Abstract
Micro-scale models are important to assess processes in complex domains,
for example cities. The most common data standard for atmospheric model
output data are the CF-conventions, a data standard for netCDF files,
but this standard is not adapted to the model output of micro-scale
models. As a part of the project AtMoDat (Atmospheric Model Data) we
want to develop a model data standard for obstacle resolving models
(ORM), including the additional variables (i.e. building structures,
wall temperatures) used by these models. In order to involve the
micro-scale modeller community in this process, a web based survey was
developed and distributed in the modeller community via conferences and
email. With this survey we want to find out which micro-scale ORMs are
currently in use, their model specifics (e.g. used grid, coordinate
system), and the handling of the model result data. Furthermore, the
survey provides the opportunity to include suggestions and ideas, what
we should consider in the development of the standard. Between September
2019 and July 2020, the survey was accessed 29 times, but only 12
surveys were completed. The finished surveys refer to eight different
models and their corresponding model information. Results show that
these different models use different output formats and processing
tools, which results in different model result handling routines. The
participants suggested to use the netCDF data format and to provide
information on model initialization, model settings and model input
along with the model output data. This would enable an easier
intercomparison between different models and repetition of model
simulations. Standardized model output and variable names would also
enhance the development of shared routines for the analysis of
micro-scale model data and a better findability of the data with search
engines. This survey will remain open with regular assessments of
contents (i.e. November 2020, May 2021; https://uhh.de/orm-survey).