The competition between anthropogenic aerosol and greenhouse gas climate forcing is revealed by North Pacific water-mass changes

被引：2

作者：

Shi, Jia-Rui ^{[1
]}

Wijffels, Susan E. ^{[1
]}

Kwon, Young-Oh ^{[1
]}

Talley, Lynne D. ^{[2
]}

Gille, Sarah T. ^{[2
]}

机构：

[1] Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA

[2] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA USA

来源：

SCIENCE ADVANCES | 2023年 / 9卷 / 38期

基金：

美国国家科学基金会;

关键词：

SPATIAL-PATTERNS; OCEAN SALINITIES; TEMPERATURE; CYCLE; INTENSIFICATION; VENTILATION; RESPONSES; SHALLOW; SHIFT;

D O I：

10.1126/sciadv.adh7746

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Modeled water-mass changes in the North Pacific thermocline, both in the subsurface and at the surface, reveal the impact of the competition between anthropogenic aerosols (AAs) and greenhouse gases (GHGs) over the past 6 decades. The AA effect overwhelms the GHG effect during 1950-1985 in driving salinity changes on density surfaces, while after 1985 the GHG effect dominates. These subsurface water-mass changes are traced back to changes at the surface, of which similar to 70% stems from the migration of density surface outcrops, equatorward due to regional cooling by AAs and subsequent poleward due to warming by GHGs. Ocean subduction connects these surface outcrop changes to the main thermocline. Both observations and models reveal this transition in climate forcing around 1985 and highlight the important role of AA climate forcing on our oceans' water masses.

引用

页数：9