Inequal Responses of Drylands to Radiative Forcing Geoengineering Methods

Park, Chang-Eui1,2; Jeong, Su-Jong2; Fan, Yuanchao3,4; Tjiputra, Jerry3,4; Muri, Helene5; Zheng, Chunmiao1

2019-12-04

10.1029/2019GL084210

GEOPHYSICAL RESEARCH LETTERS   影响因子和分区

0094-8276

1944-8007

Climate geoengineering has the potential to reduce global warming. However, the nonlinear responses of Earth's large-scale circulation to climate geoengineering can exacerbate regional climate change, with potential inequality risks. We show noticeable inequality in the responses of drylands when three radiative forcing geoengineering (RFG) methodologies-cirrus cloud thinning (CCT), marine sky brightening (MSB), and stratospheric aerosol injection (SAI)-individually reduce the radiative forcing of the representative concentration pathway 8.5 scenario using a set of the Norwegian Earth system model (NorESM1-ME) experiments. In North America, CCT and SAI alleviate drylands expansion, whereas drylands expand further under MSB. CCT induces significantly wetter conditions over the western Sahel. Wetting over Australia is enhanced and prevented by MSB and SAI, respectively. Our results suggest spatially inequal distributions of benefits and harms of individual RFGs on the projected distribution of drylands, which should be considered before any real-world application of such RFGs.

climate geoengineering drylands climate change NorESM1-ME future projection

SCI ; EI

英语

NI论文

第一 ; 通讯

RCN[229760/E10] ; RCN[261862/E10] ; RCN[237917]

Geology

Geosciences, Multidisciplinary

WOS:000500515300001

AMER GEOPHYSICAL UNION

20195007815806

Climate change ; Clouds ; Global warming

Meteorology:443 ; Atmospheric Properties:443.1

GEOSCIENCES

Web of Science

1.Southern Univ Sci & Technol SUSTech, Sch Environm Sci & Engn, Shenzhen, Guangdong, Peoples R China
2.Seoul Natl Univ, Grad Sch Environm Studies, Dept Environm Planning, Seoul, South Korea
3.NORCE Norwegian Res Ctr, Bergen, Norway
4.Bjerknes Ctr Climate Res, Bergen, Norway
5.Norwegian Univ Sci & Technol, Dept Energy & Proc Engn, Ind Ecol Programme, Trondheim, Norway

Park, Chang-Eui,Jeong, Su-Jong,Fan, Yuanchao,et al. Inequal Responses of Drylands to Radiative Forcing Geoengineering Methods[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(23):14011-14020.

Park, Chang-Eui,Jeong, Su-Jong,Fan, Yuanchao,Tjiputra, Jerry,Muri, Helene,&Zheng, Chunmiao.(2019).Inequal Responses of Drylands to Radiative Forcing Geoengineering Methods.GEOPHYSICAL RESEARCH LETTERS,46(23),14011-14020.

Park, Chang-Eui,et al."Inequal Responses of Drylands to Radiative Forcing Geoengineering Methods".GEOPHYSICAL RESEARCH LETTERS 46.23(2019):14011-14020.