TRACE-P P-3B Aircraft Photolysis Frequency Measurements

Photolysis frequencies (j-values) were measured aboard the NASA P-3B aircraft during the Transport and Chemical Evolution over the Pacific (TRACE-P) campaign. The mission, involving NASA, NCAR, and universities, deployed 21 instruments on the P-3B to study air chemistry from Asia across the western Pacific in March and April 2001. This dataset is part of NASA's Global Tropospheric Experiment series.

Use Cases

• Analyzing photolysis rates for key atmospheric chemical reactions using measured j-values.
• Studying the chemical evolution of Asian air masses as they transport over the Pacific Ocean.
• Validating and improving atmospheric chemistry models with in-situ aircraft observations.
• Correlating photolysis frequencies with other concurrent measurements from the P-3B's 21 instruments.

Strengths

• Data originates from a major, multi-organizational NASA campaign (TRACE-P) with documented scientific goals.
• Measurements were collected using specialized instrumentation aboard a research aircraft (P-3B) equipped with 21 instruments.
• Provides focused temporal coverage during a key seasonal period for Asian outflow (March-April 2001).

Limitations

• Specific column names, row counts, and file sizes are not provided by any source.
• There is a conflict in the 'last updated' metadata: one source states 2002-03-01, while another states 2026 03-12.

Provenance

Source

NASA/LARC_CLOUD as part of the TRACE-P campaign within the Global Tropospheric Experiment.

Collection Method

In-situ measurements collected by instruments aboard the NASA P-3B research aircraft.

Time Range

March - April 2001

Freshness

2026-03-12 21:00:00.499339

Geography

Western Pacific region, focusing on air masses originating from Asia.