Browsing Bergen Open Research Archive by Author "Sodemann, Harald"
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2018 International Atmospheric Rivers Conference : Multi‐disciplinary studies and high‐impact applications of atmospheric rivers
Ramos, Alexandre; Wilson, Anna; DeFlorio, Michael; Barnes, Elizabeth A.; Garreaud, Rene; Gorodetskaya, Irina V.; Lavers, David A; Moore, Benjamin; Payne, Ashley; Smallcomb, Chris; Sodemann, Harald; Wehner, Michael; Ralph, Fred Martin (Peer reviewed; Journal article, 2019-07-26)Atmospheric rivers (ARs) play a vital role in shaping the hydroclimate of many regions globally, and can substantially impact water resource management, emergency response planning, and other socioeconomic entities. The ... -
Assessing the Sampling Quality of a Low-Tech Low-Budget Volume-Based Rainfall Sampler for Stable Isotope Analysis
Fischer, Benjamin M C; Aemisegger, Franziska; Graf, Pascal; Sodemann, Harald; Seibert, Jan (Peer reviewed; Journal article, 2019-09-27)To better understand the small-scale variability of rainfall and its isotopic composition it is advantageous to utilize rain samplers which are at the same time low-cost, low-tech, robust, and precise with respect to the ... -
Characterising the local and intense water cycle during a cold air outbreak in the Nordic Seas
Papritz, Lukas; Sodemann, Harald (Journal article; Peer reviewed, 2018)Air masses in marine cold air outbreaks (CAOs) at high latitudes undergo a remarkable diabatic transformation because of the uptake of heat and moisture from the ocean surface, and the formation of precipitation. In this ... -
Characterization and Correction of Evaporative Artifacts in Speleothem Fluid Inclusion Isotope Analyses as Applied to a Stalagmite From Borneo
Fernandez, A; Loeland, Marit Holten; Maccali, Jenny; Krüger, Yves Stephan; Vonhof, Hubert; Sodemann, Harald; Meckler, Anna Nele (Journal article; Peer reviewed, 2023)Fluid inclusion water isotope measurements in speleothems have great potential for paleoclimate studies as they enable the reconstruction of precipitation dynamics and land temperatures. Several previous observations, ... -
Correcting the impact of the isotope composition on the mixing ratio dependency of water vapour isotope measurements with cavity ring-down spectrometers
Weng, Yongbiao; Touzeau, Alexandra; Sodemann, Harald (Journal article; Peer reviewed, 2020)Recent advances in laser spectroscopy enable high-frequency in situ measurements of the isotope composition of water vapour. At low water vapour mixing ratios, however, the measured stable water isotope composition can be ... -
Differential absorption lidar for water vapor isotopologues in the 1.98 μm spectral region: Sensitivity analysis with respect to regional atmospheric variability
Hamperl, Jonas; Capitaine, Clément; Dherbecourt, Jean-Baptiste; Raybaut, Myriam; Chazette, Patrick; Totems, Julien; Grouiez, Bruno; Régalia, Laurence; Santagata, Rosa; Evesque, Corinne; Melkonian, Jean-Michel; Godard, Antoine; Seidl, Andrew; Sodemann, Harald; Flamant, Cyrille (Journal article; Peer reviewed, 2021)Laser active remote sensing of tropospheric water vapor is a promising technology to complement passive observational means in order to enhance our understanding of processes governing the global hydrological cycle. In ... -
Evaluating TROPOMI δD Column Retrievals With In Situ Airborne Field Campaign Measurements Using Expanded Collocation Criterion
Thurnherr, Iris; Sodemann, Harald; Trent, Tim; Werner, Martin; Bösch, Hartmut (Journal article; Peer reviewed, 2024)Satellite observations of column-averaged water isotopes are relatively new retrieval products that are in need of further in situ evaluation. Such evaluation studies are generally difficult to perform due to the wide ... -
