REference Antarctic Data for Environmental Research

Project Description
[From http://www.antarctica.ac.uk/met/READER/background.html]

The READER Project

READER (REference Antarctic Data for Environmental Research) is a
project of the Scientific Committee on Antarctic Research (SCAR
http://www.scar.org/) and has the goal of creating a high quality,
long term dataset of mean surface and upper air meteorological
measurements from in-situ Antarctic observing systems. These data will
be of value in climate research and climate change investigations.

The primary sources of data are the Antarctic research stations and
automatic weather stations. Data from mobile platforms, such as ships
and drifting buoys are not being collected since our goal is to derive
time series of data at fixed locations.

Surface and upper air data are being collected and the principal
statistics derived are monthly and annual means. Daily data will not
be provided in order to keep the data set to a manageable size. With
the resources available to the project, it is clearly not possible to
collect all the information that could be required by the whole range
of investigations into change in the Antarctic. Instead a key set of
meteorological variables (surface temperature, mean sea level pressure
and surface wind speed, and upper air temperature, geopotential height
and wind speed at standard levels) are being assembled and a
definitive set of measurements presented for use by researchers.

A lot of stations have been operated in the Antarctic over the years;
many for quite short periods. However, our goal here is to provide
information on the long time series that can provide insight into
change in the Antarctic. So to be included, the record from a station
must extend for 25 years, although not necessarily in a continuous
period, or be currently in operation and have operated for the last 10
years. In READER we have chosen to use only data from year-round
stations.

It is important when using mean data to know the number of
observations that were used in computing the means. As discussed in
the data section, the READER mean monthly values are therefore colour
coded to indicate the percentage of possible observations used in
computing each mean.

Metadata are being provided, where possible, to indicate the type of
observing systems used to make the measurements, changes of observing
site, changes of observing practice etc. The structure of the metadata
is deliberately flexible and will vary considerable between stations,
depending on what information is available.

The READER data set is being disseminated via CD-ROM and through the
World Wide Web at
http://www.antarctica.ac.uk/met/programs-hosted.html. The first
release of the data set covers the period up to the end of 2000 and
contains all the data collected so far. However, there are still a
number of significant gaps and it is hoped that these can be filled
over the coming years. In particular, we still require more upper air
data.

The data set will be kept up to date on a regular basis via the web
site and new versions of the CD released periodically.

For more information on the READER project contact:

John Turner
British Antarctic Survey
High Cross
Madingley Road
Cambridge
CB3 0ET
UK
E-mail: J.Turner@bas.ac.uk
WWW: http://www.nerc-bas.ac.uk/public/icd/jtu/