Interferometric Radiometers

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SMOS

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SMOS L3WS products are daily composite maps of the collected SMOS L2 swath wind products for a specific day, provided with the same grid than the Level 2 wind data (SMOS L2WS NRT) but separated into ascending and descending passes.

This product is available the day after sensing from Ifremer, in NetCDF format.

Before using this dataset, please check the read-me-first note available in the Resources section below.

SMOS Wind Products Description Document

SMOS Wind Products ATBD

Read-me-first note for the release of SMOS Wind data products

SMOS Wind Data Service at Ifremer

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

The Atmospheric Carbon-dioxide Grating Spectrometer (ACGS) instrument is pushbroom spectrometer operating in NIR and SWIR bands which allows the measuring of CO2 mole fraction.

The available ACGS products have a temporal coverage between March 2017 and January 2020 (not all days included in the time frame):

<ul>
	<li>L1A DS: Sample Dark Calibration sample product</li>
	<li>L1A GL: Sample Glint Sample products</li>
	<li>L1A LS: Sample Lamp Calibration sample product</li>
	<li>L1A ND: Principal-Plane Nadir Sample product</li>
	<li>L1A ZS: Sample Z-Axis Solar Calibration Sample</li>
	<li>L1B CAL DS: Sample Dark Calibration product</li>
	<li>L1B CAL LS: Sample Lamp Calibration product</li>
	<li>L1B CAL ZS: Sample Z-Axis Solar Calibration product</li>
	<li>L1B SCI GL: Sample Glint Science product</li>
	<li>L1B SCI ND: Principal-Plane Nadir Science product</li>
</ul>

 

The Cloud Aerosol Polarization Imager (CAPI) is a pushbroom radiometer in VIS, NIR and SWIR bands for the observation of aerosols and clouds optical properties.

The CAPI products are available in a time range from July 2019 and January 2020 (not all days included in the time frame):

<ul>
	<li>L1A ND: Principal-Plane Nadir product</li>
	<li>L1B ND 1000M: Principal-Plane Nadir products at 1000 m resolution (1375 nm, 1640 nm)</li>
	<li>L1B ND 250M: Principal-Plane Nadir products at 250 m resolution (380 nm, 670 nm, 870 nm)</li>
	<li>L1B ND GEOQK: Principal-Plane Nadir georeferenced at 250 m resolution</li>
	<li>L1B ND GEO1K: Principal-Plane Nadir georeferenced at 1000 m resolution</li>
	<li>L1B ND OBC: Principal-Plane Nadir on-board calibrator product</li>
	<li>L2 ND CLM: Principal-Plane Nadir cloud flag product</li>
</ul>

TanSat AGCS and CAPI products

<div class="right-mobile-centered">
<figure class="right-mobile-centered"><a data-lightbox="AATSR Full Resolution image of the Iberian Peninsula from 28 October 2006. Land coverage is an RGB image from the 1.6, 0.87 and 0.55 µm radiance channels; Ocean coverage is from the 3.7 µm brightness temperature channel." data-title="AATSR Full Resolution image of the Iberian Peninsula from 28 October 2006. Land coverage is an RGB image from the 1.6, 0.87 and 0.55 µm radiance channels; Ocean coverage is from the 3.7 µm brightness temperature channel." href="/documents/20142/1363749/AATSR-Iberia-1.jpg"><img alt="AATSR Full Resolution image of the Iberian Peninsula from 28 October 2006" class="right-mobile-centered" src="/documents/20142/1363749/AATSR-Iberia-1-3-tm.jpg" /> </a> -
<figcaption style="text-align:center">AATSR Full Resolution land and ocean cover image of the Iberian Peninsula from 28 October 2006</figcaption>
</figure>
</div>

<div class="right-mobile-centered">
<figure class="right-mobile-centered"><a data-lightbox="AATSR Full Resolution image of the Iberian Peninsula from 28 October 2006. Land coverage is an RGB image from the 1.6, 0.87 and 0.55 µm radiance channels." data-title="AATSR Full Resolution image of the Iberian Peninsula from 28 October 2006. Land coverage is an RGB image from the 1.6, 0.87 and 0.55 µm radiance channels." href="/documents/20142/1363749/AATSR-Iberia-2.jpg"><img alt="AATSR Full Resolution image of the Iberian Peninsula from 28 October 2006" class="right-mobile-centered" src="/documents/20142/1363749/AATSR-Iberia-2-5-tm.jpg" style="margin-left:10px;" /> </a>

<figcaption style="text-align:center">AATSR Full Resolution land cover image of the Iberian Peninsula from 28 October 2006.</figcaption>
</figure>
</div>

The Envisat AATSR Level 1B Brightness Temperature/Radiance product (RBT) contains top of atmosphere (TOA) brightness temperature (BT) values for the infra-red channels and radiance values for the visible channels, on a 1-km pixel grid. Values for each channel and for the nadir and oblique views occupy separate NetCDF files within the Sentinel-SAFE format, along with associated uncertainty estimates. Additional files contain cloud flags, land and water masks, and confidence flags for each image pixel, as well as instrument and ancillary meteorological information.

