DC-8 Advanced Vertical Atmospheric Profiling System Dropsondes (AVAPS) TC4

The Advanced Vertical Atmospheric Profiling System (AVAPS) dataset consists of vertical atmospheric profile measurements collected by the Advanced Vertical Atmospheric Profiling System (AVAPS) dropsondes released from the NASA DC-8 aircraft. The observations took place during the the Tropical Composition, Cloud, and Climate Coupling (TC4) field campaign. TC4 occurred during the boreal summer of 2007, with the primary goal was to better understand the role that the tropical tropopause layer (TTL) plays in the Earth’s climate and atmospheric chemistry by using in situ and remotely sensed products from the ground, balloons, and aircraft with data collected from NASA satellites. TC4 allowed researchers to gain insight into convective transport between the ground and the TLL, and into transport mechanisms across the TTL. Data are available from June 28 through August 8, 2007 in ICARTT-ASCII and JPG formats.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated October 27, 2026, 03:27 (UTC)
Created June 2, 2026, 21:54 (UTC)
Identifier 10.5067/TC4/DC8AVAPS/DATA101
Modified 2026-10-19T22:16:07Z
Theme {"Earth Science"}
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 30a7a1d4-198a-4d94-8f11-7b7648fc773a
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
license https://www.usa.gov/government-works
programCode {026:000}
publisher NASA/MSFC/GHRC
resource-type Dataset
source_datajson_identifier true
source_hash 2cf7e0f3960a5eef59892b3715377cab9c2796080ac4bce6c79b3624b58ce265
source_schema_version 1.1
spatial ["CARTESIAN", [{"NorthBoundingCoordinate": 44.399, "SouthBoundingCoordinate": -4.598, "EastBoundingCoordinate": -77.538, "WestBoundingCoordinate": -127.122}]]
temporal 2007-06-28/2007-08-08