Name: Envisat ASAR WS Medium Resolution L1 [ASA_WSM_1P]
Creator: European Space Agency
License: https://earth.esa.int/eogateway/documents/20142/1564626/Terms-and-Conditions-for-the-use-of-ESA-Data.pdf

Envisat ASAR WS Medium Resolution L1 [ASA_WSM_1P]

Active Remote Sensing

ASAR

Imaging Radars

Envisat

Agriculture

Biosphere

Cryosphere

Land Surface

Oceans

Sea Ice

Snow and Ice

Soils

Terrestrial Hydrosphere

Topography

Vegetation

The strip-line product has been generated from Level 0 data collected when the instrument was in Wide Swath Mode. The product includes slant range to ground range corrections and covers a continuous area along the imaging swath.

It is intended to perform application oriented analysis on large scale phenomena over a wide region and for multi-temporal imaging.

This is the standard product for ASAR Wide Swath Mode.

The ASAR WS L0 full mission data archive has been bulk processed to Level 1 (ASA_WSM_1P) in Envisat format with the IPF-ASAR processor Version 6.03.

Spatial Resolution: 150 m slant range x 150 m azimuth.

European Space Agency, 2021, Envisat ASAR Wide Swath Medium Resolution L1 Product. IPF Version 6.03.

ASAR Auxiliary Data

ASAR Products Specification - Revision C

Envisat ASAR Sensor Performance, Products and Algorithms

Envisat ASAR Science and Applications

ASAR Product Handbook

ASAR Product Quality Disclaimer

ASAR Software Tools

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Utilisation of this data is subject to ESA's Earth Observation Terms and Conditions.

This collection is composed of a subset of ALOS-1 PRISM (Panchromatic Remote-sensing Instrument for Stereo Mapping) OB1 L1C products from the <a href="https://earth.esa.int/eogateway/catalog/alos-prism-l1c">ALOS PRISM L1C collection</a> (DOI: 10.57780/AL1-ff3877f) which have been chosen so as to provide a cloud-free coverage over Europe. 70% of the scenes contained within the collection have a cloud cover percentage of 0%, while the remaining 30% of the scenes have a cloud cover percentage of no more than 20%.

The collection is composed of PSM_OB1_1C EO-SIP products, with the PRISM sensor operating in OB1 mode with three views (Nadir, Forward and Backward) at 35 km width.

ALOS PRISM L1C European Coverage Cloud Free

The FSSCat collection provides hyperspectral data coverage over a number of locations around the world, as measured by the HyperScout 2 sensor.

The FSSCat hyperspectral data products are comprised of 50 spectral bands, covering a spectral range of 450 – 950 nm with a spectral resolution of 18 nm (at FWHM). Imagery is available with an along-track ground sampling distance (GSD) of 75 m. To ensure a high degree of radiometric accuracy, HyperScout 2 data are validated through comparison with Sentinel-2 data products.

The processing level of the data is L1C – calibrated top-of-atmosphere radiance, reflectance or brightness temperature. The raster type of the L1C data product is a GRID – a 2D or 3D raster where the (geo)location of the data is uniquely defined by the upper left pixel location of the raster and the pixel size of the raster, and the projection parameters of the raster (if georeferenced). The third dimension can e.g. be a spectral or third spatial dimension.

The L-1C VNIR data product includes a hyperspectral cube of TOA reflectance in the VNIR range, as well as relevant meta-data that adheres to EDAP's best practice guidelines. This product consists of georeferenced and ortho-rectified image tiles that contain spectral reflectance data at the top-of-the-atmosphere. Each image tile contains radiometrically corrected and ortho-rectified band images that are projected onto a map, as well as geolocation information and the coordinate system used. Additionally, each image pixel provides TOA spectral reflectance data in scaled integers, conversion coefficients for spectral radiance units, viewing and solar zenith and azimuth angles, and quality flags.

FSSCat products

In cooperation with CONAE (Comisión Nacional de Actividades Espaciales), ESA is launching an Announcement of Opportunity for the international scientific community to access data from the SAOCOM mission for science and EO-based applications development.

Announcement of Opportunity for SAOCOM

GEOSAT-2 Portugal coverage is a collection of 2021 data over the Portugal area, including islands. The available dataset has a cloud cover less than 10%, and is acquired up to 1m resolution with Geometric accuracy &lt;6m CE90 based on Copernicus DEM @10m.

<figure class="centered-mobile-centered"><a data-lightbox="GEOSAT-2-Portugal" data-title="GEOSAT-2 Portugal 2021 - Spatial Coverage of the Dataset" href="/documents/20142/4279060/GEOSAT2_Portugal_Coverage.png"><img alt="GEOSAT-2 Portugal 2021 - Spatial Coverage of the Dataset" src="/documents/20142/4279060/GEOSAT2_Portugal_Coverage_Smaller.jpg/3e2c84ea-17e7-c8b6-ed57-b079e1851142?t=1677155961453&amp;download=true" style="margin: 10px;" /></a>

<figcaption style="text-align: center;">GEOSAT-2 Portugal 2021 - Spatial Coverage of the Dataset</figcaption>
</figure>

The following product types are available:

<ul>
	<li>Pan-sharpened (4 bands, 321 Natural Colours or 432 False Colours): A four-band image, resulting from adding the information of each multispectral band to the panchromatic band. The fusion does not preserves all spectral features of the multispectral bands, so it should not be used for radiometric purposes. Resolution 1m; Bands: All, R-G-B or Ni-R-G</li>
	<li>Bundle: Panchromatic (1m resolution) + Multispectral bands (4m resolution): five-band image containing the panchromatic and multispectral products packaged together, with band co-registration.</li>
</ul>

The available processing level is L1C orthorectified: a calibrated and radiometrically corrected product, manually orthorectified and resampled to a map grid.

