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CLIM - CLoud IMager Spectrometer

The CLIM spectrometer is a spectral imager based on a three mirror telescope (TMA) which is part of the CO2M payload. The purpose of the instrument, which is largely based on the Vegetation Instrument flown on PROBA-V mission, is to determine CO2 emissions.

Copernicus is the core satellite Earth observation program of the European Commission and a cornerstone of the European Space Agency (ESA) activities in the field as well. It provides Earth observation data for environmental protection, climate monitoring, natural disaster assessment and other social tasks.

The objective of the ESA Copernicus Anthropogenic Cardon Dioxide Monitoring (CO2M) mission is to provide the European Union with an operational capacity that contributes to the global monitoring of anthropogenic CO2 emissions produced by human activity, in the context of emissions reduction commitments from the Nationally Determined Contributions (NDCs) that all countries of the world have taken in the Paris Agreement on Climate.

CLIM Instrument

The CLIM (Cloud Imager) is one of the instruments of the CO2M payload, in which the CO2I (CO2 Instrument) is the main instrument. The main purpose of the instrument is to determine the presence and position of the clouds in the CO2I field of view, with the aims to support the data screening and LoS analysis.

The CLIM is a spectral imager and is based on a three mirror telescope (TMA). In the focal plane of the TMA, a VNIR detector and a SWIR detector are present. The design is largely based on the Vegetation Instrument flown on the PROBA-V mission.

The CLIM consists of two subunits:

  • A CLIM OU (CLIM Optical Unit)
  • A CLIM EU (CLIM Electronics Unit)

The CLIM OU is interfaced mechanically with a CFRP bench, and the CLIM EU is interfaced mechanically with an aluminium bench.

The CLIM OU is the optical heart of the spectrometer, containing all the optics (TMA).

The CLIM EU is a box-like structure which houses the main electrical systems. It is the CLIM interface towards the spacecraft.

 

Keywords

Type: Hyperspectral

Application field: Earth observation

Mission: CO2M

Life: Design phase

CO2M … The Copernicus Anthropogenic Carbon Dioxide Monitoring payload

The CO2M mission would carry a near-infrared and shortwave-infrared spectrometer to measure atmospheric carbon dioxide produced by human activity. These measurements would reduce current uncertainties in estimates of emissions of carbon dioxide from the combustion of fossil fuel at national and regional scales. This would provide the European Union with a unique and independent source of information to assess the effectiveness of policy measures, and to track their impact towards decarbonising Europe and meeting national emission reduction targets.

The scientific payload of the mission consists of:

CO2I – CO2 Imager

NO2I – NO2 Imager

MAP – Multi-Angle Polarimeter

CLIM – Cloud Imager

Mission

Copernicus is the core satellite Earth observation program of the European Commission and a cornerstone of the European Space Agency (ESA) activities in the field as well. It provides Earth observation data for environmental protection, climate monitoring, natural disaster assessment and other social tasks.

The objective of the ESA Copernicus Anthropogenic Cardon Dioxide Monitoring (CO2M) mission is to provide the European Union with an operational capacity that contributes to the global monitoring of anthropogenic CO2 emissions produced by human activity, in the context of emissions reduction commitments from the Nationally Determined Contributions (NDCs) that all countries of the world have taken in the Paris Agreement on Climate.

The primary objective of the CO2 Monitoring mission is to measure images of total column CO2 with the resolution, accuracy, time sampling and spatial coverage required to provide the key space component input of the Operational Anthropogenic CO2 Emissions Monitoring & Verification Support (MVS) Capacity. Meeting the mission objective of the space component will enable to meet the high-level objectives of the MVS Capacity, which are

  • to detect emitting hot spots, such as megacities & power plants,
  • to monitor hot spot emissions to assess emission reductions/increase,
  • to assess emission changes against local reduction targets to monitor impacts of national contributions
  • to assess the national emissions and changes in 5-year time steps to estimate the global stock take.

ESA aims to launch CO2M by the end of 2025, and is expected to provide data from 2026 to support the second global stocktake of greenhouse gas emissions, to be concluded in 2028, by countries participating in the Paris Agreement

OIP’s Participation

OIP, as subcontractor to TAS, is delivering the CLIM instrument as part of the CO2M payload.

The CLIM spectral imager is based on the concept/design of the successful Vegetation Instrument, flown at the PROBA-V mission.

Status

The contract was awarded to OIP in the summer of 2020. The project is in the early stages.

Partners

CLIM is part of the Copernicus programme (ESA), for which OHB System is the Mission Prime contractor.

Thales Alenia Space (TAS) is acting as partner (Prime Contractor) to OHB for the development of the CO2M payload.

OIP, as subcontractor to TAS, is delivering the CLIM instrument as part of the CO2M payload. For this task, OIP will rely on a specific chain of subcontractors – based on the heritage of PROBA-V – such as DSI GmbH (D), Teledyne-e2v (UK), Xenics (B), Centre Spatial de Liège (B), AMOS (B), …

 

 

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