C3S2_620 Improved treatment of the stratosphere in C3S reanalyses
This tender is from the country of United Kingdom in Europe region. The tender was published by ECMWF on 21 Nov 2025 for ECMWF as the Entrusted Entity for the Copernicus Climate Change Service C3S invites Tenders for development activities to assess and improve the treatment of the stratosphere in climate reanalyses This will be achieved by completing developments in the ECMWF Integrated Forecasting System IFS and performing assimilation experiments with observations of upper atmospheric temperature and humidity This work will assess the quality of ERA6 temperature and humidity in the upper atmosphere shortly after production and evaluate a method for correcting model biases in the stratosphere in early periods of future reanalyses using information from the data-rich modern era To support the validation of these developments high-quality in-situ observation data records shall be acquired ECMWF intends to award a single Framework Agreement for a period of maximum 30 months which shall be implemented via a single Service Contract expected to commence in Q2 2026 Portal instructions Some of the ITT documents are accessible under the Attachments box at bottom right of this page The full set of ITT documents which are provided inside the response questionnaire are only accessible by registering an interest in this opportunity see the Expression of interest window at top right Please refer initially to the ECMWF eProcurement Portal Guidance for suppliers file in the Attachments box as this document will help you navigate the portal and locate the necessary information in order to submit a proposal Please note that the contact email address shown under Contact details is not monitored and any messages sent to this email address will not be attended to Questions clarifications concerning this ITT must be submitted via the Messaging area of the ITT which can be accessed through the My Activities page of the Portal once you have logged-in and registered your interest in this opportunity. The last date to submit your bid for this tender is 21 Jan 2026. This tender is for the companies specializing in Climatology services and similar sectors.
Tender Organisation:
ECMWF
Tender Sector:
Tender Service:
Worldwide
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Tender Country:
Tender CPV:
71351611 : Climatology services
Tender Document Type:
Tender Notice
Tender Description:
ECMWF as the Entrusted Entity for the Copernicus Climate Change Service C3S invites Tenders for development activities to assess and improve the treatment of the stratosphere in climate reanalyses This will be achieved by completing developments in the ECMWF Integrated Forecasting System IFS and performing assimilation experiments with observations of upper atmospheric temperature and humidity This work will assess the quality of ERA6 temperature and humidity in the upper atmosphere shortly after production and evaluate a method for correcting model biases in the stratosphere in early periods of future reanalyses using information from the data-rich modern era To support the validation of these developments high-quality in-situ observation data records shall be acquired ECMWF intends to award a single Framework Agreement for a period of maximum 30 months which shall be implemented via a single Service Contract expected to commence in Q2 2026 Portal instructions Some of the ITT documents are accessible under the Attachments box at bottom right of this page The full set of ITT documents which are provided inside the response questionnaire are only accessible by registering an interest in this opportunity see the Expression of interest window at top right Please refer initially to the ECMWF eProcurement Portal Guidance for suppliers file in the Attachments box as this document will help you navigate the portal and locate the necessary information in order to submit a proposal Please note that the contact email address shown under Contact details is not monitored and any messages sent to this email address will not be attended to Questions clarifications concerning this ITT must be submitted via the Messaging area of the ITT which can be accessed through the My Activities page of the Portal once you have logged-in and registered your interest in this opportunity
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