Engineering topics
Publications and source records attributed to Stuefer, Martin.
The c1 level data product for the Mutli-Angle Snowflake Camera contains snowflake fall speeds and particle size, among other analysis for images associated with each hydrometeor.
The c1 level data product for the Mutli-Angle Snowflake Camera contains snowflake fall speeds and particle size, among other analysis for images associated with each hydrometeor.
Camera to view southeast scene at BNF tower site from 6m height, processed into a movie
Camera to view southwest scene at BNF tower site from 6m height, processed into a movie
Camera with a view of an instrument field, facing northeast
Camera with a view of an instrument field, facing northeast, processed into a movie
Camera with a view of an instrument field, facing south, processed into a movie
Camera with a view of an instrument field, facing south
Camera to view southwest scene at BNF tower site from 4m height
Camera to view southwest scene at BNF tower site from 4m height, processed into a movie
Camera to view southeast scene at BNF tower site from 4m height, processed into a movie
Camera to view southeast scene at BNF tower site from 4m height
Microphysical observations of precipitating particles are critical data sources for numerical weather prediction models and remote sensing retrieval algorithms. However, obtaining coherent data sets of particle microphysics is challenging as they are often unindexed, distributed across disparate institutions, and have not undergone a uniform quality control process. This work introduces a unified, comprehensive Northern Hemisphere particle microphysical data set from the National Aeronautics and Space Administration precipitation imaging package (PIP), accessible in a standardized data format and stored in a centralized, public repository. Data is collected from 10 measurement sites spanning 34° latitude (37°N–71°N) over 10 years (2014–2023), which comprise a set of 1,070,000 precipitating minutes. The provided data set includes measurements of a suite of microphysical attributes for both rain and snow, including distributions of particle size, vertical velocity, and effective density, along with higher-order products including an approximation of volume-weighted equivalent particle densities, liquid equivalent snowfall, and rainfall rate estimates. The data underwent a rigorous standardization and quality assurance process to filter out erroneous observations to produce a self-describing, scalable, and achievable data set. Case study analyses demonstrate the capabilities of the data set in identifying physical processes like precipitation phase-changes at high temporal resolution. Bulk precipitation characteristics from a multi-site intercomparison also highlight distinct microphysical properties unique to each location. This curated PIP data set is a robust database of high-quality particle microphysical observations for constraining future precipitation retrieval algorithms, and offers new insights toward better understanding regional and seasonal differences in bulk precipitation characteristics.
Camera facing SW to monitor ocean from AERI at kcg:M1
Camera facing NW to monitor ocean from AERI at kcg:M1