State of Environment

Indicator 8 - Monthly mean atmospheric pressure at Australian Antarctic Stations

Index: Description | Data | Custodian evaluation | Related resources | Parameters
Indicator Definition Monthly means of three-hourly pressures, reduced to mean sea level, for
Australian Antarctic stations Casey, Davis, Mawson and Macquarie Island.


Responsible
Organisation
organisation logo
Bureau of Meteorology, Department of the Environment and Heritage Details
Custodians
IAN BARNES-KEOGAHN
I.Barnes-Keogahn@bom.gov.au
INVESTIGATOR
Climate and Consultancy Section
GPO Box 727
Bureau of Meteorology
Tasmania and Antarctica Regional Office



Ph +61 3 6221 2043
Theme Area Atmosphere
Indicator Type Condition   
Criteria the
Indicator Satisfies
The following 11 out of 15 criteria
1. Serve as a robust indicator of environmental change
2. Reflect a fundamental or highly-valued aspect of the environment or an important environmental issue
3. Be either national in scope or applicable to regional environmental issues of national significance
4. Provide an early warning of potential problems
5. Be capable of being monitored to provide statistically verifiable and reproducible data that shows trends over time and, preferably, apply to a broad range of environmental regions
6. Be scientifically credible
7. Be easy to understand
8. Be monitored with relative ease
9. Be cost-effective
13. Contribute to the fulfillment of reporting obligations under international agreements
15. Where possible and appropriate, be consistent and comparable with other countries´┐Ż and state and territory indicators
For details of indicators, see the State of Environment Bibliography entries 16336 and 16337
Date Input Monthly measurements
Monitoring Location Mawson Details   Atlas Cove Details   Davis Details   Casey Details   Macquarie Island Details   Spit Bay Details  

Geographic Coverage is

    Latitude (-69.0 to -54.0)
    Longitude (61.0 to 159.0)

Rationale For Indicator Selection Measurement of the pressure over Antarctica and the Southern Ocean is
considered important for monitoring behaviour of pressure systems on a local
and global scale, which will help to interpret global climate change.


Design and Strategy For Indicator Monitoring Program Spatial Scale: Australian Antarctic stations: Casey (lat 660 16' 54.5" S,
long 1100 31' 39.4" E), Davis (lat 680 34' 35.8" S, long 770 58' 02.6" E),
Mawson (lat 670 36' 09.7" S, long 620 52' 25.7" E) and Macquarie Island
(lat 540 37' 59.9" S, long 1580 52' 59.9" E).


Frequency: Monthly.


Measurement technique: Barometry.


Research Issues There is need to develop a high-quality data set from the available data,
correcting erroneous data and estimating missing data. Adjustment may be
necessary for changes in site location or exposure, and for changes in
instrumentation or observing practices.


Some of these changes are documented in the station history files held by the
Regional Observations Section. These history files are currently held as paper
records, although more recent information is held electronically and there is
an effort to digitise the older records.


Before the data can be used for the detection of change, a concerted effort
will need to be made to identify deficiencies in the data, and then make
compensations where possible. This is made more difficult by the lack of
suitable comparison sites.


Data
Temporal range of the available data, as described by the metadata record, is from 01-Apr-48.

Timespan: April-1948 to March-2014.
Number of data points: 5266.

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Atlas Cove, Heard Island: Air pressure

Casey: Air pressure

Casey: Air Pressure Anomaly

Davis: Air pressure