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  • News - General News

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    EarthCARE infographic

    Learn about ESA’s upcoming cloud, aerosol and radiation explorer mission – EarthCARE – in our latest infographic.

  • News - General News

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    What are the next Earth Explorers?

    ESA have launched five missions in the Earth Explorers programme – GOCE, CryoSat, SMOS, Swarm, and Aeolus – each of which is dedicated to observing an aspect of Earth’s system.

  • News - Events and Proceedings

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    Highlights from Living Planet Symposium

    As remote sensing scientists and data-users from around the world converged at the Living Planet Symposium (LPS) in Bonn recently, a common thread was evident in many scientific sessions and meetings – the right environmental data can accelerate our understanding of the rapid changes in Earth’s system.

  • News - General News

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    What is Aeolus VRE?

    Learn more about the The Aeolus Virtual Research Environment (VRE), the latest extension to the VirES for Aeolus service

  • News - Success Stories

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    How Envisat helped to shape global understanding of Earth’s systems

    Twenty years have passed since a ground-breaking European spacecraft designed to deliver unprecedented insight into the planet’s changing environment was lofted into orbit.

  • News - Success Stories

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    Ship trails in the Bay of Biscay observed using PROBA-V imagery

    Ship trails have been perceived as convincing evidence of aerosol-cloud interaction. Ship emissions have been proven to contribute by about 1.9% and 2.9% to the increase in the global total and fine-mode aerosol optical thickness (AOT) respectively over a five year period (Peters et al. 20212).

  • Event - Workshop

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    The 1st workshop of ACIX-III Land, Aqua and CMIX-II

    The 1st workshop of ACIX-III Land, Aqua and CMIX-II will be held on 20-21 June 2022 in ESA/ESRIN (Frascati, Italy), where coordinators and participants will discuss and define the implementation protocols.

  • Event - Workshop

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    Envisat Validation Workshop 2002

    The workshop covered various aspects of validation of the Envisat instruments.

  • News - Success Stories

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    Askos campaign validates Aeolus data

    From July to September 2021, the European Space Agency (ESA) organised the Joint Aeolus Tropical Atlantic Campaign (JATAC) in Cape Verde.

  • Data - Data Description

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    Aeolus L2A Aerosol/Cloud optical product

    The Level 2A aerosol/cloud optical products of the Aeolus mission include: Geo-located consolidated backscatter and extinction profiles, Backscatter-to-extinction coefficient, LIDAR ratio, scene classification, Heterogeneity index Attenuated backscatter signals. Resolution - Horizontal resolution of L2A optical properties at observation scale (~87 km); Exceptions are group properties (horizontal accumulation of measurements from ~3 km to ~87 km) and attenuated backscatters (~3 km); Note: the resolution of "groups" in the L2A can only go down to 5 measurements at the moment, i.e. ~15 km horizontal resolution. This could be configured to go to 1 measurement - Vertical resolution 250-2000 m (Defined by Range Bin Settings ).

  • News - Success Stories

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    1 km resolution aerosol optical thickness retrieved from PROBA-V

    The ESA SPAR@MEP project aims to deliver a long-term data record (LTDR) of aerosol optical properties and surface reflectance from SPOT-VGT and PROBA-V observations.

  • Document - Product Document

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    EarthCARE-ATLID-L1-Product-Definitions.pdf

    Description of the format and content of the L1 Nominal products for the EarthCARE ATLID processor.

  • News - Operational News

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    A Guide to Aeolus Range Bin Settings

    After almost two years in space, Aeolus' near-real time observations have been assimilated into the Numerical Weather Prediction models of several European meteorological services, and have proven crucial during the COVID-19 pandemic, which led to a sharp decrease in meteorological observations.

  • Data - Data Description

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    AVHRR Level-1B Local Area Coverage Imagery

