Identification

Title

Simulations of the redistribution of formaldehyde, formic acid, and peroxides in the 10 July 1996 Stratospheric-Tropospheric Experiment: Radiation, Aerosols, and Ozone deep convection storm

Abstract

By using a three-dimensional convective cloud model to simulate the 10 July 1996, Stratospheric-Tropospheric Experiment: Radiation, Aerosols, and Ozone-Deep Convection experiment storm, we investigate the fate of formaldehyde (CH&#x2082O), formic acid (HCOOH), hydrogen peroxide (H&#x2082O&#x2082), and methyl hydrogen peroxide (CH&#x2083OOH) in an isolated thunderstorm. CH&#x2082O, H&#x2082O&#x2082, and CH&#x2083OOH are important HO x radical and ozone (O&#x2083) precursors in the upper troposphere. Thus, determining their source strength to the upper troposphere is important for estimating O&#x2083 production. The model simulates O&#x2083-NO x -CH&#x2084 chemistry (no nonmethane hydrocarbon chemistry) which is affected by the cloud microphysics and production of NO x by lightning. The retention of the soluble species within ice, snow, and hail during drop freezing results in less transport of the species to the upper troposphere than when the species is degassed during drop-freezing processes. Aqueous-phase chemistry is found to be inadequate in producing sufficient quantities of HCOOH so that HCOOH could serve as a reliable indicator of cloud-processed air. The production of nitrogen oxides by lightning has little to no effect on convective outflow mixing ratios of CH&#x2082O, H&#x2082O&#x2082, and CH&#x2083OOH within 100 km of the convective cores. Thus, it is unlikely that lightning affects concentrations of HO x precursors near active convection. Scavenging of CH&#x2082O and H&#x2082O&#x2082 significantly affects their concentrations in the convective outflow, although H&#x2082O&#x2082 mixing ratios were still similar to CH&#x2083OOH indicating that both peroxides can contribute equally to O&#x2083 production downwind of convection.

Resource type

document

Resource locator

Unique resource identifier

code

https://n2t.org/ark:/85065/d7d21xtv

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

2007-07-12T00:00:00Z

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