This AATSR product [ENV_AT_1_RBT] in NetCDF format stemming from the 4th AATSR reprocessing, is a continuation of ERS ATSR data and a precursor of Sentinel-3 SLSTR data. It has replaced the former L1B product [ATS_TOA_1P] in Envisat format from the 3rd reprocessing. Users with Envisat-format products are recommended to move to the new Sentinel-SAFE like/NetCDF format products.&nbsp;

The 4th reprocessing of ENVISAT AATSR data was completed in 2022; the processing updates that have been put in place and the expected scientific improvements have been outlined in full in the <a href="https://earth.esa.int/documents/20142/37627/QA4EO-VEG-OQC-MEM-4538_User_Documentation_for__A_ATSR_4th_Reprocessing_Level_1.pdf" target="_blank">User Documentation for (A)ATSR 4th Reprocessing Products</a>.

Envisat AATSR L1B Brightness Temperature/Radiance [ENV_AT_1_RBT]

This dataset contains Landsat 3 Return Beam Vidicon (RBV) products, acquired by ESA by the Fucino ground station over its visibility mask. The data (673 scenes) are the result of the digitalization of the original 70 millimetre (mm) black and white film rolls.&nbsp;

The RBV instrument was mounted on board the Landsat 1 to 3 satellites between 1972 and 1983, with 80 metre resolution. Three independent co-aligned television cameras, one for each spectral band (band 1: blue-green, band 2: yellow-red, band 3: NIR), constituted this instrument.&nbsp;

The RBV system was redesigned for Landsat 3 to use two cameras operating in one broad spectral band (green to near-infrared; 0.505–0.750 µm), mounted side-by-side, with panchromatic spectral response and higher spatial resolution than on Landsat 1 and Landsat 2. Each of the cameras produced a swath of about 90 km (for a total swath of 180 km), with a spatial resolution of 40 m.&nbsp;

Landsat RBV

This collection provides access to the ALOS-1 PRISM (Panchromatic Remote-sensing Instrument for Stereo Mapping) OB1 L1C data acquired by ESA stations (Kiruna, Maspalomas, Matera, Tromsoe) in the&nbsp;<a href="https://earth.esa.int/eogateway/documents/20142/37627/Information-on-ALOS-AVNIR-2-PRISM-Products-for-ADEN-users.pdf" target="_blank">ADEN zone</a>, in addition to worldwide data requested by European scientists. The ADEN zone was the area belonging to the European Data node and covered both the European and African continents, a large part of Greenland and the Middle East.&nbsp;

The full mission archive is included in this collection, though with gaps in spatial coverage outside of the; with respect to the L1B collection, only scenes acquired in sensor mode, with Cloud Coverage score lower than 70% and a sea percentage lower than 80% are published:

<ul>
	<li>Time window: from 2006-08-01 to 2011-03-31</li>
	<li>Orbits: from 2768 to 27604</li>
	<li>Path (corresponds to JAXA track number): from 1 to 665</li>
	<li>Row (corresponds to JAXA scene centre frame number): from 310 to 6790.</li>
</ul>

The L1C processing strongly improve accuracy compared to L1B1 from several tenths of meters in L1B1 (~40 m of northing geolocation error for Forward views and ~10-20 m for easting errors) to some meters in L1C scenes (&lt; 10 m both in north and easting errors).

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

The most part of the products contains all the three views, but the Nadir view is always available and is used for the frame number identification. All views are packaged together; each view, in CEOS format, is stored in a directory named according to the JAXA view ID naming convention.

ALOS PRISM L1C

The Level 2C wind product of the Aeolus mission provides ECMWF analysis horizontal wind vectors at the geolocations of assimilated L2B HLOS wind components.

The L2C can therefore be described as an Aeolus-assisted horizontal wind vector product. The L2C is a distinct product, however the L2C and L2B share a common Earth Explorer file template, with the L2C being a superset of the L2B.

The L2C consists of extra datasets appended to the L2B product with information which are relevant to the data assimilation of the L2B winds.

Aeolus Level 2C assisted wind fields resulting from NWP Numerical Weather Prediction assimilation processing

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GOSAT (Greenhouse gases Observing Satellite) is a JAXA (Japan Aerospace Exploration Agency) mission within the GCOM (Global Change Observation Mission) program of Japan. The GOSAT mission goals call for the study of the transport mechanisms of greenhouse gases such as carbon dioxide (CO2) and methane (CH4).

SMOS L3 Daily Wind Speed

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