Data · collection
Polar Atmospheric Chemistry at the Tropopause Dataset
Listed in NASA Earthdata CMR
Description
PACT is a scientific research Action Group project of the Scientific Committee on Antarctic Research (SCAR; scar.org/), conducted under the Standing Scientific Group on Physical Sciences (SSG-PS; scar.org/researchgroups/physicalscience/ ). It is a specialised project for scientific workers in the fields of atmospheric and climate research. The goal of PACT is to provide a unique and convenient set of observational data and analyses derived from high-latitude ozonesonde measurements to help improve understanding of the distribution and variability of ozone in the extratropical tropopause region and the feedbacks of ozone change to polar climate.
Objectives PACT will produce a documented database consisting of the following information derived from existing high latitude ozonesonde measurements; 1. High resolution profiles of ozone mixing ratio and partial pressure in the vicinity of the tropopause. 2. The height of the chemical tropopause. 3.
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Ten-day forward and backward trajectory information at selected potential temperature surfaces intersected by the ozonesonde profiles. 4. Other relevant diagnostic information derived from radiosonde measurements and data assimilations (including lapse rate tropopause location, and interpolated potential vorticity and potential temperature associated with the ozonesonde measurements). The specific information gathered by PACT is aimed to help model studies of the UTLS region particularly the validation of heating and cooling rates and the transport fluxes of trace gases.
Data will be made available through the Australian Antarctic Division (AAD) and the Integrated Global Radiosonde Archive (IGRA; ncdc.noaa.gov/data-access/weather-balloon/integrated-global-radiosonde-archive). PACT data may be useful in the following studies: Radiative and chemical processes in the tropopause region. Trace gas transport and exchange between the troposphere and stratosphere.
Ozone microphysics. Long-term changes and variability in the structure and composition of the lower atmosphere. Feedbacks of climate change.
Validation of coupled chemistry-climate models and atmospheric measurements.
Links
Get the data
- Download point for the data data.aad.gov.au/eds/3969/download ↗
download · from NASA CMR
Documentation and papers
- data.aad.gov.au /aadc/metadata/citation.cfm?entry_id=PACT ↗
Citation reference for this metadata record and dataset
documentation · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214311241-AU_AADC.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214311241-AU_AADC.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Atmospheric Chemistry · Ozone · OZONESONDES · RADIOSONDES
- Inferred from text
- Atmospheric sciences 74%
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214311241-AU_AADC | 15 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3701 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (74%) |
| concepts[instrument].gcmd_instrument:ozonesondes | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-chemistry | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-chemistry/oxygen-compounds/ozone | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:radiosondes | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |