Modelling winter conditions of streets and pavements in a changing climate

Ilmatieteen laitoksen tiesäämalli RoadSurfia, säämalli HARMONIE-AROME:a, ilman ja alustan vuorovaikutuksia kuvaavaa malliyhdistelmä SURFEX:ia ja kaupungin energiatasemalli TEB:iä käytettiin mallintamaan tulevaisuuden ilmaston tiesääolosuhteita Helsingissä ja pääkaupunkiseudulla. Käytetyn hilaruuduko...

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Main Author: Saranko, Olli
Other Authors: Matemaattis-luonnontieteellinen tiedekunta, Faculty of Sciences, Fysiikan laitos, Department of Physics, Jyväskylän yliopisto, University of Jyväskylä
Format: Master's thesis
Language:eng
Published: 2019
Subjects:
Online Access: https://jyx.jyu.fi/handle/123456789/64829
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author Saranko, Olli
author2 Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics Jyväskylän yliopisto University of Jyväskylä
author_facet Saranko, Olli Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics Jyväskylän yliopisto University of Jyväskylä Saranko, Olli Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics Jyväskylän yliopisto University of Jyväskylä
author_sort Saranko, Olli
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description Ilmatieteen laitoksen tiesäämalli RoadSurfia, säämalli HARMONIE-AROME:a, ilman ja alustan vuorovaikutuksia kuvaavaa malliyhdistelmä SURFEX:ia ja kaupungin energiatasemalli TEB:iä käytettiin mallintamaan tulevaisuuden ilmaston tiesääolosuhteita Helsingissä ja pääkaupunkiseudulla. Käytetyn hilaruudukon tarkkuus oli SURFEX/TEB-mallilla 500 m ja 2,5 km HARMONIE-AROME-sääajoissa. Tiesää- ja jalankulkuolosuhteita tutkittiin erikseen RoadSurfin eri asetuksilla. Mallinnetut ilmaston muutokset perustuvat RCP8.5-kehityskaareen ja ilmastonmuutosmalleihin. Aikahorisontiksi valittiin 2040–2069. Tämä tutkimus on osa kahta EU-projektia, URCLIM:ia ja iSCAPE:a. Mallien ennustamat sääolosuhteiden muutokset ovat merkittävimpiä ilman lämpötilassa. Mallinnetut tulokset osoittavat, että sekä vaikeat tieolosuhteet että liukkaat jalankulkuolosuhteet vähenevät merkittävästi. Sekä tiesää- että jalankulkuolosuhteissa näkyy selviä, mutta ei niin merkittäviä, riippuvuuksia kaupungin rakennustyypistä. FMI’s road weather model RoadSurf, weather model HARMONIE-AROME and surface modelling platform SURFEX with Town Energy Balance model TEB were used to model weather and especially road and pedestrian weather conditions in a changing climate in the Helsinki capital region. The grid resolution was 500 m for SURFEX/TEB and 2.5 km for HARMONIE-AROME. The simulated effects of climate change were based on the Representative Concentration Pathway RCP8.5 and several climate change models. The modelled time horizon was 2040–2069. The study is part of two EU-projects, URCLIM and iSCAPE. The climatological changes are most significant in air temperature forcing. The model results show that the number of difficult road and pedestrian conditions decrease significantly. Both road and pedestrian conditions depend clearly on the urban morphology, but these dependencies are not very strong.
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spellingShingle Saranko, Olli Modelling winter conditions of streets and pavements in a changing climate RoadSurf road weather NWP road conditions pedestrian conditions RCP8.5 2055 climate SURFEX TEB HARMONIE-AROME URCLIM iSCAPE Fysiikka Physics 4021 keli ilmastonmuutokset sää climate changes weather
title Modelling winter conditions of streets and pavements in a changing climate
title_full Modelling winter conditions of streets and pavements in a changing climate
title_fullStr Modelling winter conditions of streets and pavements in a changing climate Modelling winter conditions of streets and pavements in a changing climate
title_full_unstemmed Modelling winter conditions of streets and pavements in a changing climate Modelling winter conditions of streets and pavements in a changing climate
title_short Modelling winter conditions of streets and pavements in a changing climate
title_sort modelling winter conditions of streets and pavements in a changing climate
title_txtP Modelling winter conditions of streets and pavements in a changing climate
topic RoadSurf road weather NWP road conditions pedestrian conditions RCP8.5 2055 climate SURFEX TEB HARMONIE-AROME URCLIM iSCAPE Fysiikka Physics 4021 keli ilmastonmuutokset sää climate changes weather
topic_facet 2055 climate 4021 Fysiikka HARMONIE-AROME NWP Physics RCP8.5 RoadSurf SURFEX TEB URCLIM climate changes iSCAPE ilmastonmuutokset keli pedestrian conditions road conditions road weather sää weather
url https://jyx.jyu.fi/handle/123456789/64829 http://www.urn.fi/URN:NBN:fi:jyu-201906253414
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