Dear Colleagues, Given the short time frame to submit ideas papers, and the proximity to the holidays, we are pleased to announce that we can extend the deadline for submission to COB on Dec 1, 2015. This is the last extension we can give and still allow accepted paper authors to plan to attend. We thank you for considering this event and hope to see a wide array of submissions from the community. ----- Dear Colleagues, A workshop to discuss bold, new computational ideas to address longer-term science needs for climate modeling is being convened January 26-28, 2016 in Rockville, MD. As the climate science community explores a host of critical science questions to be answered over the next 10+ years, with the aim of informing stakeholders about the ongoing changes in global and local climate, there is a growing recognition of the expanding requirements for multiscale, global, coupled Earth system models. We expect them to provide much more detail and fidelity, with a much better understanding of their uncertainties, while still executing robustly and efficiently on ever larger and more complex computing systems. The DOE Office of Science BER and ASCR programs are sponsoring the event, titled “Advancing Cross-cutting Ideas for Computational Climate Science”, or AXICCS 2016. It is a grassroots effort to generate fresh thinking that will mold the optimal science directions and motivate the latest and as yet to be uncovered ASCR developments that will be required to handle new requirements. A report outlining the challenges, strategies to address them, and possible avenues for execution will be one of the outcomes of the event. A website with details and logistics will be provided shortly. A key aspect to achieve the workshop goals is to brainstorm before the event, and to accomplish this we are soliciting community input in the form of “ideas” papers. Overall space at the event is limited, but we plan to accommodate the lead authors of these ideas papers via a presentation (oral or poster) and acknowledgement in the workshop report. Some of those selected will be included in the workshop write-up. Details about the format for the ideas papers and templates to download are provided at http://www.csm.ornl.gov/workshops/AXICCS/paper.html. Ideas papers must be submitted through a link to EasyChair no later than 5:00pm Eastern Time on Nov 24, 2015, and official invitations to present will be sent to selected lead authors by Dec 9, 2015. Attendees will need to cover their own travel expenses. We would like to express our sincere appreciation to the workshop sponsors, the DOE Office of Science BER and ASCR programs, and in particular, Drs. Dorothy Koch and Randall Laviolette for their encouragement to proceed. We also thank those who have volunteered to become a part of the organizing committee. Sincerely, Katherine Evans, Oak Ridge National Laboratory Esmond Ng, Lawrence Berkeley National Laboratory