ATTREX: Global Hawk Radiation Measurements from Tropical Tropopause Campaigns

In-situ radiation measurements were collected onboard the NASA Global Hawk Uninhabited Aerial System during the Airborne Tropical Tropopause Experiment (ATTREX) campaigns. The data includes properties measured by the Solar Spectral Flux Radiometer during deployments over California in 2011 and 2013, and over Guam in 2014. The collection was produced by NASA to address uncertainties in stratospheric humidity and ozone predictions.

Use Cases

• Modeling stratospheric water vapor climate feedbacks based on in-situ radiation measurements.
• Analyzing chemical composition of the Tropical Tropopause Layer based on reactive halogen and water vapor data.
• Studying cirrus cloud particle properties in the TTL based on campaign instrument measurements.
• Improving predictions of stratospheric ozone changes based on bromine-containing gas measurements.

Strengths

• Data collection is complete, covering specific campaigns in 2011, 2013, and 2014.
• Measurements were taken by a dedicated instrument (Solar Spectral Flux Radiometer) on a high-altitude platform.
• Campaigns were deployed from multiple geographic locations including California, Guam, Hawaii, and Australia.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• File formats include BIN and ISO, which may require specialized tools for processing.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

In-situ measurements collected onboard the Global Hawk UAS.

Time Range

2011, 2013, and 2014 deployments.

Freshness

Last updated 2026-03-13 12:34:24.407262; freshness should be verified.

Geography

Campaigns over California, Guam, Hawaii, and Darwin, Australia.