<table class="eogtable">
	<tbody>
		<tr class="eogtable-heading">
			<td rowspan="2">Product Type</td>
			<td colspan="2">Processing Level and Spatial Resolution</td>
		</tr>
		<tr class="eogtable-heading">
			<td>L1B (native)</td>
			<td>L1C (ortho)</td>
		</tr>
		<tr>
			<td>Pan-sharpened</td>
			<td>1.0m</td>
			<td>1.0m</td>
		</tr>
		<tr>
			<td>Bundle (PAN+MS)</td>
			<td>1.0m (P), 4.0m (MS)</td>
			<td>1.0m (P), 4.0m(MS)</td>
		</tr>
	</tbody>
</table>

GEOSAT-2 Portugal Coverage 2021

A large number of European cities are covered by this dataset; for each city you can find one or more Cartosat-1 ortho image products and one or more Euro-Maps 3D DSM tiles clipped to the extent of the ortho coverage.

The Euro-Maps 3D DSM is a homogeneous, 5 m spaced Digital Surface Model semi-automatically derived from 2.5 m Cartosat-1 in-flight stereo data with a vertical accuracy of 10 m. The very detailed and accurate representation of the surface is achieved by using a sophisticated and well adapted algorithm implemented on the basis of the Semi-Global Matching approach. The final product includes several pixel-based quality and traceability layers:

<ul>
	<li>The dsm layer (*_dsm.tif) contains the elevation heights as a geocoded raster file</li>
	<li>The source layer (*_src.tif) contains information about the data source for each height value/pixel</li>
	<li>The number layer (*_num.tif) contains for each height value/pixel the number of IRS-P5 Cartosat-1 stereo pairs used for the generation of the DEM</li>
	<li>The quality layer (*_qc.tif) is set to 1 for each height/pixel value derived from IRS-P5 Cartosat-1 data and which meets or exceeds the product specifications</li>
	<li>The accuracy vertical layer (*_acv.tif) contains the absolute vertical accuracy for each quality controlled height value/pixel.</li>
</ul>

The ortho image is a Panchromatic image at 2.5 m resolution. The following table defines the offered product types.

<table class="eogtable">
	<tbody>
		<tr class="eogtable-heading">
			<td>EO-SIP product type</td>
			<td>Description</td>
		</tr>
		<tr>
			<td>PAN_PAM_3O</td>
			<td>IRS-P5 Cartosat-1 ortho image</td>
		</tr>
		<tr>
			<td>DSM_DEM_3D</td>
			<td>IRS-P5 Cartosat-1 DSM</td>
		</tr>
	</tbody>
</table>

European Cities: Cartosat-1 Euro-Maps 3D

Earth Observation Satellite

TOPEX/POSEIDON

JPSS-2

JPSS-3

JPSS-4

Swarm-B

Swarm-A

Swarm-C

FY-3B

Nimbus-4

CloudSat

CALIPSO

GOSAT-2

GOSAT-1

NOAA-20

TIROS

TIROS-N

GMS-5

GRACE SCA

GRACE LRR

PRARE

Spectrometers

Interferometric Radiometers

Interferometers

GRACE INTERFEROMETER

GRACE ACC

HRPAN

SAPHIR

ATMS

TRSR

SSTI

GNSS

Glaciers and Ice Sheets

Frozen Ground and Permafrost

Surface Radiative Properties

Surface Thermal Properties

Landscape

Erosion and Sedimentation

Geomorphic Landforms and Processes

Soil Moisture

Soil Texture

Soil Classification

Organic Matter

Soil Erosion

Carbon

Permafrost

Land Use and Land Cover

Upcoming

Current

Past

Conference

Meeting

Training

Workshop

Sessions

Data Innovation and Science Cluster

EO Science for Society

National

Space Situational Awareness

Support To Science Element

Fast Registration with approval (Restrained)

Procedures requiring evaluation

External Data (Restrained)

Fast Registration with immediate access (Open)

EO Sign In Authentication (Open)

Open access (Open)

Project Proposal (Restrained)

Data Service Request (Restrained)

External Data

Fast Registration with Approval

EO Sign In Authentication

Open Access

Data Service Request

Fast Registration with immediate access

Project Proposal

Restrained Data

Product Handbook

Campaign Report

Newsletter

Availability Report

Quality Report

Algorithms Theoretical Baseline Document

Detailed Processing Model

Frequently Asked Questions

Input Output Data Definition

Product Specifications

Product Readme Note

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Envisat ASAR Wide Swath Medium Resolution Image

Envisat ASAR WS Medium Resolution L1 [ASA_WSM_1P]

Envisat ASAR Wide Swath Medium Resolution Image

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