Data

Geoscience Australia Landsat 9 OLI TIRS Analysis Ready Data Collection 3

Geoscience Australia
Alam, I. ; Chopra, A. ; Gray, D. ; Hooke, J. ; Li, F. ; Ly, L. ; Mettes, J. ; Miller, J. ; Norton, A. ; OHehir, A.
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://pid.geoscience.gov.au/dataset/ga/148693&rft.title=Geoscience Australia Landsat 9 OLI TIRS Analysis Ready Data Collection 3&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/148693&rft.publisher=Commonwealth of Australia (Geoscience Australia)&rft.description=The United States Geological Survey's (USGS) Landsat satellite program has been capturing images of the Australian continent for more than 30 years. This data is highly useful for land and coastal mapping studies.In particular, the light reflected from the Earth’s surface (surface reflectance) is important for monitoring environmental resources – such as agricultural production and mining activities – over time.We make accurate comparisons of imagery acquired at different times, seasons and geographic locations. However, inconsistencies can arise due to variations in atmospheric conditions, sun position, sensor view angle, surface slope and surface aspect. These are reduced or removed to ensure the data is consistent and can be compared over time.The Geoscience Australia Landsat 9 OLI TIRS Analysis Ready Data Collection 3 contains three sub-products that provide corrections or attribution information:- DEA Surface Reflectance NBAR* (Landsat 9)- DEA Surface Reflectance NBART** (Landsat 9)- DEA Surface Reflectance OA*** (Landsat 9)Note: DEA produces NBAR as part of the Landsat ARD, this is available in the National Computing Infrastructure environment only and is not available in the DEA cloud environments.The resolution is a 30 m grid based on the USGS Landsat Collection 2 archive, or 15 m for the panchromatic band. This data forms part of the DEA Collection 3 archive. * Nadir corrected Bi-directional reflectance distribution function Adjusted Reflectance (NBAR)** Nadir corrected Bi-directional reflectance distribution function Adjusted Reflectance with terrain illumination correction (NBART)*** Observation Attributes (OA)Maintenance and Update Frequency: asNeededStatement: This product is derived from the USGS Landsat Level 1 Collection 2 archive.- The Moderate Resolution Imaging Spectroradiometer (MODIS) MCD43A1 Version 6 Bidirectional Reflectance Distribution Function and Albedo (BRDF/Albedo) Model Parameters dataset was provided by the National Aeronautics and Space Administration (NASA). It was produced daily using 16 days of Terra and Aqua MODIS data at 500 m resolution. - The ozone data was provided by Environment Canada. - The Aerosol Optical Thickness data was provided by the Commonwealth Scientific and Industrial Research Organisation (CSIRO). - The Precipitable Water for Entire Atmosphere data was provided by the National Oceanic and Atmospheric Administration (NOAA) / Earth System Research Laboratory (ESRL) / Physical Sciences Division (PSD).- The baseline Digital Surface Model (DSM) data produced from the Shuttle Radar Topography Mission (SRTM) was provided by the National Geospatial-Intelligence Agency (NGA). - Level 1 Collection 2 data was provided by the United States Geological Survey (USGS)'s Earth Resources Observation and Science (EROS) Center.&rft.creator=Alam, I. &rft.creator=Chopra, A. &rft.creator=Gray, D. &rft.creator=Hooke, J. &rft.creator=Li, F. &rft.creator=Ly, L. &rft.creator=Mettes, J. &rft.creator=Miller, J. &rft.creator=Norton, A. &rft.creator=OHehir, A. &rft.date=2023&rft.coverage=westlimit=112; southlimit=-44; eastlimit=154; northlimit=-9&rft.coverage=westlimit=112; southlimit=-44; eastlimit=154; northlimit=-9&rft_rights=Any&rft_rights=Any&rft_rights=© Commonwealth of Australia (Geoscience Australia) 2023&rft_rights=Australian Government Security Classification System&rft_rights=https://www.protectivesecurity.gov.au/Pages/default.aspx&rft_rights=WWW:LINK-1.0-http--link&rft_rights=Australian Government Security Classification System&rft_subject=geoscientificInformation&rft_subject=DEA – Digital Earth Australia&rft_subject=DEA&rft_subject=observation attributes&rft_subject=satellite imagery&rft_subject=landsat&rft_subject=surface reflectance&rft_subject=Digital Earth Australia&rft_subject=analysis ready data&rft_subject=earth observation&rft_subject=Earth Sciences&rft_subject=Published_External&rft.type=dataset&rft.language=English Access the data
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Brief description

The United States Geological Survey's (USGS) Landsat satellite program has been capturing images of the Australian continent for more than 30 years. This data is highly useful for land and coastal mapping studies.

