Song, Zhaoyang; Latif, Mojib; Park, Wonsun (2017): Simulated mean climate response to expanded Greenland Ice Sheet in the Kiel Climate Model [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.877918, Supplement to: Song, Z et al. (2017): Expanding Greenland Ice Sheet Enhances Sensitivity of Plio-Pleistocene Climate to Obliquity Forcing in the Kiel Climate Model. Geophysical Research Letters, https://doi.org/10.1002/2017GL074835
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Abstract:
Proxy data suggest that the Plio-Pleistocene transition from ~3.2 - 3.0 to 2.5 Ma featured the onset of Northern Hemisphere glaciation and enhanced climate variability on obliquity timescale. Here, we investigate the influence of the expanding Greenland ice sheet (GrIS) on the mean climate and obliquity-related variability. Special attention is given to the Atlantic Meridional Overturning Circulation (AMOC). A series of climate model simulations suggest that the expanding GrIS weakens the AMOC by ~1 Sv, which is mainly due to reduced heat loss of the Greenland-Iceland-Norwegian Sea. Moreover, the expanded GrIS amplifies the Hadley circulation response to obliquity forcing. This drives enhanced obliquity-forced variations in freshwater export from the tropical Atlantic and in turn variations of the AMOC that increase by about a factor. The stronger AMOC response to obliquity forcing in turn drives a stronger global-mean near-surface temperature response. We conclude that the AMOC response to obliquity forcing is important to understand the enhanced climate variability on obliquity timescale during the Plio-Pleistocene transition.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | File content | Content | Song, Zhaoyang | |||
| 2 | File name | File name | Song, Zhaoyang | |||
| 3 | File format | File format | Song, Zhaoyang | |||
| 4 | File size | File size | kByte | Song, Zhaoyang | ||
| 5 | Uniform resource locator/link to model result file | URL model | Song, Zhaoyang |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
50 data points
Data
| 1 Content | 2 File name | 3 File format | 4 File size [kByte] | 5 URL model |
|---|---|---|---|---|
| 600-year monthly mean Modern and Plio response of the Atlantic Meridional Overturning Circulation (unit: Sv; 1 Sv = 10^6 m^3/s) to Obliquity Forcing (low obliquity minus high obliquity) | KCM_Response_to_Obliquity_AMOC | NetCDF | 18.059 | KCM_Response_to_Obliquity_AMOC.nc |
| 600-year monthly mean Modern and Plio response of atmospheric moisture transport (integated from the surface to 200 hPa; unit: kg/m/s) to Obliquity Forcing (low obliquity minus high obliquity). | KCM_Response_to_Obliquity_AMT | NetCDF | 9.289 | KCM_Response_to_Obliquity_AMT.nc |
| 600-year monthly mean Modern and Plio response of net freshwater flux (precipitation - evaporation + runoff; unit: mm/day) to Obliquity Forcing (low obliquity minus high obliquity) | KCM_Response_to_Obliquity_PER | NetCDF | 9.789 | KCM_Response_to_Obliquity_PER.nc |
| 600-year DJF (December-January-February) mean 10 m wind vectors (zonal and meridional wind vectors) and wind speed (unit: m/s) for Modern, Plio and their difference (Modern minus Plio) | Modern_Plio_10m_Wind_DJF_Fig2cd | NetCDF | 39.512 | Modern_Plio_10m_Wind_DJF_Fig2cd.nc |
| 600-year annual mean barotropic streamfunction of the Atlantic meridional overturning circulation (unit: Sv; 1Sv = 10^6 m^3/s) for Modern, Plio and their difference (Modern minus Plio) | Modern_Plio_AMOC_Streamfunction_Fig2f | NetCDF | 35.277 | Modern_Plio_AMOC_Streamfunction_Fig2f.nc |
| 600-year DJF (December-January-February) mean mixed layer depth (unit: m) for Modern, Plio and their difference (Modern minus Plio) | Modern_Plio_Mixed_Layer_Depth_DJF_Fig2e | NetCDF | 126.949 | Modern_Plio_Mixed_Layer_Depth_DJF_Fig2e.nc |
| 600-year annual mean precipitation (unit: mm/day) for Modern, Plio and their difference (Modern minus Plio) | Modern_Plio_Precip_Annual_Fig2b | NetCDF | 18.137 | Modern_Plio_Precip_Annual_Fig2b.nc |
| 600-year DJF (December-January-February) mean net surface heat flux (solar radiation + longwave radiation + surface latent heat flux + surface sensible heat flux; unit: W/m^2) for Modern, Plio and their difference (Modern minus Plio) | Modern_Plio_Qnet_DJF_Fig2cd | NetCDF | 18.164 | Modern_Plio_Qnet_DJF_Fig2cd.nc |
| 600-year annual mean sea surface temperature (SST; unit: degree C) for Modern, Plio and their difference (Modern minus Plio) | Modern_Plio_SST_Annual_Fig2a | NetCDF | 18.137 | Modern_Plio_SST_Annual_Fig2a.nc |
| 600-year annual mean 2 m air temperature (unit: K) for Modern, Plio and their difference (Modern minus Plio) | Modern_Plio_T2m_Annual_Fig2a | NetCDF | 48.875 | Modern_Plio_T2m_Annual_Fig2a.nc |