1f7483bf05e843cc94ccdacc004ffe51
English
8-bit variable size UCS Transfer Format, based on ISO/IEC 10646
7ca95b35d9e378c10343f2730a880549
dataset
NCAS British Atmospheric Data Centre (NCAS BADC)
+44(0)1235 446432
British Atmospheric Data Centre
STFC Rutherford Appleton Laboratory
Harwell Oxford
OX11 0QX
UK
badc@rl.ac.uk
pointOfContact
2024-03-28T21:15:45
UK GEMINI
2.3
WGS 84
MRF A753 ACTO flight: Airborne atmospheric and chemistry measurements taken on board the Met Office C-130 Hercules aircraft
2006-12-10T03:09:18
publication
2006-12-10T03:09:18
creation
http://catalogue.ceda.ac.uk/uuid/1f7483bf05e843cc94ccdacc004ffe51
1f7483bf05e843cc94ccdacc004ffe51
NCAS British Atmospheric Data Centre (NCAS BADC)
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 A753 for the Atmospheric Chemistry and Transport of Ozone in the upper troposphere-lower stratosphere (UTLS) (ACTO) campaign. The flight was located over the Irish sea.
The purpose of the flight was to investigate further the various filaments of air that were sampled in flight A752. That is polluted air, having origins in the Mediterranean region; clean marine boundary layer air; ozone-rich, dry upper tropospheric air (from upper tropospheric jet) and also polluted boundary layer air, which has been uplifted from N. America. The region should be very structured having many different characteristics. The filaments of air were expected to be aligned zonally, sloping downwards to the North.
The flight was successful in that some of the filaments were found. However, the filaments were not found in the expected area. During a level hold at FL160 (for air traffic) and at the beginning of the first run at FL170 (NOxy calibrations), a dry ozone-rich filament was sampled. Later during the same run, air with moderately high ozone (around 70 ppb), high relative humidity and elevated peroxide was observed. At the subsequent level (FL240) ozone mixing ratios were generally lower (around 45-50 ppb) and the CN count was elevated (2500). However, during the turn at ca. 12:10 on FL240 (SE corner of the flight), another dry, ozone-rich filament was found. A further filament was expected to the North but this was not found. Towards the end of the flight further investigations were made at FL170, in order to try to find the first area of high ozone air (i.e. the air that was sampled during the first NOxy cal run). This air was found but interestingly, the ozone-rich dry air also correlated with high PAN and black carbon.
The instruments generally worked well. The FWVS was adjusted in flight and then found to maintain a good correlation with the GE. Neither the CO nor the HCHO were flown due to previously existing faults. There was a problem with the peroxide pump but this was not until the end of the flight.
Meteorology
The meteorological situation was dominated by high pressure, centred to the north of Scotland. The south of the country was in a more showery regime. However, not much cloud was observed during flight: small cumulus, broken stratocumulus and some cirrus, were observed at times.
Met Office
author
0370 900 0100
Met Office
FitzRoy Road
Exeter
EX1 3PB
enquiries@metoffice.gov.uk
author
Barjat, Hannah
Unavailable
author
Unavailable
author
Brough, Neil
Unavailable
author
Unavailable
author
Penkett, Stuart A.
Unavailable
author
Unavailable
author
Carney, R.
Unavailable
author
Unavailable
author
Lewis, Alastair C.
Unavailable
author
Unavailable
author
Methven, John
Unavailable
author
Unavailable
author
McQuaid, Jim
Unavailable
author
Unavailable
author
Phillips, G.J.
Unavailable
author
Unavailable
author
Purvis, Ruth Mary
Unavailable
author
Unavailable
author
Reeves, Claire E.
Unavailable
author
Unavailable
author
NCAS British Atmospheric Data Centre (NCAS BADC)
custodian
+44(0)1235 446432
British Atmospheric Data Centre
STFC Rutherford Appleton Laboratory
Harwell Oxford
OX11 0QX
UK
badc@rl.ac.uk
custodian
NCAS British Atmospheric Data Centre (NCAS BADC)
distributor
+44(0)1235 446432
British Atmospheric Data Centre
STFC Rutherford Appleton Laboratory
Harwell Oxford
OX11 0QX
UK
badc@rl.ac.uk
distributor
Penkett, Stuart A.
Unavailable
principal_investigator
Unavailable
principalInvestigator
NCAS British Atmospheric Data Centre (NCAS BADC)
point_of_contact
+44(0)1235 446432
British Atmospheric Data Centre
STFC Rutherford Appleton Laboratory
Harwell Oxford
OX11 0QX
UK
badc@rl.ac.uk
pointofContact
NCAS British Atmospheric Data Centre (NCAS BADC)
publisher
+44(0)1235 446432
British Atmospheric Data Centre
STFC Rutherford Appleton Laboratory
Harwell Oxford
OX11 0QX
UK
badc@rl.ac.uk
publisher
notPlanned
dataset
UTLS
ACTO
Chemistry
temperature
pressure
wind
atmospheric conditions
theme
GEMET - INSPIRE themes, version 1.0
2008-06-01
publication
otherRestrictions
Public data: access to these data is available to both registered and non-registered users.
otherRestrictions
Use of these data is covered by the following licence: http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ . When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
grid
English
climatologyMeteorologyAtmosphere
-6.6142
-1.837
50.7247
55.508
2000-05-10T09:01:30
2000-05-10T14:57:00
Data are ASCII formatted
NCAS British Atmospheric Data Centre (NCAS BADC)
Data Center Contact
+44(0)1235 446432
British Atmospheric Data Centre
STFC Rutherford Appleton Laboratory
Harwell Oxford
OX11 0QX
UK
badc@rl.ac.uk
distributor
http://catalogue.ceda.ac.uk/uuid/1f7483bf05e843cc94ccdacc004ffe51
CEDA Data Catalogue Page
Detail and access information for the resource
information
http://data.ceda.ac.uk/badc/ukmo-mrf/data/a753
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dataset
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
2010-12-08
Data collected by instruments on-board the MRF C-130 during flight A753. Data acquired by BADC for archiving during the ACTO project.