Identification

Title

Seasonal injection strategies for stratospheric aerosol geoengineering

Abstract

Simulations of stratospheric aerosol geoengineering have typically considered injections at aconstant rate over the entire year. However, the seasonal variability of both sunlight and the stratosphericcirculation suggests seasonally dependent injection strategies. We simulated single‐point injections of thesame amount of SO2in each of the four seasons and atfive different latitudes (30°S, 15°S, equator, 15°N, and30°N), 5 km above the tropopause. Ourfindings suggest that injecting only during one season reduces theamount of SO2needed to achieve a certain aerosol optical depth, thus potentially reducing some of the sideeffects of geoengineering. Wefind, in particular, that injections at 15°N or 15°S in spring of thecorresponding hemisphere results in the largest reductions in incoming solar radiation. Compared to annualinjections, by injecting in the different seasons we identify additional distinct spatiotemporal aerosol opticaldepth patterns, thanks to seasonal differences in the stratospheric circulation.

Resource type

document

Resource locator

Unique resource identifier

code

http://n2t.net/ark:/85065/d7z60s1v

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

Text

originating controlled vocabulary

title

Resource Type

reference date

date type

publication

effective date

2016-01-01T00:00:00Z

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

End position

Dataset reference date

date type

publication

effective date

2019-07-16T00:00:00Z

Frequency of update

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Limitations on public access

None

Responsible organisations

Responsible party

contact position

OpenSky Support

organisation name

UCAR/NCAR - Library

full postal address

PO Box 3000

Boulder

80307-3000

email address

opensky@ucar.edu

web address

http://opensky.ucar.edu/

name: homepage

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact