Polluted Troposphere IONS: Surface Level Atmospheric Measurements of Background Ion Production rates and Small Ion Concentrations

Ionisation as a precursor to Aerosol Formation (also known as IONS) was a NERC Polluted Troposphere Research Programme project (Round 1 - NER/T/S/2002/00150 - Duration 2002 - 2005) and was led by Dr RG Harrison, University of Reading.

Formation of ultrafine particles from molecular cluster ions in the atmosphere has been shown to occur in urban air, from both experimental findings and theoretical considerations. Ion-induced (or mediated) aerosol formation is currently neglected, despite the considerable variability known in atmospheric ions. Ionisation in the atmosphere is ubiquitous, arising from cosmic rays and natural radioactivity, with a further contribution from nuclear reprocessing. The efficiency of ion to particle conversion was sensitive to gas composition and condensable vapour supply.

The work measured ion-induced ultrafine particle production in surface air, combining ion and aerosol data. Existing ion-aerosol theory will be extended to include particle production from ions, to assess the significance for clouds of additional condensation nuclei.

This dataset collection contains surface level atmospheric measurements of background ion production rates and small ion concentrations. Data from the TORCH2 campaign are also included as used by the project participants.

The Polluted Troposphere Programme was a 5-year NERC thematic research programme which was centred upon the study of polluted boundary layer air and its transport to the free troposphere. The programme focussed on the regional scale, defined as intermediate between urban and hemispheric.

Date (Publication): 2007-12-10T02:35:42

Date (Creation): 2007-12-10T02:35:42

Citation identifier: https://catalogue.ceda.ac.uk/uuid/57038ca1ded5da15898197487c8edea9

Citation identifier: NCAS British Atmospheric Data Centre (NCAS BADC) / 57038ca1ded5da15898197487c8edea9

Point of contact

Organisation name	Individual name	Electronic mail address	Role
NERC Polluted Troposphere Programme Participants		unknown	Author
Unavailable	Harrison, R.G.	Unavailable	Author
Unavailable	Wilding, R.	Unavailable	Author
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	Custodian
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	Distributor
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	pointofContact
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	Publisher

Maintenance and update frequency: Unknown

Update scope: Series

Keywords

Polluted Troposphere
Ionisation
Chemistry

GEMET - INSPIRE themes, version 1.0

atmospheric conditions

Access constraints: Other restrictions

Other constraints: All data within this dataset collection are available to any registered CEDA user.

Use constraints: Other restrictions

Other constraints: Under the following licence https://artefacts.ceda.ac.uk/licences/missing_licence.pdf, appropriate use of these data may fall under unstated use. This message is intended as guidance, always read the full licence. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.

Other constraints: Under the following licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/, appropriate use of these data may fall under any use. This message is intended as guidance, always read the full licence. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.

Spatial representation type: Grid

Language: English

Topic category

Climatology, meteorology, atmosphere

Begin date: 2003-09-28T23:00:00

End date: 2005-01-21T00:00:00

Unique resource identifier: WGS 84

Distribution format

Name	Version
Contact data centre for format details.

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
	https://catalogue.ceda.ac.uk/uuid/57038ca1ded5da15898197487c8edea9	CEDA Data Catalogue Page

OnLine resource

Protocol	Linkage	Name
	http://badc.nerc.ac.uk/conditions/polltrop.html	Polluted Troposphere Data Protocol

OnLine resource

Protocol	Linkage	Name
	http://data.ceda.ac.uk/badc/polluted-tropo/doc/publications.html	BADC Doc: Polluted Troposphere Publications

Hierarchy level: Series

Conformance result

Title: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

Date (Publication): 2010-12-08

Statement: Please see data lineage statements for each dataset within this collection for data lineage details.

Metadata

File identifier: 57038ca1ded5da15898197487c8edea9 XML

Metadata language: English

Character set: UTF8

Hierarchy level: Series

Hierarchy level name: series

Date stamp: 2025-12-04T03:26:17

Metadata standard name: UK GEMINI

Metadata standard version: 2.3

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	Point of contact

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