The PACT dataset provides a specialized collection of observational data derived from high-latitude ozonesonde measurements. It is produced by the Scientific Committee on Antarctic Research (SCAR) PACT Action Group and hosted by the Australian Antarctic Division and the Integrated Global Radiosonde Archive. The data includes high-resolution ozone profiles, chemical tropopause heights, and trajectory information aimed at improving understanding of the extratropical tropopause region.
Use Cases
- Modeling radiative and chemical processes in the tropopause region based on ozone mixing ratio profiles.
- Studying trace gas transport between the troposphere and stratosphere based on ten-day forward and backward trajectory information.
- Analyzing long-term changes in lower atmospheric composition based on high-latitude ozonesonde measurements.
- Validating heating and cooling rates in coupled chemistry-climate models based on the documented ozone and diagnostic data.
Strengths
- Data is derived from high-latitude ozonesonde measurements, providing specialized polar coverage.
- Includes multiple derived data types: ozone profiles, tropopause heights, trajectory information, and other diagnostics.
- Hosted by authoritative sources like the Australian Antarctic Division and NOAA's Integrated Global Radiosonde Archive.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count, file formats, and specific temporal coverage are unknown, which may limit suitability assessment.
Provenance
- Source
- Scientific Committee on Antarctic Research (SCAR) PACT Action Group, Australian Antarctic Division (AAD), Integrated Global Radiosonde Archive (IGRA).
- Collection Method
- Derived from existing high-latitude ozonesonde measurements, radiosonde data, and data assimilations.
- Time Range
- null
- Freshness
- Last update date is unknown; freshness unverified.
- Geography
- High-latitude (polar) regions, likely focusing on the Antarctic.