Evolution of tropical land temperature across the last glacial termination
Løland, Marit Holten; Krüger, Yves Stephan; Fernandez, Alvaro; Buckingham, Frances; Carolin, Stacy A.; Sodemann, Harald; Adkins, Jess F.; Cobb, Kim M.; Meckler, Anna Nele (Journal article; Peer reviewed, 2022)The tropical West Pacific hosts the warmest part of the surface ocean and has a considerable impact on the global climate system. Reconstructions of past temperature in this region can elucidate climate connections between ... -
Experimental investigation of the stable water isotope distribution in an Alpine lake environment (L-WAIVE)
Chazette, Patrick; Flamant, Cyrille; Sodemann, Harald; Totems, Julien; Monod, Anne; Dieudonné, Elsa; Baron, Alexandre; Seidl, Andrew Walter; Steen-Larsen, Hans Christian; Doira, Pascal; Durand, Amandine; Ravier, Sylvain (Journal article; Peer reviewed, 2021)In order to gain understanding on the vertical structure of atmospheric water vapour above mountain lakes and to assess its link with the isotopic composition of the lake water and with small-scale dynamics (i.e. valley ... -
A flexible device to produce a gas stream with a precisely controlled water vapour mixing ratio and isotope composition based on microdrop dispensing technology
Sodemann, Harald; Dekhtyareva, Alena; Bremer, Alvaro Fernandez; Seidl, Andrew Walter; Maccali, Jenny (Journal article; Peer reviewed, 2023)Here we describe a versatile device to produce a gas stream with a precisely controlled water vapour mixing ratio and stable water isotope composition based on microdrop dispensing technology. To produce a moist ... -
FLIIMP - a community software for the processing, calibration, and reporting of liquid water isotope measurements on cavity-ring down spectrometers
Sodemann, Harald; Mørkved, Pål Tore; Wahl, Sonja (Journal article; Peer reviewed, 2023)Precise and accurate measurements of the stable isotope composition from precipitation, land ice, runoff, and oceans provide critical information on Earth's water cycle. The analysis, post-processing, and calibration of ... -
High-resolution stable isotope signature of a land-falling atmospheric river in southern Norway
Weng, Yongbiao; Johannessen, Aina Marie; Sodemann, Harald (Journal article; Peer reviewed, 2021)Heavy precipitation at the west coast of Norway is often connected to elongated meridional structures of high integrated water vapour transport known as atmospheric rivers (ARs). Here we present high-resolution measurements ... -
The Iceland Greenland seas project
Renfrew, Ian Alasdair; Pickart, RS; Våge, Kjetil; Moore, GWK; Bracegirdle, TJ; Elvidge, AD; Jeansson, Emil; Lachlan-Cope, T; McRaven, LT; Papritz, L; Reuder, Joachim; Sodemann, Harald; Terpstra, Annick; Waterman, S; Valdimarsson, H; Weiss, A; Almansi, M; Bahr, F; Brakstad, Ailin; Barrell, C; Brooke, JK; Brooks, BJ; Brooks, IM; Brooks, ME; Bruvik, Erik Magnus; Duscha, Christiane; Fer, Ilker; Golid, Heidi M.; Hallerstig, Matilda; Hessevik, Idar; Huang, J; Houghton, L; Jonsson, S; Jonassen, Marius Opsanger; Jackson, Kristin; Kvalsund, Karsten; Kolstad, Erik Wilhelm; Konstali, Kjersti; Kristiansen, Jørn; Ladkin, R; Lin, P; MacRander, A; Mitchell, A; Olafsson, H; Pacini, A; Payne, C; Palmason, B; Perez-Hernandez, MD; Peterson, Algot Kristoffer; Petersen, GN; Pisareva, MN; Pope, JO; Seidl, Andrew; Semper, Stefanie; Sergeev, D; Skjelsvik, Silje; Søiland, Henrik; Smith, D; Spall, MA; Spengler, Thomas; Touzeau, Alexandra; Tupper, G; Weng, Yongbiao; Williams, KD; Yang, X; Zhou, Shenjie (Peer reviewed; Journal article, 2019)The Iceland Greenland Seas Project (IGP) is a coordinated atmosphere–ocean research program investigating climate processes in the source region of the densest waters of the Atlantic meridional overturning circulation. ... -
