PyTOAST: Python Top Of Atmosphere Simulation Tool

Files

Vol15_PACETM.pdf (1.69 MB)

Links to Files

https://ntrs.nasa.gov/api/citations/20250011153/downloads/Vol15_PACETM.pdf

Permanent Link

https://dx.doi.org/10.64631/CUED2252
 http://hdl.handle.net/11603/41584

Collections

UMBC GESTAR II
UMBC Faculty Collection

Author/Creator

Author/Creator ORCID

https://orcid.org/0000-0001-9149-1789

Date

2025-12

Type of Work

technical reports
Text

Department

Program

Citation of Original Publication

Werdell, P. Jeremy, Amir Ibrahim, Sean Bailey, et al. PACE Technical Report Series, Volume 15. 15 (2025). https://ntrs.nasa.gov/api/citations/20250011153/downloads/Vol15_PACETM.pdf.

Rights

This is a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
Public Domain

Subjects

Abstract

PyTOAST generates simulated top-of-atmosphere Level-1B files for the PACE Ocean ColorInstrument (OCI). PyTOAST utilizes retrieved surface and atmospheric properties and top-ofatmosphere (TOA) radiances from MODIS and VIIRS, pre-computed radiative-transfer look-uptables for the OCI spectral response, and spectral libraries of land and clouds to produce realisticradiometry in the standard Level-1B format (https://oceancolor.gsfc.nasa.gov/data/pace/format/)of OCI. The PyTOAST simulator is computationally efficient, and thus allows for large scaleproduction of multi-day global data distributions with realistic viewing geometries for testing ofretrieval software mechanics and data flow.