Modelling equable climates of the Late Cretaceous: Can new boundary conditions resolve data-model discrepancies?
Modelling equable climates of the Late Cretaceous: Can new boundary conditions resolve data-model discrepancies?
复制标题
模拟晚白垩世的均匀气候:新的边界条件能否解决数据模型的差异?
DOI:
10.1016/j.palaeo.2013.08.009
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
Hunter S
中科院分区:
文献类型:
--
作者:
Hunter S
Late Cretaceous (Maastrichtian) climate and vegetation is modelled using the HadCM3L fully-coupled atmosphere–ocean model and the TRIFFID dynamic vegetation model. We investigate data–model inconsistencies in the high-latitudes and continental interiors by exploring the sensitivity of modelled terrestrial climate to vegetation treatment, changing atmosphericpCO2levels and the representation of Arctic seaway connections. We expand on previous work by using millennial-scale GCM runs with dynamic vegetation to allow for improved representations of ocean heat transport and terrestrial boundary conditions.Incorporating realistic vegetation drives high-latitude warming particularly during summer through reductions in surface albedo and induced atmosphere–ocean feedbacks. Resulting regional warming can exceed 10 °C. AspCO2rises some regions cool as deciduous to evergreen change increases albedo. Incorporating enhanced Arctic connectivity, reconfigured ocean heat transport drives widespread terrestrial warming of ~ 3 °C and > 5 °C regionally. Applying sensitivities in combination significant palaeobotanical data–model inconsistencies in the northern high-latitudes and continental interiors remain. Further work is required to resolve climate and vegetation model deficiencies and improve the interpretation and geographic distribution of quantitative climate-sensitive geological proxies.
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影响因子:
2.7
作者:
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通讯作者:
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DOI:
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发表时间:
2005-06
期刊:
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通讯作者:
C. Roberts;A. Legrande;A. Tripati
DOI:
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发表时间:
1996
期刊:
影响因子:
--
作者:
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通讯作者:
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