Browsing CICERO Research Archive by Author "Haslerud, Amund Søvde"
Now showing items 1-6 of 6
-
Atmospheric methane evolution the last 40 years
Dalsøren, Stig Bjørløw; Myhre, Cathrine Lund; Myhre, Gunnar; Gomez-Pelaez, Angel J.; Haslerud, Amund Søvde; Isaksen, Ivar S. A.; Weiss, Ray F.; Harth, Christina M. (Peer reviewed; Journal article, 2016)Observations at surface sites show an increase in global mean surface methane (CH4) of about 180 parts per billion (ppb) (above 10 %) over the period 1984–2012. Over this period there are large fluctuations in the annual ... -
Concentrations and radiative forcing of anthropogenic aerosols from 1750 to 2014 simulated with the Oslo CTM3 and CEDS emission inventory
Lund, Marianne Tronstad; Myhre, Gunnar; Haslerud, Amund Søvde; Skeie, Ragnhild Bieltvedt; Griesfeller, Jan; Platt, Stephen Matthew; Kumar, Rajesh; Myhre, Cathrine Lund; Schulz, Michael (Peer reviewed; Journal article, 2018)We document the ability of the new-generation Oslo chemistry-transport model, Oslo CTM3, to accurately simulate present-day aerosol distributions. The model is then used with the new Community Emission Data System (CEDS) ... -
Concentrations and radiative forcing of anthropogenic aerosols from 1750 to 2014 simulated with the Oslo CTM3 and CEDS emission inventory
Lund, Marianne Tronstad; Myhre, Gunnar; Haslerud, Amund Søvde; Skeie, Ragnhild Bieltvedt; Griesfeller, Jan; Platt, Stephen Matthew; Kumar, Rajesh; Myhre, Cathrine Lund; Schulz, Michael (Peer reviewed; Journal article, 2018)We document the ability of the new-generation Oslo chemistry-transport model, Oslo CTM3, to accurately simulate present-day aerosol distributions. The model is then used with the new Community Emission Data System (CEDS) ... -
Global and regional radiative forcing from 20 % reductions in BC, OC and SO4 - An HTAP2 multi-model study
Stjern, Camilla Weum; Samset, Bjørn Hallvard; Myhre, Gunnar; Bian, Huisheng; Chin, Mian; Davila, Yanko; Dentener, Frank; Emmons, Louisa; Flemming, Johannes; Haslerud, Amund Søvde; Henze, Daven; Jonson, Jan Eiof; Kucsera, Tom; Lund, Marianne Tronstad; Schulz, Michael; Sudo, Kengo; Takemura, Toshihiko; Tilmes, Simone (Peer reviewed; Journal article, 2016)In the Hemispheric Transport of Air Pollution Phase 2 (HTAP2) exercise, a range of global atmospheric general circulation and chemical transport models performed coordinated perturbation experiments with 20 % reductions ... -
A machine learning examination of hydroxyl radical differences among model simulations for CCMI-1
Nicely, Julie M.; Duncan, Bryan; Hanisco, Thomas F.; Wolfe, Glenn M.; Salawitch, Ross J.; Deushi, Makoto; Haslerud, Amund Søvde; Jöckel, Patrick; Josse, Béatrice; Kinnison, Douglas E.; Klekociuk, Andrew; Manyin, Michael E.; Marécal, Virginie; Morgenstern, Olaf; Murray, Lee T.; Myhre, Gunnar; Oman, Luke D.; Pitari, Giovanni; Pozzer, Andrea; Quaglia, Ilaria; Revell, Laura E.; Rozanov, Eugene; Stenke, Andrea; Stone, Kane; Strahan, Susan E.; Tilmes, Simone; Tost, Holger; Westervelt, Daniel M.; Zeng, Guang (Journal article; Peer reviewed, 2020)The hydroxyl radical (OH) plays critical roles within the troposphere, such as determining the lifetime of methane (CH4), yet is challenging to model due to its fast cycling and dependence on a multitude of sources and ... -
Possible Effects of Greenhouse Gases to Ozone Profiles and DNA Active UV-B Irradiance at Ground Level
Eleftheratos, Kostas; Kapsomenakis, John; Zerefos, Christos S.; Bais, Alkiviadis F.; Fountoulakis, Ilias; Dameris, Martin; Jöckel, Patrick; Haslerud, Amund Søvde; Godin-Beekmann, Sophie; Steinbrecht, Wolfgang; Petropavlovskikh, Irina; Brogniez, Colette; Leblanc, Thierry; Liley, J. Ben; Querel, Richard; Swart, Daan P.J. (Journal article; Peer reviewed, 2020)In this paper, we compare model calculations of ozone profiles and their variability for the period 1998 to 2016 with satellite and lidar profiles at five ground-based stations. Under the investigation is the temporal ...