The HALOE instrument
flies on the Upper Atmosphere Research Satellite (UARS), and has been in
operation since October 1991. It views solar infrared radiation by means
of solar occultation, and measures water vapour, ozone, methane, hydrogen
fluoride (HF), hydrogen chloride (HCl), nitrogen oxode (NO), nitrogen dioxide
(NO2), temperature and aerosols. Latitudinal coverage is from
80oS to 80oN over the course of a year, and the altitude
range of the measurements extends from 15 km to 60-130 km (depending on
the constituent observed). Advantages of HALOE include high accuracy and
self-calibration. In addition, HALOE is still in operation (at time of
writing) and thus is very useful in the study of interannual variability
of middle atmospheric constituents. Accordingly, the HALOE dataset forms
a highly important basis of much middle atmosphere research.
Further information on HALOE is available from the HALOE
homepage.
The data is available from the
BADC
(UK) or the UARS
central data handling facility , which also contains links to the homepages
of other UARS instruments.
A Users
Guide is available to help new users locate, read and analyse the HALOE
data available at Imperial College (Internal Users only).
John Harries heads the
research effort at Imperial College. He is a member of the HALOE Science
Team and played an important role in the development of the HALOE instrument.
Recent HALOE papers include:
Dr. R. Toumi is
interested in recent observations of water vapour trends as seen by HALOE.
It seems the stratopshere is getting wetter! (abstract)
Adam Hicks is examining
HALOE nitric oxide and ozone measurements in the lower stratosphere, to
identify important dynamical and chemical processes operating in this region
of the atmosphere.
A Reference
List of past work done by the group associated with HALOE is
available.
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Last modified 26/01/1999.
WWW page comments to Adam Hicks