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MRF A755 ACTO flight: Airborne atmospheric and chemistry measurements taken on board the Met Office C-130 Hercules aircraft

The Meteorological Research Flight (MRF) was a Met Office facility, which flew a well-instrumented C-130 Hercules aircraft for atmospheric research purposes.



This dataset contains airborne atmospheric and chemistry measurements taken on board the Met Office C-130 Hercules aircraft flight A755 for the Atmospheric Chemistry and Transport of Ozone in the upper troposphere-lower stratosphere (UTLS) (ACTO) campaign. The flight was located over the North Atlantic.



The purpose of the flight was to investigate a dry slot behind a cold front to the North West of Scotland. Many interesting filaments of air were sampled. However, distinct 'stratospheric' filaments were not observed until the end of the flight.



After the initial end of science an interesting filament was sampled with high ozone (around 130ppb). We retraced our steps in order to fly through once more at science speed. This filament, at FL150, was further east than the forecast 'stratospheric air' filaments.



When the air of stratospheric origins was sampled it was found to have high ozone / low relative humidity as expected but it should be noted that there was also high PAN and slightly elevated black carbon.



The instruments generally worked well. The FWVS had to have the odd adjustment in flight and then found to maintain a good correlation with the GE; the peroxide began to loose flow at around FL245 and the CO was found to have a small leak of cabin air, which was corrected by 13:50. The CO was also found to be influenced by the flow through the PSAP. The CO did not show much structure during the flight until near the end when the air with stratospheric characteristics was observed.



Meteorology



An anticyclone was centred to the east of the North Sea and a waving front positioned to approximately along 7 west. The frontal cloud was quite apparent on the way to the operational area. However, a flight level (FL140) was found above most of the cloud, for the NOxy calibrations. Once past the frontal cloud there was little cloud in the operational area: just some thin cirrus.

Simple

Date (Publication)
2006-12-10T03:09:18
Date (Creation)
2006-12-10T03:09:18
Citation identifier
https://catalogue.ceda.ac.uk/uuid/1e4cb62947da412f8629de448c276f47
Citation identifier
NCAS British Atmospheric Data Centre (NCAS BADC) / 1e4cb62947da412f8629de448c276f47
Point of contact
Organisation name Individual name Electronic mail address Role

Met Office

enquiries@metoffice.gov.uk

Author

Unavailable

Barjat, Hannah

Unavailable

Author

Unavailable

Brough, Neil

Unavailable

Author

Unavailable

Carney, R.

Unavailable

Author

Unavailable

Penkett, Stuart A.

Unavailable

Author

Unavailable

Lewis, Alastair C.

Unavailable

Author

Unavailable

Methven, John

Unavailable

Author

Unavailable

McQuaid, Jim

Unavailable

Author

Unavailable

Phillips, G.J.

Unavailable

Author

Unavailable

Purvis, Ruth Mary

Unavailable

Author

Unavailable

Reeves, Claire E.

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

Unavailable

Penkett, Stuart A.

Unavailable

Principal investigator

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
Not planned
Update scope
Dataset
Keywords
  • UTLS

  • ACTO

  • Chemistry

  • temperature

  • pressure

  • wind

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
N
S
E
W
thumbnail




Begin date
2000-05-14T10:01:35
End date
2000-05-14T10:01:35
Unique resource identifier
WGS 84
Distribution format
Name Version

Data are ASCII formatted

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/1e4cb62947da412f8629de448c276f47

CEDA Data Catalogue Page

OnLine resource
Protocol Linkage Name
http://data.ceda.ac.uk/badc/ukmo-mrf/data/a755

DOWNLOAD

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 collected by instruments on-board the MRF C-130 during flight A755. Data acquired by BADC for archiving during the ACTO project.

Metadata

File identifier
1e4cb62947da412f8629de448c276f47 XML
Metadata language
English
Character set
UTF8
Parent identifier
UTLS-Ozone ACTO: Met Research Flight (MRF) C-130 Hercules aircraft atmospheric chemistry measurements and model output collection

7ca95b35d9e378c10343f2730a880549

Hierarchy level
Dataset
Date stamp
2026-02-15T03:10:50
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
 
 

Overviews

Spatial extent

thumbnail

Keywords

GEMET - INSPIRE themes, version 1.0

atmospheric conditions


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