Data from 2002 to 2012 captures calibrated upper and lower background limb spectra from the Envisat satellite's GOMOS instrument. The European Space Agency (ESA) produced this Level 1b product, which includes flat-field corrected spectra with and without stray light corrections. Each occultation event results in a data file sized in megabytes.
Use Cases
- Retrieving vertical profiles of ozone concentration by analyzing spectral absorption features in limb spectra.
- Studying aerosol layers and polar stratospheric clouds using calibrated spectral radiance across the elevation range.
- Correcting for instrument stray light effects by comparing the provided spectra with and without stray light correction.
- Analyzing atmospheric composition trends over time from 2002 to 2012 using the time-series of occultation events.
Strengths
- Data spans a decade of observations from 2002 to 2012.
- Provides both stray-light corrected and uncorrected spectral data for comparison.
- Covers a specific elevation range from +62 to +68 degrees for limb viewing.
Limitations
- Data collection ended in 2012, making it temporally stale for current atmospheric studies.
- Specific sample size, row count, and geographic coverage details are unavailable.
- The dataset's utility is constrained to the specific azimuth (+90 to +190 deg) and elevation ranges of the GOMOS instrument.
Provenance
- Source
- European Space Agency (ESA)
- Collection Method
- Measured by the Global Ozone Monitoring by Occultation of Stars (GOMOS) instrument aboard the Envisat satellite.
- Time Range
- 2002 to 2012
- Freshness
- Last updated in 2012; no ongoing updates.
- Geography
- Global coverage, constrained to satellite orbital path and instrument viewing geometry.