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MSc / BSc Thesis Topics 2012

MSc / BSc Thesis Topics 2012. Atmospheric Chemistry Group 7 potential topics. Topic 1: Sensitivity of model simulations to horizontal and vertical resolution . Temperature T42 – T31. Key questions:

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MSc / BSc Thesis Topics 2012

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  1. MSc/BSc Thesis Topics 2012 Atmospheric Chemistry Group 7 potential topics

  2. Topic 1: Sensitivity of model simulations to horizontal and vertical resolution Temperature T42 – T31 Key questions: How do the results of a global chemistry-climate model change with increasing horizontal and vertical resolution? What are the main reasons? Key tasks: Computational work and data analysis. Tutor: Andrea Stenke, Tel. 33625, andrea.stenke@env.ethz.ch Temperature difference for September between two model simulations in T42 (2.81° x 2.81°) and T31 (3.75° x 3.75°) horizontal resolution.

  3. Topic 2: Climate effects of regional nuclear conflicts – albedo feedbacks Key questions: What kind of albedo and sea-ice feedback processes determine global climate after massive soot emissions of a regional nuclear conflict? Is there a tipping point? Key tasks: Computational work and data analysis. Tutor: Andrea Stenke, Tel. 33625, andrea.stenke@env.ethz.ch Global mean surface albedo change for different scenario runs.

  4. Topics 3a-e: Global modeling of the ozone and climate changes Monthly mean Total Ozone changes 2100-1980 (%) simulations with CCM SOCOL v2.0

  5. Topic 3a: Which quantities may serve as indicators for the strength of the Brewer-Dobson circulation? • Key questions: • How does the strength of the B-D circulation affect different atmospheric quantities? • How does this affect observational data and model results? • Key tasks: • Data analysis, statistical methods • Tutors: • Eugene Rozanov (PMOD Davos), • Tom Peter • Tel. 081 4175135, e.rozanov@pmodwrc.ch H2O anomalies (“tape recorder”) from the HALOE satellite instrument

  6. Topic 3b: Which reactions are responsible for temperature dependence of the stratospheric ozone content? • Key questions: • Which chemical reactions are important for the temperature dependence of stratospheric ozone net destruction? • Key tasks: • Numerical experiments with the models of different complexity • Tutor: • Eugene Rozanov (PMODDavos), • Tom Peter, • Tel. 081 4175135, e.rozanov@pmodwrc.ch

  7. Topic 3c: How well represented is the tropospheric climate in CCMs that participated in the SPARC CCM Validation campaign? • Key questions: • Evaluate the performance of 18 CCMs in the simulation of the past (1960-2007) tropospheric climate changes. How do they compare? • Key tasks: • Type of work: • Data analyze, statistical methods • Tutor: • Tom Peter, • Eugene Rozanov, • Tel. 081 4175135, e.rozanov@pmodwrc.ch

  8. Topic 3d: How well is the influence of the sulfate aerosol on heating rates simulated with ECHAM radiation codes? • Key questions: • How does the performance of the ECHAM radiation codes in simulation of the heating rate changes due to sulfate aerosol compare, e.g. after volcanic eruptions? • Key tasks: • Numerical experiments with the state-of-the-art radiation transfer codes • Tutor: • Tom Peter, • Eugene Rozanov, • Tel. 081 4175135, e.rozanov@pmodwrc.ch

  9. Topic 4: Understanding aerosol ageing - ozonolysis of organic aerosol proxies Key questions: How does the physical state of organic aerosols influence their reactivity? Measure the loss of ozone and evaluate uptake kinetics. Key tasks: Laboratory work and data analysis Tutors: Sarah Steimer, Markus Ammann (PSI) Tel. +41 56 310 4049 markus.ammann@psi.ch Ozone uptake on tannic acid

  10. MSc/BSc Thesis Topics 2012: summary Topic: Advisors: Topic 1: Sensitivity of model simulations to resolution Andrea Stenke Topic 2: Climate effects of regional nuclear conflicts Andrea Stenke Topic 3a: Indicators of Brewer-Dobson circulation strength Eugene Rozanov, Tom Peter Topic 3b: T-dependence of stratospheric ozone content Eugene Rozanov, Tom Peter Topic 3c: Tropospheric climate in CCMs Eugene Rozanov, Tom Peter Topic 3d: CCM heating rates, e.g. after volcanic eruption Eugene Rozanov, Tom Peter Topic 4: Ozonolysisoforganicaerosolproxies Sarah Steimer, Markus Ammann Atmospheric Chemistry Group 7 potential topics

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