The IHFC welcomes your proactive contributions to the Global Heat Flow Database. To prepare your data, we kindly ask you to copy and paste your data into our templates, provided for Excel. The template fields and allowed value ranges are explained in the database definition (Quality-assurance of heat-flow data: The new structure and evaluation scheme of the IHFC Global Heat Flow Database). After filling in the template, do upload the file on this page. You may upload multiple files in one upload operation, so please add also any explanatory material and/or the original publication. All entries of the form below with an asterisk (*) represent mandatory fields which need to be completed. Uploaded data will be evaluated by the IHFC for final validation. Authors will be contacted during the further procedure and informed about the status. Use this form to upload new heat-flow data not considered in the Global Heat Flow Database yet. For the upload of data revised in the frame of the data assessment project, please use this form.