June 1957 to December 1958 data provides Southern Hemisphere sea-level pressure and 500 millibar height measurements on a 5-degree latitude/longitude grid from 15S to the South Pole. The dataset was created by SCIOPS from original South African data, which was interpolated to fill missing grid points. It captures atmospheric conditions during the International Geophysical Year.
Use Cases
- Analyze temporal trends in sea-level pressure to study Southern Hemisphere weather patterns during the IGY period.
- Model atmospheric circulation using the 500 mb height field to understand historical geopotential height distributions.
- Validate climate reanalysis products by comparing interpolated 5-degree grid data against other historical sources.
- Investigate spatial correlations between sea-level pressure and 500 mb height across the gridded Southern Hemisphere domain.
Strengths
- Covers a specific 19-month period critical for climate history (June 1957-December 1958).
- Provides two key atmospheric variables (sea-level pressure, 500 mb height) on a consistent 5-degree grid.
- Data was interpolated to complete a full latitude/longitude grid from the original diamond grid.
Limitations
- Dataset is temporally limited to a short 19-month window from over 60 years ago.
- Spatial coverage is restricted to the Southern Hemisphere from 15S to the pole.
- Original data underwent interpolation, which may introduce smoothing artifacts not present in raw observations.
Provenance
- Source
- nasa_earthdata, originally from South African data processed by SCIOPS.
- Collection Method
- Original data on a 10-degree by 5-degree diamond grid was interpolated by DSS to a 5-degree latitude/longitude grid.
- Time Range
- June 1957 to December 1958
- Freshness
- Historical dataset; last updated date reflects the end of the data collection period in 1958.
- Geography
- Southern Hemisphere, 15S to the South Pole on a 5-degree grid.