Lagrangian matches between observations from aircraft, lidar and radar in a warm conveyor belt crossing orography
Boettcher, Maxi; Schäfler, Andreas; Sprenger, Michael; Sodemann, Harald; Kaufmann, Stefan; Voigt, Christiane; Schlager, Hans; Summa, Donato; DI Girolamo, Paolo; Nerini, Daniele; Germann, Urs; Wernli, Heini (Journal article; Peer reviewed, 2021)Warm conveyor belts (WCBs) are important airstreams in extratropical cyclones, often leading to the formation of intense precipitation and the amplification of upper-level ridges. This study presents a case study that ... -
The Lagrangian particle dispersion model FLEXPART version 10.4
Pisso, Ignacio; Sollum, Espen; Grythe, Henrik; Kristiansen, Nina Iren; Cassiani, Massimo; Eckhardt, Sabine; Arnold, Delia; Morton, Don; Thompson, Rona Louise; Zwaaftink, Christine Groot; Evangeliou, Nikolaos; Sodemann, Harald; Haimberger, Leopold; Henne, Stephan; Brunner, Dominik; Burkhart, John; Fouilloux, Anne Claire; Brioude, Jerome; Philipp, Anne; Seibert, Petra; Stohl, Andreas (Peer reviewed; Journal article, 2019-12-02)The Lagrangian particle dispersion model FLEXPART in its original version in the mid-1990s was designed for calculating the long-range and mesoscale dispersion of hazardous substances from point sources, such as those ... -
Linking Sub-Tropical Evaporation and Extreme Precipitation Over East Antarctica: An Atmospheric River Case Study
Terpstra, Annick; Gorodetskaya, Irina V.; Sodemann, Harald (Journal article; Peer reviewed, 2021)We investigate an intense snowfall event between 15 and 18 February 2011 over the East Antarctic coastal region which contributed to roughly 24% of the annual snow accumulation. The event was previously associated with an ... -
Meridional and vertical variations of the water vapour isotopic composition in the marine boundary layer over the Atlantic and Southern Ocean
Thurnherr, Iris; Kozachek, Anna V.; Graf, Pascal; Weng, Yongbiao; Bolshiyanov, Dimitri Yu.; Landwehr, Sebastian; Pfahl, Stephan; Schmale, Julia; Sodemann, Harald; Steen-Larsen, Hans Christian; Toffoli, Alessandro; Wernli, Heini; Aemisegger, Franziska (Journal article; Peer reviewed, 2020)Stable water isotopologues (SWIs) are useful tracers of moist diabatic processes in the atmospheric water cycle. They provide a framework to analyse moist processes on a range of timescales from large-scale moisture transport ... -
Model-simulated hydroclimate in the East Asian summer monsoon region during past and future climate: a pilot study with a moisture source perspective
Fremme, Astrid Kristine; Hezel, Paul; Seland, Øyvind; Sodemann, Harald (Journal article; Peer reviewed, 2023)Here we present a pilot study of the sensitivity of summer monsoon precipitation in the Yangtze River Valley (YRV; 110–122∘ E and 27–33∘ N, eastern China) to climatic boundary conditions from the Last Glacial Maximum (LGM), ... -
A modular field system for near-surface, vertical profiling of the atmospheric composition in harsh environments using cavity ring-down spectroscopy
Seidl, Andrew Walter; Sodemann, Harald; Steen-Larsen, Hans Christian (Journal article; Peer reviewed, 2023)Cavity ring-down spectroscopy (CRDS) has allowed for increasingly widespread, in situ observations of trace gases, including the stable isotopic composition of water vapor. However, gathering observations in harsh environments ... -
A new interpretative framework for below-cloud effects on stable water isotopes in vapour and rain
Graf, Pascal; Wernli, Heini; Pfahl, Stephan; Sodemann, Harald (Peer reviewed; Journal article, 2019-01-22)Raindrops interact with water vapour in ambient air while sedimenting from the cloud base to the ground. They constantly exchange water molecules with the environment and, in sub-saturated air, they evaporate partially or ...