Stratospheric Aerosol Optical Measurements from Antarctic Campaign

Backscatter and depolarization ratio data were collected in-situ by a M55 Geophysica aircraft during the 1999 APE-GAIA Antarctic campaign. The dataset captures optical properties of the stratospheric airmass using 532 nm backscattersonde instruments. Organization SCIOPS conducted the flights from Ushuaia, Argentina, toward the South Pole in September-October 1999.

Use Cases

• Analyze temporal trends in Backscatter Ratio to study aerosol layers in the Antarctic stratosphere.
• Use Depolarization Ratio measurements to infer particle shape and composition, such as distinguishing between ice crystals and volcanic ash.
• Correlate in-situ optical property data from MAS instruments with satellite-based remote sensing observations for validation.
• Model stratospheric radiative forcing by integrating measured Backscatter Ratio profiles into climate simulations.

Strengths

• Data originates from a dedicated stratospheric research aircraft campaign providing in-situ validation quality.
• Measurements target the critical Antarctic region during a specific seasonal transition.

Limitations

• Dataset size and row count are unknown, limiting assessment of statistical significance.
• Data is from a single campaign in 1999, offering a snapshot rather than long-term trends.
• Specific measurement precision, error margins, and complete instrument metadata are not provided.

Provenance

Source

nasa_earthdata, provided by organization SCIOPS.

Collection Method

In-situ measurements from MAS (Multiwavelength Aerosol Scatter) backscattersonde instruments aboard the M55 Geophysica aircraft.

Time Range

September-October 1999.

Freshness

Static dataset from a 1999 campaign; no ongoing updates.

Geography

Flights from Ushuaia, Tierra del Fuego (54°48' S, 68°19' W) toward the South Pole, covering the Antarctic stratosphere.