EPS-SG User Test Data

To support the user community in their preparations for receiving and processing the EPS-SG data, test data are being made available.

Test data are essential for helping users to carry out system testing and for the development of processing software.

In order for users to prepare for EPS-SG, format familiarisation test data packages have been prepared and are ready for release. A Product Format Specification document describing the content of each product is also released with each test data package.

Format specifications common to all EPS-SG products are available in the EPS-SG Generic Product Format Specification document.

The V1 test data for the following observation missions are now available:

MWS L1B and L2
RO L1B
IASI-NG L1D
VII L1B and L2
3MI L1B
Scatterometer

 

Satellite A — Microwave Sounder (MWS)

The MWS (Microwave Sounder) has a direct heritage from the microwave instruments AMSU-A (Advanced Micro-wave Sounding Unit A) and MHS (Micro-wave Humidity Sounder) on board EPS and NOAA satellites. Its primary objective is to support Numerical Weather Prediction at regional and global scales by providing information on atmospheric temperature and water vapour profiles in clear and cloudy conditions.

Test data description

Figure 1
 
Figure 1: MWS One full orbit, test data example

The test data are available here:
ftp://ftp.eumetsat.int/pub/OPS/out/test-data/Test-data-for-External-Users/EPS-SG/MWS_Test_Data/

The Level 1B test data (EPS-SG_MWS-1B-RAD.nc.gz) contain the most important variables related to geolocation and calibration processing. These are listed according to the specifications given in the EPS-SG MWS Level 1B Product Format Specification document, made available along with the test data. The MWS L1B product, in netCDF format, is generated using the MWS L1B In-house Prototype Processor (IPP) developed at EUMETSAT.

The Level 2 test data (EPS-SG_MWS-02-TPW.nc.gz) are generated with the MWS L2 In-house Prototype Processor (IPP) using L1B data as input. The L2 data, in netCDF format, contain the geolocated total precipitable water (TPW) over water-surfaces, and limb-corrected brightness temperatures for all 24 MWS channels. The format and further content are described in the EPS-SG MWS Level 2 Product Format Specification document, made available along with the test data.

These test data are intended for format familiarisation and system testing.

Documentation available via the above FTP link:

EPS-SG MWS Level 1B Product Format Specification

EPS-SG MWS Level 2 Product Format Specification

Readme file

Satellite A — Radio Occulation (RO)

The Radio Occultation (RO) instrument has a direct heritage from GRAS flying on Metop. Its main objective is to support Numerical Weather Prediction (NWP) and climate monitoring, by providing measurements of bending angle profiles in the troposphere and the stratosphere with a high vertical resolution and accuracy.

Test data description

The test data are available here:
ftp://ftp.eumetsat.int/pub/OPS/out/test-data/Test-data-for-External-Users/EPS-SG/RO_Test_Data/
(EPS-SG_RO_L1B.tar.gz)

In this test dataset, two full orbits are contained in 194 files in netcdf format. The information on all the variables in the output files is available in the EPS-SG RO Level 1B Product Format Specification document, made available along with the test data.

The RO L1B product is generated using the EUMETSAT in-house prototype.

These test data are intended for format familiarisation and system testing.

Documentation available via FTP:

EPS-SG RO Level 1B Product Format Specification

Readme file

Satellite A — IASI-NG

IASI-NG (Infrared Atmospheric Sounder Interferometer — New Generation) has a direct heritage from the IASI instrument on board EUMETSAT Polar System (EPS) satellites. IASI-NG will ensure continuity to EPS Infrared Atmospheric Sounder mission, with improved spectral and radiometric performances.

Test data description

The test data are available here:

ftp://ftp.eumetsat.int/pub/OPS/out/test-data/Test-data-for-External-Users/EPS-SG/IASI-NG_Test_Data_L1D_V2/

The L1D test data set is generated by the IASI-NG L1D IPP (In-house Prototype Processor) using simulated L1C test data and auxiliary data as input. The auxiliary data contains the IASI-NG eigenvectors and the static parameters to configure the Principal Component Compression, the format of which is according to the EPS-SG — IASI-NG Level 1D Auxiliary Data Specification document available with this release.

The L1D test data contain in netCDF format the same information as the L1C data, but the radiances are compressed using Principal Component scores. The data format is explained in the document EPS-SG IASI-NG L1D Product Format Specification (version 3E), available along with the test data. Format specifications common to all EPS-SG products are now available in the EPS-SG Generic Product Format Specification document.

The data covers three full orbits and two partial orbits.

Corresponding data file is IASI-NG-L1D_V2.tar.gz and associated checksum file is IASI-NG-L1D_V2.md5

These test data are intended for format familiarisation and system testing.

