Identification

Title

Twenty-first century reversal of the surface ozone seasonal cycle over the northeastern United States

Abstract

Changing emissions can alter the surface O₃ seasonal cycle, as detected from northeastern U.S. (NE) observations during recent decades. Under continued regional precursor emission controls (>80% decreases in NE NOx by 2100), the NE surface O₃ seasonal cycle reverses (to a winter maximum) in 21st century transient chemistry-climate simulations. Over polluted regions, regional NOx largely controls the shape of surface O₃ seasonal cycles. In the absence of regional NOx controls, climate warming contributes to a higher surface O₃ summertime peak over the NE. A doubling of the global CH₄ abundance by 2100 partially offsets summertime surface O₃ decreases attained via NOx reductions and contributes to raising surface O₃ during December-March when the O₃ lifetime is longer. The similarity between surface O₃ seasonal cycles over the NE and the Intermountain West by 2100 indicates a NE transition to a region representative of baseline surface O₃ conditions.

Resource type

document

Resource locator

Unique resource identifier

code

https://n2t.org/ark:/85065/d7gq6zrf

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

2014-10-28T00:00:00Z

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