The following survey is for researchers who are interested in the representation of the QBO, in past and present-day global climate models. The questionnaire is meant to be simple and straight forward to complete, and does not require answers to all questions. As a minimum, those parts displaying an asterisk should be filled out. It is anticipated that the results from this survey will be published in a peer reviewed journal and those contributing to an intercomparison of modelled QBOs will be invited to be co-authors. If you would like to contribute to discussions or seek involvement, please go the to QBOi Discussion pages. Thank you in advance for your input, it is greatly appreciated.