The Observing-system Research and predictability experiment ER2 MODIS Airborne Simulator

THORPEX_ER2_MAS data are THe Observing-system Research and Predictability EXperiment (THORPEX) ER_2 MODIS Airborne Simulator (MAS) Data in HDF covering Hawaii and the Pacific Ocean.THe Observing-system Research and predictability experiment (THORpex) is a ten-year international research program where the primary objective is to accelerate improvements in short range weather predictions and warnings over the Northern Hemisphere. The fifth in an ongoing series of ER-2 field experiments, THORpex is the primary over-water validation experiment for the GIFTS (Geosynchronous Imaging Fourier Transform Spectrometer) satellite. The MODIS Airborne Simulator (MAS) is an airborne scanning spectrometer that acquires high spatial resolution imagery of cloud and surface features from its vantage point on-board a NASA ER-2 high-altitude research aircraft. The MAS spectrometer acquires high spatial resolution imagery in the range of 0.55 to 14.3 microns. A total of 50 spectral bands are available in this range. A 50-channel digitizer which records all 50 spectral bands at 12 bit resolution became operational in January 1995. The MAS spectrometer is mated to a scanner sub-assembly which collects image data with an IFOV of 2.5 mrad, giving a ground resolution of 50 meters from 20000 meters altitude, and a cross track scan width of 85.92 degrees.

Data and Resources

Additional Info

Field	Value
Maintainer	Earthdata Forum
Last Updated	June 23, 2026, 03:00 (UTC)
Created	April 1, 2025, 19:30 (UTC)
accessLevel	public
bureauCode	{026:00}
catalog_conformsTo	https://project-open-data.cio.gov/v1.1/schema
harvest_object_id	510709f4-f4dc-4feb-84bd-bfbd080a3099
harvest_source_id	b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title	Science Discovery Engine
identifier	10.5067/ASDC_DAAC/THORPEX/0001
license	https://www.usa.gov/government-works
modified	2026-06-15T22:16:02Z
programCode	{026:000}
publisher	NASA/LARC/SD/ASDC
resource-type	Dataset
source_datajson_identifier	true
source_hash	bf1ff02af59a24d0756fda63d2e06c0bfa641c1f3ab2212c147f366cbb52e615
source_schema_version	1.1
spatial	["CARTESIAN", [{"Boundary": {"Points": [{"Latitude": 15.85, "Longitude": -167.45}, {"Latitude": 15.85, "Longitude": -117.78}, {"Latitude": 42, "Longitude": -117.78}, {"Latitude": 42, "Longitude": -167.45}, {"Latitude": 15.85, "Longitude": -167.45}]}}]]
temporal	2003-01-31/2003-04-10
theme	{"Earth Science"}