    This collection is composed of AVHRR L1B products (1.1 km) reprocessed from the NOAA POES and Metop AVHRR sensors data acquired at the University of Dundee and University of Bern ground stations and from the ESA and University of Bern data historical archive. The product format is the NOAA AVHRR Level 1B that combines the AVHRR data from the HRPT stream with ancillary information like Earth location and calibration data which can be applied by the user. Other appended parameters are time codes, quality indicators, solar and satellite angles and telemetry. Two data collections cover Europe and the neighbouring regions in the period of 1 January 1981 to 31 December 2020 and the acquired data in the context of the 1-KM project in the ‘90s. During the early 1990’s various groups, including the International Geosphere-Biosphere Programme (IGBP), the Commission of the European Communities (CEC), the Moderate Resolution Imaging Spectrometer (MODIS) Science Team and ESA concluded that a global land 1 KM AVHRR data set would have been crucial to study and develop algorithms for several land products for the Earth Observing System. USGS, NOAA, ESA and other non-U.S. AVHRR receiving stations endorsed the initiative to collect a global land 1-km multi-temporal AVHRR data set over all land surfaces using NOAA's TIROS "afternoon" polar-orbiting satellite. On 1 April 1992, the project officially began up to the end of 1999 with the utilisation of 23 stations worldwide plus the NOAA local area coverage (LAC) on-board recorders. The global land 1-km AVHRR dataset is composed of 5 channels, raw AVHRR dataset at 1.1 km resolution from the NOAA-11 and NOAA-14 satellites covering land surfaces, inland water and coastal areas.   Global Land 1 km AVHRR Data Set Project HRPT Ground Station Network (as of 1 April 1992) and Acquisition Areas for LAC Recorded Data Spatial coverage: Check the spatial coverage of the collection on a map available on the Third Party Missions Dissemination Service: AVHRR L1B 1.1 KM AVHRR L1B LAC Out-of-Europe

  • News - Operational News

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    Aeolus set for Instrument Telescope Refocussing exercise

    Aeolus's telescope requires periodic collimation and refocussing. To this end, the Instrument Telescope Refocussing activity aims to improve the radiometric performance of the Atmospheric Laser Doppler Instrument's telescope, ALADIN.

  • News - Success Stories

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    Around the world in eight balloons with Strateole-2

    Strateole-2 is a French-US project supported by ESA that uses CNES superpressure balloons drifting around the globe to study the climate processes in the Tropical Tropopause Layer (TTL) and the lower stratosphere, helping Aeolus validation activities along the way.

  • News - Success Stories

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    Forty years of heritage data highlight warming European lakes

    In the last decade, climate change has taken centre stage in both the public and scientific arenas, as increasingly extreme weather and human impact on the environment have become more apparent.

  • Activity - Quality

    Aeolus DISC

    The Aeolus DISC is the core element in ESA's data quality framework for the Aeolus mission, comprised of an international expert consortium to study and improve the data quality of Aeolus products.

  • Data - Data Description

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    Envisat MERIS Full Resolution - Level 1 [MER_FRS_1P/ME_1_FRG]

    The MERIS Level 1 Full Resolution (FR) product contains the Top of Atmosphere (TOA) upwelling spectral radiance measures. The in-band reference irradiances for the 15 MERIS bands are computed by averaging the in-band solar irradiance of each pixel. The in-band solar irradiance of each pixel is computed by integrating the reference solar spectrum with the band-pass of each pixel. The MERIS FR Level 1 product has Sentinel 3-like format starting from the 4th reprocessing data released to users in July 2020. Each measurement and annotation data file is in NetCDF 4. The Level 1 product is composed of 22 data files: 15 files containing radiances at each band (one band per file), accompanied by the associated error estimates, and 7 annotation data files. The 15 sun spectral flux values provided in the instrument data file of the Level 1 products are the in-band reference irradiances adjusted for the Earth-sun distance at the time of measurement. The band-pass of each pixel is derived from on-ground and in-flight characterisation via an instrument model. The values "Band wavelength" and "Bandwidth" provided in the Manifest file of the Level 1b products are the averaged band-pass of each pixel over the instrument field of view. Auxiliary data are also listed in the Manifest file associated to each product. The Level 1 FR product covers the complete instrument swath. The product duration is not fixed and it can span up to the time interval of the input Level 0 (for a maximum of 20 minutes). Thus the estimated size of the Level 1 FR is dependent on the start/stop time of the acquired segment. During the Envisat mission, acquisition of MERIS Full Resolution data was subject to dedicated planning based on on-demand ordering and coverage of specific areas according to operational recommendations and considerations. See yearly and global density maps to get a better overview of the MERIS FR coverage.

  • Data - Data Description

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    Envisat AATSR Level 3 LST products from UOL [ATS_LST_3P]

    The recommended AATSR Level 3 products for Land Surface Temperature (LST) applications are the Level 3 products that have been produced by the University of Leicester (UOL). These Level 3 products have been generated from Level 2 UOL LST products which use the same LST retrieval method as the Gridded Surface Temperature (ATS_NR__2P) products. However, significantly improved auxiliary data sets for land cover, green vegetation fraction and total column water vapour are also applied (see "Available Resources" section below for details). In addition to LST, the UOL LST products contain the aforementioned auxiliary information, LST uncertainty estimates, NDVI and quality control flags. The Level 3 products are provided in NetCDF-4 format, and have been generated from the 3rd reprocessed AATSR dataset by the LST project team at the University of Leicester funded by ESA and NCEO.Further documentation is available via the NEODC website.

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