Climatological measurements in Bergen 2016-2020

Paired daily and event sampling of the isotopic composition of vapour and precipitation at the Geophysical Insitute, Bergen, from December 2016 to March 2020

Inlet to the vapour isotope measurements on top of Geofysisk Institutt in Bergen, Parsivel2 Disdrometer in the back.

Near-continuous measurements of the vapour isotope composition in Bergen, Norway provided valuable insight into the atmospheric processing of water vapour related to storms travelling along the North Atlantic storm track. Isotopic measurements were supplemented by several weather stations, vertically profiling precipitation radar, and measurements of drop-size spectra. Pairing with precipitation sampling at sub-event time resolution for a large part of the time period allowed to decipher differences of atmospheric processing within frontal systems (Weng et al., 2021).

The climatological dataset will be a valuable resource for benchmarking isotope-enabled weather prediction and climate models, process studies, and studies relating to other measurement locations in the North Atlantic storm track region. The dataset is available from the Bjerknes Centre Data Centre, at an ERDDAP server.

Several studies show that the information content of paried vapour and precipitation data can be accessed with suitable tools and interpretation frameworks (Weng et al., 2021; Pellaud, 2018). Climatological measurements show that isotope parameters show, unlike other variables, most variability on a weather system time scale (Weng and Sodemann, in prep.).

Weng et al., 2021
Pellaud, 2018
Weng, 2021
Weng and Sodemann, in prep.