From Geoscience Australia
JSON RDF ISO19115-3 XML

Analysis Ready Data Sensitivity Analyses

ARCHIVED

Created 14/01/2025

Updated 14/01/2025

JSON RDF ISO19115-3 XML

CEOS Analysis Ready Data for Land (CARD4L) are satellite data that have been processed to a minimum set of requirements and organized into a form that allows immediate analysis with a minimum of additional user effort and interoperability both through time and with other datasets [1]. In this paper, key input data (e.g. aerosol optical depth, precipitable water, BRDF parameters) needed for atmospheric and BRDF corrections of Landsat data are identified and a sensitivity analysis is conducted using outputs of a physics based atmospheric and BRDF model. The results show that aerosol impacts more on the visible bands where the average variation of reflectance could reach 0.05 of reflectance unit. The variation over dark targets can be much higher so that it is a critical parameter for aquatic applications. By contrast, precipitable water (water vapor in the rest of the paper) only impacts the near-infrared (NIR) and shortwave (SWIR) bands and the extent of change is much smaller. BRDF parameters impact time series most on winter and summer images of highly anisotropic areas and when they are normalized to 45º solar angle. Different BRDF levels for different spectrum ranges not only impact the magnitude of reflectance, but also the signature for these areas. It seems that it is necessary to normalize surface BRDF to ensure time series consistency of the Landsat ARD product. Abstract presented at 2019 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)

Files and APIs

Tags

Additional Info

Field Value
Title Analysis Ready Data Sensitivity Analyses
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/27fc90e7-504c-4fb6-b4c7-94ee3276105f
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 08/04/2019
Geospatial Coverage {"type": "Polygon", "coordinates": [[[112.0, -44.0], [154.0, -44.0], [154.0, -9.0], [112.0, -9.0], [112.0, -44.0]]]}
Data Portal data.gov.au

Data Source

This dataset was originally found on data.gov.au "Analysis Ready Data Sensitivity Analyses". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/analysis-ready-data-sensitivity-analyses

Original dataset
Dataset copies

No duplicate datasets found.