DOI: 10.1029/2018JD028676
Scopus记录号: 2-s2.0-85052909131
论文题名: Arctic Sea Ice Melt Onset Timing From Passive Microwave-Based and Surface Air Temperature-Based Methods
作者: Bliss A.C. ; Anderson M.R.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 17 起始页码: 9063
结束页码: 9080
语种: 英语
英文关键词: air temperatures
; AIRS
; Arctic
; melt
; passive microwave
; sea ice
英文摘要: Melt onset (MO) on Arctic sea ice has been monitored using satellite-based passive microwave (PMW) observations since 1979. In this work, surface air temperatures from the International Arctic Buoy Programme/Polar Exchange at the Sea Surface and NASA's Atmospheric Infrared Sounder are used to derive MO date estimates using three threshold methods which are then compared with a record of PMW-based MO dates. Results from the PMW data indicate a shift toward increasingly early MO timing, with significant trends as large as −9.45 days/decade in the E. Siberian Sea and −5.69 days/decade for the entire Arctic, consistent with other studies highlighting the overall decline of Arctic sea ice. Results indicate that the surface air temperature-based MO date estimates produced using a −1 °C threshold are ~11 days later than the PMW-based MO date estimates Arctic wide. A statistical comparison of the Polar Exchange at the Sea Surface and PMW-based MO dates indicate that despite the ~11-day bias, correlations between the MO date time series are generally good (≥0.6) for most of the Arctic Ocean while the Atmospheric Infrared Sounder and PMW-based MO dates are generally better at capturing the statistically similar long-term trends in MO dates for the Arctic and several Arctic subregions. Application of these results can contribute to the development of new methods to monitor the sea ice melting state. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113182
Appears in Collections: 气候减缓与适应
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作者单位: Cryospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States; Department of Earth and Atmospheric Sciences, University of Nebraska-Lincoln, Lincoln, NE, United States
Recommended Citation:
Bliss A.C.,Anderson M.R.. Arctic Sea Ice Melt Onset Timing From Passive Microwave-Based and Surface Air Temperature-Based Methods[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(17)