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Halogen Occultation Experiment (HALOE): Global Stratospheric and Mesospheric Profiles of Pressure, Temperature and Chemical Composition

The Halogen Occultation Experiment (HALOE) is one of 10 instruments aboard the Upper Research Satellite (UARS). The HALOE instrument was built by an instrument team based at NASA Langley and launched on the UARS on 12th September 1991. Data collection began on 11th October 1991 until 21st November 2005. The Principal Investigator (PI) is Dr James M. Russell III.

The HALOE experiment uses solar occultation to measure vertical profiles of ozone (O3), hydrogen chloride (HCl), Hydrogen Fluoride (HF), methane (CH4), water vapour (H2O), nitric oxide (NO), nitrogen dioxide (NO2), aerosol extinction, and temperature versus pressure with an instantaneous vertical field of view of 1.6 km at the Earth limb.

The instrument achieves near-global coverage with measurements sweeping between high latitudes in one hemisphere and high latitudes in the other over a period of between 2 and 6 weeks. The latitude range covered by the instrument varies over the course of the year between 80°S and 80°N. The maximum northerly and southerly latitudes occur in spring and autumn in the few weeks either side of the equinoxes. The range of altitude of the measurements depends on the channel being used, but measurements cover the stratosphere and lower mesosphere and, in the case of the nitric oxide channel, extend into the lower thermosphere.

HALOE studies the dynamics of polar and other atmospheric regions using the tracers, HF, CH4 and H2O. Studying the trends in HCl and HF will help distinguish the relative importance of anthropogenic versus natural chlorine sources and analyse in detail the development and recovery of the Antarctic ozone hole. Additional studies are intended to identify and assess stratosphere-troposphere exchange.

The BADC holds HALOE data at level 2 (uninterpolated profiles at measurement locations), version 19 for the period 11th Ocotber 1991 to 21st November 2005.

The BADC also holds the HALOE level 3A version 19 data spanning the time period from 11th October 1991 through 21st December 2000. HALOE L3 data is public. Updates through to September 24, 2001 are available directly from GSFC NASA.

The HALOE level 3A data are vertical profiles of methane (CH4), hydrogen chloride (HCl), hydrogen fluoride (HF), nitric oxide (NO), nitrogen dioxide (NO2), water vapor (H2O), ozone (O3), temperature (TEMP), and aerosol extinction (AEXTCH4, AEXTHCL, AEXTHF and AEXTNO), interpolated onto a standard set of vertical levels evenly spaced in pressure, and onto standard times (level 3AT) and standard latitudes (level 3AL). The vertical scan range is from about 10 to 65 km, and the vertical resolution is approximately 2.5 km between pressure levels.

Simple

Date (Publication)
2006-12-10T03:04:16
Date (Creation)
2006-12-10T03:04:16
Identifier
https://catalogue.ceda.ac.uk/uuid/6297603d25100cc5e977b750c1a524f7
Identifier
NCAS British Atmospheric Data Centre (NCAS BADC) / 6297603d25100cc5e977b750c1a524f7
Author
  NASA Langley Research Center (NASA Langley) - author
Author
  NASA Langley DAAC - author
USA
Author
  Unavailable - Russell, J.E. ( author )
Author
  Unavailable - Harries, John E ( author )
Custodian
  NCAS British Atmospheric Data Centre (NCAS BADC) - custodian
British Atmospheric Data Centre , STFC Rutherford Appleton Laboratory , Harwell Oxford , OX11 0QX , UK
+44(0)1235 446432
Distributor
  NCAS British Atmospheric Data Centre (NCAS BADC) - distributor
British Atmospheric Data Centre , STFC Rutherford Appleton Laboratory , Harwell Oxford , OX11 0QX , UK
+44(0)1235 446432
pointofContact
  NCAS British Atmospheric Data Centre (NCAS BADC) - point_of_contact
British Atmospheric Data Centre , STFC Rutherford Appleton Laboratory , Harwell Oxford , OX11 0QX , UK
+44(0)1235 446432
Publisher
  NCAS British Atmospheric Data Centre (NCAS BADC) - publisher
British Atmospheric Data Centre , STFC Rutherford Appleton Laboratory , Harwell Oxford , OX11 0QX , UK
+44(0)1235 446432
Maintenance and update frequency
unknown Unknown
Update scope
series Series
Keywords
  • HALOE
  • Chemistry
  • Temperature
  • Pressure
GEMET - INSPIRE themes, version 1.0
  • atmospheric conditions
Access constraints
otherRestrictions Other restrictions
Other constraints
Please contact the data centre for assistance on accessing data from this dataset collection.
Use constraints
otherRestrictions 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 Grid
Metadata language
EnglishEnglish
Topic category
  • Climatology, meteorology, atmosphere
N
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Begin date
1991-01-01T00:00:00
End date
2005-11-30T00:00:00
Unique resource identifier
WGS 84
Distribution format
  • Contact data centre for format details. ()

Distributor
  NCAS British Atmospheric Data Centre (NCAS BADC) - Data Center Contact
British Atmospheric Data Centre , STFC Rutherford Appleton Laboratory , Harwell Oxford , OX11 0QX , UK
+44(0)1235 446432
OnLine resource
CEDA Data Catalogue Page

Detail and access information for the resource

OnLine resource
HALOE References

No further details.

OnLine resource
HALOE website

No further details.

OnLine resource
HALOE Version 19 Image Selector

No further details.

OnLine resource
HALOE Publications

No further details.

OnLine resource
BADC Doc: HALOE Helpfile

No further details.

OnLine resource
HALOE Level 3 Data at NASA GSFC

No further details.

Hierarchy level
series Series

Conformance result

Date (Publication)
2010-12-08
Statement
Please see data lineage statements for each dataset within this collection for data lineage details.
File identifier
6297603d25100cc5e977b750c1a524f7 XML
Metadata language
EnglishEnglish
Character set
8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 UTF8
Hierarchy level
series Series
Hierarchy level name
series
Date stamp
2025-11-15T03:26:19
Metadata standard name
UK GEMINI
Metadata standard version
2.3
Point of contact
  NCAS British Atmospheric Data Centre (NCAS BADC)
British Atmospheric Data Centre , STFC Rutherford Appleton Laboratory , Harwell Oxford , OX11 0QX , UK
+44(0)1235 446432
 
 

Overviews

Spatial extent

N
S
E
W
thumbnail


Keywords

GEMET - INSPIRE themes, version 1.0
atmospheric conditions

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