Skillful spring forecasts of September Arctic sea ice extent using passive microwave sea ice observations

Skillful spring forecasts of September Arctic sea ice extent using passive microwave sea ice observations
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利用被动微波海冰观测对九月北极海冰范围进行熟练的春季预报

DOI:
10.1002/2016ef000495
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发表时间:
2017
期刊:
Earth's Future
影响因子:
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通讯作者:
Petty A
Petty A
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作者:
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在这项研究中,我们利用海冰浓度(SIC)和融化开始(MO)的被动微波观测,展示了对九月份北极海冰去趋势范围的巧妙预测。我们将这些与使用复杂的融化池模型的数据产生的预测进行比较,发现与更高的技能值类似,其中预测技能是相对于线性趋势持久性计算的。 MO 预测显示 3 月至 5 月的技能水平最高,而 SIC 预测的技能水平在 6 月至 8 月最高,尤其是在评估近几年(自 2008 年以来)的预测时。早春的高 MO 预报技能似乎主要是由开放水域异常的存在和时间驱动的,而高 SIC 预报技能似乎是由开放水域和地表融化过程共同驱动的。去趋势异常的空间地图突出了不同预测的驱动因素,并使我们能够了解具有预测重要性的区域。正确捕捉海冰状态异常以及开放水域覆盖范围的变化似乎是巧妙预测夏季北极海冰的关键过程。
In this study, we demonstrate skillful spring forecasts of detrended September Arctic sea ice extent using passive microwave observations of sea ice concentration (SIC) and melt onset (MO). We compare these to forecasts produced using data from a sophisticated melt pond model, and find similar to higher skill values, where the forecast skill is calculated relative to linear trend persistence. The MO forecasts shows the highest skill in March–May, while the SIC forecasts produce the highest skill in June–August, especially when the forecasts are evaluated over recent years (since 2008). The high MO forecast skill in early spring appears to be driven primarily by the presence and timing of open water anomalies, while the high SIC forecast skill appears to be driven by both open water and surface melt processes. Spatial maps of detrended anomalies highlight the drivers of the different forecasts, and enable us to understand regions of predictive importance. Correctly capturing sea ice state anomalies, along with changes in open water coverage appear to be key processes in skillfully forecasting summer Arctic sea ice.
2015-2016年北极最暖冬季分析
DOI: 10.1002/2016gl071228
发表时间: 2016
影响因子: 5.2
作者:
R. Cullather;Y. Lim;L. Boisvert;L. Brucker;J. Lee;S. Nowicki
通讯作者: S. Nowicki
DOI: 10.1002/2016jc012089
发表时间: 2016-09
影响因子: 3.6
作者:
Steele, Michael;Dickinson, Suzanne
通讯作者: Dickinson, Suzanne