| DOI: | 10.1007/s00382-016-3280-7
|
| Scopus记录号: | 2-s2.0-84982903346
|
| 论文题名: | Effective radiative forcing from historical land use change |
| 作者: | Andrews T.; Betts R.A.; Booth B.B.B.; Jones C.D.; Jones G.S.
|
| 刊名: | Climate Dynamics
|
| ISSN: | 9307575
|
| 出版年: | 2017
|
| 卷: | 48, 期:2017-11-12 | | 起始页码: | 3489
|
| 结束页码: | 3505
|
| 语种: | 英语
|
| 英文关键词: | Climate model
; Earth system
; Global temperature change
; Land-use
; Radiative forcing
|
| 英文摘要: | The effective radiative forcing (ERF) from the biogeophysical effects of historical land use change is quantified using the atmospheric component of the Met Office Hadley Centre Earth System model HadGEM2-ES. The global ERF at 2005 relative to 1860 (1700) is −0.4 (−0.5) Wm−2, making it the fourth most important anthropogenic driver of climate change over the historical period (1860–2005) in this model and larger than most other published values. The land use ERF is found to be dominated by increases in the land surface albedo, particularly in North America and Eurasia, and occurs most strongly in the northern hemisphere winter and spring when the effect of unmasking underlying snow, as well as increasing the amount of snow, is at its largest. Increased bare soil fraction enhances the seasonal cycle of atmospheric dust and further enhances the ERF. Clouds are shown to substantially mask the radiative effect of changes in the underlying surface albedo. Coupled atmosphere–ocean simulations forced only with time-varying historical land use change shows substantial global cooling (dT = −0.35 K by 2005) and the climate resistance (ERF/dT = 1.2 Wm−2 K−1) is consistent with the response of the model to increases in CO2 alone. The regional variation in land surface temperature change, in both fixed-SST and coupled atmosphere–ocean simulations, is found to be well correlated with the spatial pattern of the forced change in surface albedo. The forcing-response concept is found to work well for historical land use forcing—at least in our model and when the forcing is quantified by ERF. Our results suggest that land-use changes over the past century may represent a more important driver of historical climate change then previously recognised and an underappreciated source of uncertainty in global forcings and temperature trends over the historical period. © 2016, Crown Copyright as represented by the Met Office. |
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/53216
|
| Appears in Collections: | 过去全球变化的重建
|
|
There are no files associated with this item.
|
|
作者单位: | Met Office Hadley Centre, FitzRoy Road, Exeter, United Kingdom
|
| Recommended Citation: | |
Andrews T.,Betts R.A.,Booth B.B.B.,et al. Effective radiative forcing from historical land use change[J]. Climate Dynamics,2017-01-01,48(2017-11-12)
|
|
|