Geoscientific Instrumentation, Methods and Data Systems (GI) is an open-access interdisciplinary electronic journal for swift publication of original articles and short communications in the area of geoscientific instruments. It covers three main areas: (i) atmospheric and geospace sciences, (ii) earth science, and (iii) ocean science. A unique feature of the journal is the emphasis on synergy between science and technology that facilitates advances in GI. These advances include but are not limited to the following:concepts, design, and description of instrumentation and data systems;retrieval techniques of scientific products from measurements;calibration and data quality assessment;uncertainty in measurements;newly developed and planned research platforms and community instrumentation capabilities;major national and international field campaigns and observational research programs;new observational strategies to address societal needs in areas such as monitoring climate change and preventing natural disasters;networking of instruments for enhancing high temporal and spatial resolution of observations.GI has an innovative two-stage publication process involving the scientific discussion forum Geoscientific Instrumentation, Methods and Data Systems Discussions (GID), which has been designed to do the following:foster scientific discussion;maximize the effectiveness and transparency of scientific quality assurance;enable rapid publication;make scientific publications freely accessible.