In particular, the light reflected from the Earth’s surface (surface reflectance) is important for monitoring environmental resources – such as agricultural production and mining activities – over time.

We make accurate comparisons of imagery acquired at different times, seasons and geographic locations. However, inconsistencies can arise due to variations in atmospheric conditions, sun position, sensor view angle, surface slope and surface aspect. These are reduced or removed to ensure the data is consistent and can be compared over time.

The Geoscience Australia Landsat 9 OLI TIRS Analysis Ready Data Collection 3 contains three sub-products that provide corrections or attribution information:
- DEA Surface Reflectance NBAR* (Landsat 9)
- DEA Surface Reflectance NBART** (Landsat 9)
- DEA Surface Reflectance OA*** (Landsat 9)

Note: DEA produces NBAR as part of the Landsat ARD, this is available in the National Computing Infrastructure environment only and is not available in the DEA cloud environments.

The resolution is a 30 m grid based on the USGS Landsat Collection 2 archive, or 15 m for the panchromatic band. This data forms part of the DEA Collection 3 archive.

* Nadir corrected Bi-directional reflectance distribution function Adjusted Reflectance (NBAR)
** Nadir corrected Bi-directional reflectance distribution function Adjusted Reflectance with terrain illumination correction (NBART)
*** Observation Attributes (OA)

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Maintenance and Update Frequency: asNeeded
Statement:
This product is derived from the USGS Landsat Level 1 Collection 2 archive.
- The Moderate Resolution Imaging Spectroradiometer (MODIS) MCD43A1 Version 6 Bidirectional Reflectance Distribution Function and Albedo (BRDF/Albedo) Model Parameters dataset was provided by the National Aeronautics and Space Administration (NASA). It was produced daily using 16 days of Terra and Aqua MODIS data at 500 m resolution. 
- The ozone data was provided by Environment Canada. 
- The Aerosol Optical Thickness data was provided by the Commonwealth Scientific and Industrial Research Organisation (CSIRO). 
- The Precipitable Water for Entire Atmosphere data was provided by the National Oceanic and Atmospheric Administration (NOAA) / Earth System Research Laboratory (ESRL) / Physical Sciences Division (PSD).
- The baseline Digital Surface Model (DSM) data produced from the Shuttle Radar Topography Mission (SRTM) was provided by the National Geospatial-Intelligence Agency (NGA). 
- Level 1 Collection 2 data was provided by the United States Geological Survey (USGS)'s Earth Resources Observation and Science (EROS) Center.

Notes

Purpose
This product takes Landsat 9 imagery captured over the Australian continent and corrects for inconsistencies caused by atmospheric conditions, sun position, sensor view angle, surface slope and surface aspect. The result is accurate and standardised surface reflectance data, which is instrumental in identifying and quantifying environmental change. The imagery is captured using the Operational Land Imager (OLI) and Thermal Infra-Red Scanner (TIRS) sensors aboard Landsat 9. Only the OLI data is included in this product, while the TIRS data is used in processing, particularly in identification of clouds. This product is a single, cohesive Analysis Ready Data (ARD) package, which allows you to analyse surface reflectance data as is, without the need to apply additional corrections.

Created: 18 08 2023

Issued: 22 08 2023

Data time period: 2021-10-31

This dataset is part of a larger collection

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154,-9 154,-44 112,-44 112,-9 154,-9

133,-26.5

text: westlimit=112; southlimit=-44; eastlimit=154; northlimit=-9

Subjects
DEA | DEA – Digital Earth Australia | Digital Earth Australia | Earth Sciences | Published_External | analysis ready data | earth observation | geoscientificInformation | landsat | observation attributes | satellite imagery | surface reflectance |

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uri : https://maps.dea.ga.gov.au/

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