Global Stratospheric Analyses are provided on a pair of 65x65 polar grids, daily at 12Z. The dataset contains parameters like pressure, geopotential height, and temperature across 8 mandatory levels from 70 to 0.4 mb. It was operationally prepared by NCEP using ATOVS data and covers the period from May 1997 to November 2008.
Use Cases
- Analyze temporal trends in stratospheric temperature and geopotential height across the 8 pressure levels.
- Model polar vortex dynamics using daily geopotential height and pressure data on the 65x65 polar grids.
- Assimilate historical temperature and pressure observations from the ATOVS sensors into reanalysis projects.
- Study vertical structure of the stratosphere by comparing parameters like temperature across levels from 70 to 0.4 mb.
Strengths
- Daily temporal resolution at 12Z provides consistent time-series data.
- Spatial coverage includes two 65x65 polar grids for focused analysis of high-latitude regions.
- Data spans over 11 years from May 1997 to November 2008.
Limitations
- Data is temporally stale, with the last update recorded in 2007 and coverage ending in 2008.
- Spatial resolution is limited to polar grids, offering incomplete global coverage.
- Specific row counts, file sizes, and data volumes are unknown.
Provenance
- Source
- NCEP (National Centers for Environmental Prediction)
- Collection Method
- Operational analyses prepared using ATOVS data, which involves sensors including the AMSU.
- Time Range
- May 1997 to November 2008
- Freshness
- null
- Geography
- Global, focused on polar regions via specified grids.