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Envisat MERIS Reduced Resolution - Level 2 [MER_RR__2P/ME_2_RRG]

How To Access Data

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  1. Go to the Dissemination Service
  2. Find the product you want via a map using the catalogue search
  3. Register or log in to EO Sign In
  4. Download.
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The dissemination service provides the latest reprocessed version (v4) of the MERIS Full Resolution (FR) and Reduced Resolution (RR) Level 1 and Level 2 data. The data is collection based and allows data browse and download through the treeview as well as via geographical catalogue search based on area of interest and metadata. Data download is available via HTTPS, including bulk download functionality. For internal ESA users the ESAAD account can be used.

Access to ftps:// is available via common FTP clients using implicit FTP over TLS and your own EO Sign In credentials. For internal ESA users the ESAAD account cannot be used.

New users can register an account on EO Sign In. For further information about the EO Sign In Service you can visit TellUs.

Should you need support to access the data, please contact EOHelp.


MERIS RR Level 2 is a Reduced Resolution (RR) Geophysical product for Ocean, Land and Atmosphere. Each MERIS Level 2 geophysical product is derived from a MERIS Level 1 product and auxiliary parameter files specific to the MERIS Level 2 processing.

The MERIS RR Level 2 product has a Sentinel 3-like format starting from the 4th reprocessing data released to users in July 2020.

The data package is composed of NetCDF 4 files containing instrumental and scientific measurements, and a Manifest file, which contains metadata information related to the description of the product.

A Level 2 product is composed of 64 measurement files containing mainly: 13 files containing Water-leaving reflectance, 13 files containing Land surface reflectance and 13 files containing the TOA reflectance (for all bands except those dedicated to measurement of atmospheric gas - M11 and M15), and several files containing additional measurement on Ocean, Land and Atmospheric parameters.

The Auxiliary data used are listed in the Manifest file associated to each product.

MERIS was operating continuously on the day side of the Envisat orbit (descending track). RR data was acquired over 43.5 minutes in each orbit, i.e. 80% of the descending track.



Digital Object Identifier (DOI):
Spatial coverage:
90 N, -90 S, -180 W, 180 E
Temporal coverage:
2002-04-29 - 2012-04-08
Date of launch:
Mission status:
Orbit height:
800 km
Orbit type:
Swath width:
5 - 1150 km
MERIS RR - 1040 m across track / 1160 m along track


Level 2


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



European Space Agency, 2020, MERIS Reduced Resolution L2 Product. 4th Reprocessing.


Auxiliary Data

MERIS Auxiliary Data

Auxiliary Data

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Product Specifications

MERIS Sentinel 3-like L1/L2 Product Format Specification

Product Specifications

Product Specifications

MERIS 4th Data Reprocessing Documentation

Product Specifications

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More MERIS Documents


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MERIS Software and Tools


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Description of Envisat Mission

Envisat Mission

Description of Envisat Mission

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Description of MERIS Instrument

MERIS Instrument

Description of MERIS Instrument

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ESA Earth Observation User Services Portal

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ESA Earth Observation User Services Portal

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