Documentation available via FTP

EPS-SG IASI-NG L1D Product Format Specification
EPS-SG — IASI-NG Level 1D Auxiliary Data Specification
EPS-SG Generic Product Format Specification
Readme file

Earlier releases of IASI-NG user familiarisation test data

February 2020

Test data description

The test data are available here:
ftp://ftp.eumetsat.int/pub/OPS/out/test-data/Test-data-for-External-Users/EPS-SG/IASI-NG_Test_Data/

The IASI-NG L1D test data set is generated using the IASI-NG L1D IPP (In-house Prototype processor) using L1C test data and auxiliary data as input. The auxiliary data (IAS-1D-AUX_EIGV and IAS_1D_AUX_PCCC) contain the IASI-NG eigenvectors and the static parameters to configure the Principal Component Compression.

The L1D test data contain in netCDF format the same information as the L1C data, but the radiances are compressed by using Principal Components. The data format is explained in the Product Format Specification document, made available along with the test data.

These test data are intended for format familiarisation and system testing.

Documentation available via FTP:

Satellite A — VII (METimage)

The EPS-SG Visible Infrared Imager (METimage) will provide continuity to the AVHRR series on board the Metop and NOAA satellites, and VIIRS on board NOAA satellites.

Test data description

The test data are available here:

L1: ftp://ftp.eumetsat.int/pub/OPS/out/test-data/Test-data-for-External-Users/EPS-SG/VII_Test_Data/
L2: ftp://ftp.eumetsat.int/pub/OPS/out/test-data/Test-data-for-External-Users/EPS-SG/VII_L2_Test_Data/

The METimage L1B test data, in netCDF format, covers a quarter of an orbit of data and is generated using the L1B Ground Processor Prototype (GPP) V1.2.1. The content and format of these products are in line with the specifications in the VII L1B Product Format Specification document, made available along with the test data.

The test data consist of six granules. Each granule has a duration of 5 min, 3144 pixels across track and 4200 pixels along track.

The METimage L2 test data are generated using the in-house Multi Satellite Prototype Processor as an example for nominal Near Real-Time global/regional processing of VII L2 products.

The data, in netCDF format, comprise the following:

L2 product containing:

  • Total Precipitable Water product (from visible/near-IR observations).
  • Total Precipitable Water product (IR observations).
  • Cloud optical and microphysical properties, cloud Liquid/Ice Water Path (LWP, IWP) and Volcanic Ash (VA) product.
  • Atmospheric Motion Vector (AMV) product.

Corresponding file is VII-L2.tar.gz and associated checksum file is VII-L2.md5.

L2 Cloud Mask product.

Corresponding file is VII-L2CM.tar.gz and associated checksum file is VII-L2CM.md5.

These test data are intended for format familiarisation and system testing.

Documentation available via FTP:

Satellite A — 3MI

Figure 2
 
Figure 2: Top of the Atmosphere (TOA) reflectance factor values from the simulated 3MI L1B Test Dataset. The values are shown here for 410 nm channel for one view (View 1).

The EPS-SG Multi-Viewing Multi-Channel Multi-Polarisation Imaging (3MI) instrument is a passive optical radiometer dedicated primarily to aerosol characterisation for applications in climate monitoring, atmospheric chemistry, and Numerical Weather Prediction (NWP).

Test data description

The 3MI Level 1B test data are available here:
ftp://ftp.eumetsat.int/pub/OPS/out/test-data/Test-data-for-External-Users/EPS-SG/3MI_Test_Data/

The L1B test data are generated from L1B1 data using the L1B Ground Processor Prototype V2.2 (GPP V2.2) which has been developed within a cooperation between EUMETSAT and CNES. The data up to L1B1 data were generated using the v2.1.3 IDS/GPP from ESA.

The L1B top of atmosphere (TOA) spectral radiance in reflectance factor unit is available to users in netCDF format. The test data are accompanied by a Product Format Specification document (PFS), which explains the numbering of the channels and the acquisition order as well as the product content.

These test data are intended for format familiarisation and system testing.

Documentation available via FTP:

Satellite B — Scatterometer (SCA)

The EPS-SG SCA has heritage from the ASCAT instrument onboard the Metop satellites.

Test data description

The test data are available here:
ftp://ftp.eumetsat.int/pub/OPS/out/test-data/Test-data-for-External-Users/EPS-SG/SCA_Test_Data/

The SCA L1B test data are generated using the SCA-GPP (SCA Ground Processor Prototype) v1.1. The data, in netCDF format, cover a full orbit.

Corresponding file is SCA_L1_V1.tar.gz and associated checksum file is SCA_L1B.md5.

These test data are intended for format familiarisation and system testing.

Documentation available via FTP:

EPS-SG SCA Level 1B Product Format Specification
Readme file

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