Abstract. The Antarctic Precipitation System project deployed and
maintained four sites across the northwestern Ross Ice Shelf in Antarctica from
November 2017 to November 2019. The goals for the project included the
collection of in situ observations of precipitation in Antarctica spanning a
duration of 2 years, an improvement in the understanding of precipitation
events across the Ross Ice Shelf, and the ability to validate precipitation
data from atmospheric numerical models. At each of the four sites the
precipitation was measured with an OTT Pluvio2 precipitation gauge.
Additionally, snow accumulation at the site was measured with a sonic
ranging sensor and using GPS interferometric reflectivity. Supplemental
observations of temperature, wind speed, particle count, particle size and
speed, and images and video from a camera were collected to provide context
to the precipitation measurements. The collected dataset represents some of
the first year-round observations of precipitation in Antarctica at remote
locations using an autonomous measurement system. The acquired observations
have been quality-controlled and post-processed, and they are available for
retrieval through the United States Antarctic Program Data Center (https://doi.org/10.15784/601441, Seefeldt,
2021).