APHH: Fluorescence Assay Gas Expansion measurements of OH, HO2 and RO2 made at the IAP-Beijing site during the winter and summer campaigns.

This dataset contains Fluorescence Assay Gas Expansion measurements of OH, HO2 and RO2 made at the Institute of Atmospheric Physics land station (IAP), Beijing site during the winter and summer APHH-Beijing campaigns for the Atmospheric Pollution & Human Health in a Chinese Megacity (APHH) programme.

The measurements were taken using the FAGE (Fluorescence Assay by Gas Expansion) technique which is a LIF (laser induced fluorescence) that measures on-resonance fluorescence at 308 nm. HO2 and RO2 are converted to OH via reaction with NO and NO + CO respectively.

The instrument is calibrated by photolysis of known concentration of water vapour at 185 nm to generate know concentrations of OH and HO2, same method used for HO2 but NO is injected into the flow to convert HO2 to OH. RO2 is calibrated by photolysing water vapur at 185 nm to generate OH but CH4 is added to convert OH to CH3O2, then CH3O2 is converted to OH using CO and NO. The calibration was preform every three days on campaign, and from this we can convert counts measured into concentration. The units for OH, HO2 and RO2 and there associated errors is molecules cm-3. The data has been filtered for instabilities in data collection including unstable pressure, unstable online, low laser power and not going online correctly. The data has been flagged for when the values were below limit of detection.

Date (Publication): 2018-07-26T15:52:44

Date (Creation): 2018-07-26T15:52:44

Citation identifier: https://catalogue.ceda.ac.uk/uuid/bb339ff791814fc6a8b9a93d339f5bc1

Citation identifier: Centre for Environmental Data Analysis (CEDA) / bb339ff791814fc6a8b9a93d339f5bc1

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Unavailable	Slater, Eloise	Unavailable	Author
Unavailable	Whalley, Lisa	Unavailable	Author
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	Custodian
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	Owner
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	Distributor
Unavailable	Bloss, William	Unavailable	Principal investigator
Unavailable	Harrison, Roy	Unavailable	Principal investigator
Unavailable	Kelly, FJ	Unavailable	Principal investigator
Unavailable	Lewis, Alastair C.	Unavailable	Principal investigator
Unavailable	Loh, M	Unavailable	Principal investigator
Unavailable	Nemitz, E.	Unavailable	Principal investigator
Unavailable	Sokhi, R.	Unavailable	Principal investigator
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	pointofContact
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	Publisher

Maintenance and update frequency: Unknown

Update scope: Dataset

Keywords

OH
HO2
RO2
China
pollution
APHH

GEMET - INSPIRE themes, version 1.0

atmospheric conditions

Access constraints: Other restrictions

Other constraints: Access to these data is available to any registered CEDA user. Please Login or Register for a CEDA account to gain access.

Use constraints: Other restrictions

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: 2016-11-08T00:00:00

End date: 2017-06-25T22:59:59

Unique resource identifier: WGS 84

Distribution format

Name	Version
Data are NASA Ames formatted

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
	https://catalogue.ceda.ac.uk/uuid/bb339ff791814fc6a8b9a93d339f5bc1	CEDA Data Catalogue Page

OnLine resource

Protocol	Linkage	Name
	http://data.ceda.ac.uk/badc/aphh/data/beijing/leeds-fage/	DOWNLOAD

OnLine resource

Protocol	Linkage	Name
	https://www.birmingham.ac.uk/research/activity/environmental-health/projects/aphh/index.aspx	Project Webpage at University of Birmingham

Hierarchy level: Dataset

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: Data produced by Atmospheric Pollution & Human Health (APHH) project participants at University of Leeds and uploaded to Centre for Environmental Data Anaylsis (CEDA) archive.