Dear all,

we hope this email finds you well. Here you receive some news regarding the ICOS OTC pCO2 inter-comparison. The inter-comparison will start in less than 5 month from now and we had to make a decision on how to proceed. Due to the ongoing situation and the fact that the roll-out of the vaccine will take a while we decided to run the inter-comparison as some kind of a virtual event. The details need to be discussed during the coming weeks, but here are some guidelines on how we would like to proceed:

* The inter-comparison will still take place from 28. June to 11. July 2021. * The groups send their instruments and a core group of ca. 5 people will run the instruments. * During the inter-comparison there will be at least one virtual meeting (depending on time zones) per day with participating groups. * In addition we can have individual meetings to maintain instruments. We will organize equipment to maintain your instruments in an online fashion (live cams, etc.). * We will contact the groups individually to discuss missing information. * Be prepared to ship your instruments to Europe before June 10, 2021. Please contact me in advance so we can organize shipping.

We will plan for having visitors at the site in case the situation relaxes, but this will not be for more than 10 people. During the coming days we will update the website accordingly.

Best wishes, Tobias (on behalf of the organizing group)

Dr. Tobias Steinhoff Senior Engineer, ICOS OTC NORCE Norwegian Research Centre, Bjerknes Centre for Climate Research Jahnebakken 5 NO-5007 Bergen, Norway Phone: +49 1522 4512785 E-mail: tost@norceresearch.no

[cid:norce_426cc920-64ab-4893-95d0-c29d5dab670c.png]

NORCE Norwegian Research Centre AS norceresearch.nohttps://www.norceresearch.no/