulted in a large and positive flux of energy into the surface via the residual of the surface energy balance (SEB), compared to the weakly negative SEB from the surface to the atmosphere expected for that time of year. The magnitude of the downwelling longwave radiation during the event was unprecedented compared to all other events detected by AIRS in December/January since 2003. An approximate budget scaling suggests that this anomalous SEB could have resulted in up to 10 cm of ice melt. Thinning of the ice pack in the region was supported by remotely sensed and modeled estimates of ice thickness change. Understanding the impact of this anomalous air mass on a thinner, weakened sea ice state is imperative for understanding future sea ice-atmosphere interactions in a warming Arctic.
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