Homogenized radiosonde record at station Ny-Ålesund, Spitsbergen, 1993-2014 ...

• Main Authors: Maturilli, Marion, Kayser, Markus
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2016
• Subjects: Arctic Amplification AC3; Meteorological Long-Term Observations @ AWI AWI_Meteo; Ny Ålesund; Ny-Ålesund; Svalbard; Spitsbergen
• Online Access: https://dx.doi.org/10.1594/pangaea.845373; https://doi.pangaea.de/10.1594/PANGAEA.845373

Radiosonde measurements obtained at the Arctic site Ny-Ålesund (78.9°N, 11.9°E), Svalbard, from 1993 to 2014 have been homogenized accounting for instrumentation discontinuities by correcting known errors in the manufacturer provided profiles. From the homogenized data record, the first Ny-Ålesund upper-air climatology of wind, temperature and humidity is presented, forming the background for the analysis of changes during the 22-year period. Particularly during the winter season, a strong increase in atmospheric temperature and humidity is observed, with a significant warming of the free troposphere in January and February up to 3 K per decade. This winter warming is even more pronounced in the boundary layer below 1 km, presumably amplified by mesoscale processes including e.g. orographic effects or the boundary layer capping inversion. Though the largest contribution to the increasing atmospheric water vapour column in winter originates from the lowermost 2 km, no increase in the contribution by specific ... : Supplement to: Maturilli, Marion; Kayser, Markus (2016): Arctic warming, moisture increase and circulation changes observed in the Ny-Ålesund homogenized radiosonde record. Theoretical and Applied Climatology, 17 pp ...