ACES TIMING DATA

The ALTUS Cloud Electrification Study (ACES) was based at the Naval Air Facility Key West in Florida. During August or 2002, ACES researchers overflights of thunderstorms over the southwestern corner of Florida. For the first time in NASA research, an uninhabited aerial vehicle (UAV) named ALTUS was used to collect cloud electrification data. Carrying field mills, optical sensors, electric field sensors and other instruments, ALTUS allowed scientists to collect cloud electrification data for the first time from above the storm, from its birth through dissipation. This experiment allowed scientists to achieve the dual goals of gathering weather data safely and testing new aircraft technology. This dataset consists of timing data used for the experiment. When used it provides: syncclock_time = time found at the syncclock (VSI-SYnCCLOCK-32) in seconds from first file name, syncclock_m_time = time found at the syncclock (VSI-SYnCCLOCK-32) in Matlab dateform format, system_time = system time in seconds from first file name, system_m_time = system time in dateform format, gps_time = time found at the GPS unit in seconds from first file name, gps_m_time = time found at GPS unit in dateform, cmos_time = time found at the computer CMOS in seconds from first file name, cmos_m_time = time found at the computer CMOS in dateform.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated September 15, 2026, 04:25 (UTC)
Created April 1, 2025, 14:10 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 45591cf9-3758-4d8a-b4fa-d2c4b3faf723
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.5067/ACES/CLOCKS/DATA101
license https://www.usa.gov/government-works
modified 2026-09-07T22:16:03Z
programCode {026:000}
publisher NASA/MSFC/GHRC
resource-type Dataset
source_datajson_identifier true
source_hash db3b6116f63629a45ce980a07067fe2c80b2fb0f35648684de2b5d1cfac7551b
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -85.0, "NorthBoundingCoordinate": 26.0, "EastBoundingCoordinate": -81.0, "SouthBoundingCoordinate": 23.0}]]
temporal 2002-07-10/2002-08-30
theme {"Earth Science"}