| DOI: | 10.1002/2013GL058773
|
| 论文题名: | Strong chemistry-climate feedbacks in the Pliocene |
| 作者: | Unger N.; Yue X.
|
| 刊名: | Geophysical Research Letters
|
| ISSN: | 0094-10491
|
| EISSN: | 1944-10222
|
| 出版年: | 2014
|
| 卷: | 41, 期:2 | | 起始页码: | 527
|
| 结束页码: | 533
|
| 语种: | 英语
|
| 英文关键词: | biogenic aerosol
; black carbon
; ozone
; paleoaerosol
; paleochemistry
; radiative forcing
|
| Scopus关键词: | Atmospheric chemistry
; Atmospheric radiation
; Carbon dioxide
; Geochemistry
; Global warming
; Ozone
; Vegetation
; Biogenic aerosols
; Black carbon
; paleoaerosol
; Paleochemistry
; Radiative forcings
; Aerosols
; albedo
; atmospheric chemistry
; biome
; climate feedback
; cooling
; global climate
; paleoclimate
; Pliocene
; savanna
; timescale
|
| 英文摘要: | The Pliocene epoch was the last sustained interval when global climate was significantly warmer than today but has been difficult to explain fully based on the external forcings from atmospheric carbon dioxide and surface albedo. Here we use an Earth system model to simulate terrestrial ecosystem emissions and atmospheric chemical composition in the mid-Pliocene (about 3 million years ago) and the preindustrial (∼1750s). Tropospheric ozone and aerosol precursors from vegetation and wildfire are ∼50% and ∼100% higher in the mid-Pliocene due to the spread of the tropical savanna and deciduous biomes. The chemistry-climate feedbacks contribute a net global warming that is +30-250% of the carbon dioxide effect and a net aerosol global cooling that masks 15-100% of the carbon dioxide effect. These large vegetation-mediated ozone and aerosol feedbacks operate on centennial to millennial timescales in the climate system and have not previously been included in paleoclimate sensitivity assessments. ©2013. The Authors. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84892457197&doi=10.1002%2f2013GL058773&partnerID=40&md5=6b00d366b3fcbc0de454f47a6612b73b
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7755
|
| Appears in Collections: | 气候减缓与适应
|
|
There are no files associated with this item.
|
|
作者单位: | School of Forestry and Environmental Studies, Yale University, New Haven, CT, United States
|
| Recommended Citation: | |
Unger N.,Yue X.. Strong chemistry-climate feedbacks in the Pliocene[J]. Geophysical Research Letters,2014-01-01,41(2).
|
|
|