Publikasjoner

Toward quality-controlled soil moisture products for climate studies using data assimilation of multiple satellite datasets.

Lahoz, W.; Svendby, T.; Griesfeller, A.; de Jeu, R.; Dorigo, W.

Toward improving the representation of the water cycle at High Northern Latitudes.

Lahoz, W.A.; Svendby, T.; Griesfeller, A.; Kristiansen, J.

Toward Comprehensive Per- and Polyfluoroalkyl Substances Annotation Using FluoroMatch Software and Intelligent High-Resolution Tandem Mass Spectrometry Acquisition

Koelmel, Jeremy P.; Paige, Matthew K.; Aristizabal-Henao, Juan J.; Robey, Nicole M.; Nason, Sara L.; Stelben, Paul J.; Li, Yang; Kroeger, Nicholas M.; Napolitano, Michael P.; Savvaides, Tina; Vasiliou, Vasilis; Rostkowski, Pawel; Garrett, Timothy J.; Lin, Elizabeth; Deigl, Chris; Jobst, Karl; Townsend, Timothy G.; Pollitt, Krystal J. Godri; Bowden, John A.

American Chemical Society (ACS)

Toward assimilation of crowdsourcing data using the EnKF. NILU F

Lahoz, W.; Schneider, P.

Toward a unified terminology of processing levels for low-cost air-quality sensors

Schneider, Philipp; Bartonova, Alena; Castell, Nuria; Dauge, Franck Rene; Gerboles, Michel; Hagler, Gayle S. W.; Huglin, Christoph; Jones, Roderic L.; Khan, Sean; Lewis, Alastair C.; Mijling, Bas; Müller, Michael; Penza, Michele; Spinelle, Laurent; Stacey, Brian; Vogt, Matthias; Wesseling, Joost; Williams, Ronald W.

Toward a High Spatial Resolution Value Added and Employment Satellite Account for Norway

Moran, Daniel; Boero, Riccardo

Total ozone trends at three northern high-latitude stations

Bernet, Leonie; Svendby, Tove Marit; Hansen, Georg Heinrich; Orsolini, Yvan; Dahlback, Arne; Goutail, Florence; Pazmino, Andrea; Petkov, Boyan; Kylling, Arve

After the decrease of ozone-depleting substances (ODSs) as a consequence of the Montreal Protocol, it is still challenging to detect a recovery in the total column amount of ozone (total ozone) at northern high latitudes. To assess regional total ozone changes in the “ozone-recovery” period (2000–2020) at northern high latitudes, this study investigates trends from ground-based total ozone measurements at three stations in Norway (Oslo, Andøya, and Ny-Ålesund). For this purpose, we combine measurements from Brewer spectrophotometers, ground-based UV filter radiometers (GUVs), and a SAOZ (Système d'Analyse par Observation Zénithale) instrument. The Brewer measurements have been extended to work under cloudy conditions using the global irradiance (GI) technique, which is also presented in this study. We derive trends from the combined ground-based time series with the multiple linear regression model from the Long-term Ozone Trends and Uncertainties in the Stratosphere (LOTUS) project. We evaluate various predictors in the regression model and found that tropopause pressure and lower-stratospheric temperature contribute most to ozone variability at the three stations. We report significantly positive annual trends at Andøya (0.9±0.7 % per decade) and Ny-Ålesund (1.5±0.1 % per decade) and no significant annual trend at Oslo (0.1±0.5 % per decade) but significantly positive trends in autumn at all stations. Finally we found positive but insignificant trends of around 3 % per decade in March at all three stations, which may be an indication of Arctic springtime ozone recovery. Our results contribute to a better understanding of regional total ozone trends at northern high latitudes, which is essential to assess how Arctic ozone responds to changes in ODSs and to climate change.

Total ozone trends and variability at three northern high-latitude stations

Bernet, Leonie; Svendby, Tove Marit; Hansen, Georg H.; Orsolini, Yvan J.; Dahlback, Arne; Goutail, Florence; Pazmino, Andrea; Petkov, Boyan

Total ozone monitoring from the geostationary orbit : an example using GOES-8 infrared measurements.

Orsolini, Y.J.

Total ozone loss during the 2019/20 Arctic winter and comparison to previous years

Goutail, Florence; Pommereau, Jean-Pierre; Pazmino, Andrea; Lefevre, Franck; Clerbaux, Cathy; Boynard, Anne; Hadji-Lazaro, Juliette; Chipperfield, Martyn; Feng, Wuhu; Van Roozendael, Michel; Jepsen, Nis; Hansen, Georg Heinrich; Kivi, Rigel; Bognar, Kristof; Strong, Kimberly; Walker, Kaley

Total ozone loss during the 2016/17 Arctic winter and comparison to previous years.

Goutail, F.; Pommereau, J.-P.; Pazmino, A.; Lefevre, F.; Chipperfield, M.; Feng, W.; Van Roozendael, M.; Eriksen, P.; Stebel, K.; Kivi, R.; Bognar, K.; Strong, K.; Walker, K.

Total ozone loss during the 2014/15 Arctic winter and comparison to previous years.

Goutail, F.; Lefèvre, F.; Pommereau, J.-P.; Pazmino, A.; Chipperfield, M.; Feng, W.; Van Roozendael, M.; Eriksen, P.; Stebel, K.; Kivi, R.; Zhao, X.; Strong, K.