Work

PyTOAST: Python Top Of Atmosphere Simulation Tool

Year: 2025

Type: article

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.

Source: Maryland Shared Open Access Repository (USMAI Consortium)

DOI: 10.13016/m29jvu-bkmv

Authors: Werdell, Jeremy P., Ibrahim, Amir, Bailey, Sean, Sirk, Emerson, Sayer, Andrew, McKinna, Lachlan I. W., Patt, Frederick S., Franz, Bryan A., Werdell, Jeremy P.

Language: English

Topic: Calibration and Measurement Techniques

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W7125526879

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