Description: Das Projekt "Quantifying the sensitivity of the hydrological cycle to increasing temperature" wird/wurde gefördert durch: Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung. Es wird/wurde ausgeführt durch: Eidgenössische Technische Hochschule Zürich, Institut für Atmosphäre und Klima.Since the preindustrial period, the concentration of greenhouse gases in the atmosphere is increasing due to human activities. It is well understood that greenhouse gases such as carbon dioxide act to increase the temperature of the atmosphere. Warmer air can consequently hold more moisture, which again results in an increase in precipitation. Global climate models are currently the most powerful tool to investigate the future climate but interestingly, the simulated increase in precipitation is smaller by a factor of two compared to observations. Since changes in precipitation will affect numerous ecosystems as well as food and water security, it is important to understand the reasons for the discrepancy between climate models and observations. On one hand, observations might overestimate the precipitation increase because of too short available time series or inadequacies in measurement systems. On the other hand, climate models might fail at simulating important processes leading to the precipitation formation. In a first step, different observation datasets will be analysed and compared. Then, simulations will be performed with a global climate model in order to investigate the mechanisms leading to precipitation and these results will be compared to already existing model datasets. The proposed project will allow to understand the nature of the discrepancy between climate models and observations. Overall, the project will inform policy makers about the future climate and allow them to agree on adequate adaptation measures.
SupportProgram
Origins: /Bund/UBA/UFORDAT
Tags: Messeinrichtung ? Gewächshaus ? Brunnen ? Globales Klimamodell ? Kohlendioxid ? Regenwasser ? Luft ? Gasförmiger Stoff ? Bewässerung ? Bildung ? Mensch ? Simulation ? Wasserkreislauf ? Zeitreihe ? Wasser ? Messung ? Klimamodell ? Maßnahme ? Atmosphäre ? Ernährungssicherheit ? Hydrologie ? Klima ? Klimawandel ? Lebensmittel ? Niederschlag ? Ökosystem ? Sicherheit ? Feuchtigkeit ? Treibhausgas ? Politik ? DAUER ? VERGLEICHEN ? PROJEKT ? PRAEZIPITATION ? WICHTIG ? EIN ? Werkzeug ? ZEITRAEUME ? SONSTIG ? ERGEBNIS ? Temperaturerhöhung ? UEBEREMPFINDLICHKEIT ? Erlass [Recht] ? Vermehrung ? UNSTIMMIGKEIT ? KURZ ? BETRACHTUNG ? DATENSATZ ? Konzentrat ? BESTEHEND ? VERARBEITEN ? MECHANISMEN ? VERFUEGBAR ?
License: cc-by-nc-nd/4.0
Language: Englisch/English
Time ranges: 2010-04-01 - 2012-12-31
Accessed 1 times.