Identification

Title

Airborne observations constrain heterogeneous nitrogen and halogen chemistry on tropospheric and stratospheric biomass burning aerosol

Abstract

Heterogeneous chemical cycles of pyrogenic nitrogen and halides influence tropospheric ozone and affect the stratosphere during extreme Pyrocumulonimbus (PyroCB) events. We report field-derived N2O5 uptake coefficients, gamma(N2O5), and ClNO2 yields, phi(ClNO2), from two aircraft campaigns observing fresh smoke in the lower and mid troposphere and processed/aged smoke in the upper troposphere and lower stratosphere (UTLS). Derived phi(ClNO2) varied across the full 0-1 range but was typically <0.5 and smallest in a PyroCB (<0.05). Derived gamma(N2O5) was low in agricultural smoke (0.2-3.6 x 10(-3)), extremely low in mid-tropospheric wildfire smoke (0.1 x 10(-3)), but larger in PyroCB processed smoke (0.7-5.0 x 10(-3)). Aged biomass burning aerosol in the UTLS had a higher gamma(N2O5) of 17 x 10(-3) that increased with sulfate and liquid water, but that was 1-2 orders of magnitude lower than values for aqueous sulfuric aerosol used in stratospheric models.

Resource type

document

Resource locator

Unique resource identifier

code

https://n2t.org/ark:/85065/d7pc36hg

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

2024-02-28T00:00:00Z

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