Blar i CICERO Working Papers på forfatter "Berntsen, Terje Koren"
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A simple model for scenario studies of changes in global climate: Version 1.0
Fuglestvedt, Jan S.; Berntsen, Terje Koren (CICERO Working Paper;1999:02, Working paper, 1999)This paper gives a documentation of a simple climate model for studying the effects of future climate gas emissions on global mean temperature and sea level. Input to the model is global emissions of 29 gases. Atmospheric ... -
An efficient and accurate carbon cycle model for use in simple climate models
Alfsen, Knut H.; Berntsen, Terje Koren (CICERO Working Paper;1999:01, Working paper, 1999)The aim of this publication is to document a simple model of the atmospheric CO2 concentration based on exogenous input of anthropogenic emission of CO2 and taking air-sea exchange and biospheric responses into account. ... -
Assessing compliance with the Kyoto Protocol: Expert reviews, inverse modelling, or both?
Rypdal, Kristin; Stordal, Frode; Fuglestvedt, Jan S.; Berntsen, Terje Koren (CICERO Working Paper;2003:07, Working paper, 2003)The Kyoto Protocol has an ambitious reporting and review system to assess nations’ compliance with their emission commitments. This system requires considerable resources to assure that the Parties report accurate emission ... -
Estimates of future climate based on SRES emission scenarios
Godal, Odd; Sygna, Linda; Fuglestvedt, Jan S.; Berntsen, Terje Koren (CICERO Working Paper;2000:04, Working paper, 2000)The preliminary emission scenarios in the Special Report on Emission Scenario (SRES) developed by the Intergovernmental Panel on Climate Change (IPCC), will eventually replace the old IS92 scenarios. By running these ... -
Impacts of reduced NOx emissions on radiative forcing through changes in tropospheric O3 and CH4: A global 3-D model study
Fuglestvedt, Jan S.; Berntsen, Terje Koren; Isaksen, Ivar S. A.; Mao, Huiting; Liang, Xin-Zhong; Wang, Wei-Chyung (CICERO Working Paper;1997:01, Working paper, 1997)A three-dimensional global chemical tracer model and a radiation transfer model have been used to study the role of reduced NOx emissions on radiative forcing. Through production of tropospheric O3, NOx emissions lead to ... -
NOx emissions from aircraft: Effects of lightning and convection on changes in tropospheric ozone
Berntsen, Terje Koren; Isaksen, Ivar S. A. (CICERO Working Paper;1998:05, Working paper, 1998)A global 3-dimensional chemical tracer model (CTM) has been used to study the impact on tropospheric ozone caused by NOx emissions from today’s fleet of subsonic aircraft (0.52 Tg(N)/yr), due to uncertainties in sources ...