<

www.3522com

BODY>

您好,欢迎访问www.3522com官方网站!

ENGLISH| 北大主页
AGU期刊一周Research Spotlight
AGU发布最新Editor's Highlight和国外工作学习机会(Mar 6~Mar 12, 2020)
时间:2020年03月11日 14:00来源: 点击数:

The Overlooked Role of Sulfur Dioxide Emissions from Volcanoes

Volcanoes can warm as much as they cool. Prior simulations have neglected the important warming effects of sulfur dioxide emissions, making some results colder than they should be.

SOURCE: Journal of Geophysical Research: Atmospheres

This figure shows how different levels of volcanic emissions result in different shortwave (SW, blue), longwave (LW, orange), and total (SW+LW, green) daily mean net radiative forcings computed for different scalings (10x, 100x, 1000x Pinatubo) of sulfur dioxide volume mixing ratios. For the Toba case, which is approximately 100x Pinatubo, the SO2radiative effects are as important as that of sulfate and result in less extreme cooling. Credit:Osipov et al. [2020], Figure 7

Even though volcanic emissions are well known for their role in causing multi-month cooling effects at the top of the atmosphere and the surface, in some cases there is substantial warming from sulfur dioxide that can offset the cooling from sulfate particles.

Osipov et al. [2020] show the significant role of volcanic sulfur dioxide effects on chemistry, dynamics, and aerosol radiative forcing, using the Toba eruption simulation as an example. Such effects usually are not included in assessing the volcanic climate effects from large volcanic eruptions, and this study has made a compelling case for considering it in the future assessments. Specifically, the authors demonstrate the “soothing” greenhouse effect of sulfur dioxide on the cooling of sulfate aerosol. These offsets to sulfate cooling are particularly important to consider for simulating the impacts of future volcanic eruptions on climate.

Citation: Osipov, S., Stenchikov, G., Tsigaridis, K., LeGrande, A. N., & Bauer, S. E. [2020]. The role of the SO2radiative effect in sustaining the volcanic winter and soothing the Toba impact on climate.Journal of Geophysical Research: Atmospheres, 125, e2019JD031726.https://doi.org/10.1029/2019JD031726

—Lynn Russell, Editor,JGR: Atmospheres

AGU发布最新国外工作学习机会:

1. Postdoctoral Associate/Senior Postdoctoral Associate

Stony Brook, New York

Stony Brook University

A Postdoctoral Associate/Senior Postdoctoral Associate is needed to conduct basic research on the chemistry of the atmosphere.

https://findajob.agu.org/job/8012094/postdoctoral-associate-senior-postdoctoral-associate/


2. 2020 NASA Planetary Science Summer School Applications Due March 30

Pasadena, California (US)

Partial financial support is available for a limited number of individuals.

JPL - Science Mission Design Schools

Learn how to design a robotic science spacecraft mission in a 3 month experience that culminates in in a week working directly with JPL's Team X.

https://findajob.agu.org/job/8012093/2020-nasa-planetary-science-summer-school-applications-due-march-30/


3. PhD Position

Palmerston North, New Zealand

3-year scholarship with a minimum annual stipend of $25,000 NZD (tax-free) + fees + research costs

Geosciences Group, School of Agriculture and Environment, Massey University

Applications are invited for a fully funded PhD available in the Geosciences Group at Massey University, Palmerston North, New Zealand, on the topic of: Evaluating the long-term activity and sediment delivery of large, soft-rock landslides in New Zealand.

https://findajob.agu.org/job/8012082/phd-position/



关闭

地 址:北京大学廖凯原楼5层 511

邮 编:100871

电 话:010-62752344

传 真:010-62752344

邮 箱:pkuocean@pku.edu.cn

版权所有 strong>www.3522com_葡京集团-[官方网站] Copyright by ocean.pku.edu.cn @2017, All Rights Reserved.

XML 地图 | Sitemap 地图