Browsing by Author "Sokhi, Ranjeet"

Now showing items 1-20 of 28

    • Advances in air quality research – current and emerging challenges 

      Sokhi, Ranjeet; Moussiopoulos, Nicolas; Baklanov, Alexander; Bartzis, John; Coll, Isabelle; Finardi, Sandro; Friedrich, Rainer; Geels, Camilla; Grönholm, Tia; Halenka, Tomas; Ketzel, Matthias; Maragkidou, Androniki; Matthias, Volker; Moldanova, Jana; Ntziachristos, Leonidas; Schäfer, Klaus; Suppan, Peter; Tsegas, George; Carmichael, Greg; Franco, Vicente; Hanna, Steve; Jalkanen, Jukka-Pekka; . Velders, Guus J. M.; Kukkonen, Jaakko (2022-04-11)
      This review provides a community’s perspective on air quality research focusing mainly on developmentsover the past decade. The article provides perspectives on current and future challenges as well asresearch needs for ...

    • Analysis of meteorology-chemistry interactions during air pollution episodes using online coupled models within AQMEII Phase-2 

      Kong, Xin; Forkel, Renate; Sokhi, Ranjeet; Suppan, Peter; Baklanov, Alexander; Gauss, Michael; Brunner, Dominik; Barò, Rocìo; Balzarini, Alessandra; Chemel, C.; Curci, Gabriele; Jiménez-Guerrero, Pedro; Hirtl, Marcus; Honzakj, Luka; Im, Ulas; Pérez, Juan; Pirovano, Guido; San Jose, Roberto; Schlünzenm, Heinke; Tsegas, George; Tuccella, Paolo; Werhahn, Johannes; Žabkar, Rahela; Galmarini, Stefano (2015-08)
      This study reviews the top ranked meteorology and chemistry interactions in online coupled models recommended by an experts’ survey conducted in COST Action EuMetChem and examines the sensitivity of those interactions ...

    • Analysis of UK and European NOx and VOC emission scenarios in the Defra model intercomparison exercise 

      Derwent, Richard; Beevers, Sean; Chemel, C.; Cooke, Sally; Vazhappilly Francis, Xavier; Fraser, Andrea; Heal, Mathew R.; Kitwiroon, Nutthida; Lingard, Justin; Redington, Alison; Sokhi, Ranjeet; Vieno, Massimo (2014-09)
      Simple emission scenarios have been implemented in eight United Kingdom air quality models with the aim of assessing how these models compared when addressing whether photochemical ozone formation in southern England was ...

    • An approach to predict population exposure to ambient air PM2.5 concentrations and its dependence on population activity for the megacity London 

      Singh, Vikas; Sokhi, Ranjeet; Kukkonen, Jaakko (2020-02-01)
      A comprehensive modelling approach has been developed to predict population exposure to the ambient air PM2.5 concentrations in different microenvironments in London. The modelling approach integrates air pollution dispersion ...

    • Assessment of the sensitivity of model responses to urban emission changes in support of emission reduction strategies 

      Bessagnet, Bertrand; Cuvelier, Kees; de Meij, Alexander; Monteiro, Alexandra; Pisoni, Enrico; Thunis, Philippe; Violaris, Angelos; Kushta, Jonilda; Denby, Bruce R.; Mu, Qing; Wærsted, Eivind G.; Vivanco, Marta G.; Theobald, Mark R.; Gil, Victoria; Sokhi, Ranjeet; Momoh, John-Kester; Alyuz Ozdemir, Ummugulsum; VPM, Rajasree; Kumar, Saurabh; Bossioli, Elissavet; Methymaki, Georgia; Brzoja, Darijo; Milić, Velimir; Cholakian, Arineh; Pennel, Romain; Mailler, Sylvain; Menut, Laurent; Briganti, Gino; Mircea, Mihaela; Flandorfer, Claudia; Baumann-Stanzer, Kathrin; Hutsemékers, Virginie; Trimpeneers, Elke (2023-12-26)
      The sensitivity of air quality model responses to modifications in input data (e.g. emissions, meteorology and boundary conditions) or model configurations is recognized as an important issue for air quality modelling ...

    • Changes in extreme events over Asia for present and future climate conditions based on a modelling analysis of atmospheric circulation anomalies 

      Sokhi, Ranjeet; Tiwari, P. R.; de Medeiros , Joanna S N; Folberth, Gerd; Collins, W.J. (2021-10)
      Synoptic weather and larger scale circulation patterns are closely coupled and have a major influence on regional weather and extreme events. This study examines the role of regional circulations on meteorology and extreme ...

    • Comparison of statistical and dynamical downscaling methods for seasonal-scale winter precipitation predictions over north India 

      Tiwari, P. R.; S. C. Kar; Mohanty, U. C.; Sagnik Dey; P. Sinha; M. S. Shekhar; Sokhi, Ranjeet (2018-11-12)
      The main aim of the present study is to analyse the capabilities of two downscaling approaches (statistical and dynamical) in predicting wintertime seasonal precipitation over north India. For this purpose, a canonical ...

    • COVID-19 lockdown induced changes in NO2 levels across India observed by multi-satellite and surface observations 

      Biswal, Akash; Singh, Vikas; Singh, Shweta; Sokhi, Ranjeet; Kesarkar, Amit P.; Ravindra, Khaiwal; Chipperfield, Martyn P.; Dhomse, Sandip S.; Pope, Richard J.; Singh, Tanbir; Mor, Suman (2021-04-01)
      We have estimated the spatial changes in NO 2levels over different regions of India during the COVID-19 lockdown (25 March-3 May 2020) using the satellite-based tropospheric column NO 2observed by the Ozone Monitoring ...

    • Evaluation of an urban modelling system against three measurement campaigns in London and Birmingham 

      Sokhi, Ranjeet (2017-01-01)
      The results of three measurement campaigns are presented in this study. The campaigns have been undertaken at an urban roadside site in London, for more than a year and three months in 2003e2004 and for a year in 2008, and ...

    • Evaluation of the performance of four chemical transport models in predicting the aerosol chemical composition in Europe in 2005 

      Prank, Marje; Sofiev, Mikhail; Tsyro, Svetlana; Hendriks, Carlijn; Semeena, Valiyaveetil; Vazhappilly Francis, Xavier; Butler, Tim; Denier van der Gon, Hugo; Friedrich, Rainer; Kong, Xin; Hendricks, Johannes; Lawrence, Mark; Righi, Mattia; Samaras, Zissis; Sausen, Robert; Kukkonen, Jaakko; Sokhi, Ranjeet (2016-05-18)
      Four regional chemistry transport models were applied to simulate the concentration and composition of particulate matter (PM) in Europe for 2005 with horizontal resolution 20 km. The modelled concentrations were compared ...

    • Exposure to ambient air pollution and elevated blood levels of gamma-glutamyl transferase in a large Austrian cohort 

      Sokhi, Ranjeet (2023-07-20)
      Gamma glutamyl transferase (GGT) is related to oxidative stress and an indicator for liver damage. We investigated the association between air pollution and GGT in a large Austrian cohort (N = 116,109) to better understand ...

    • A global observational analysis to understand changes in air quality during exceptionally low anthropogenic emission 

      Sokhi, Ranjeet (2021-08-20)
      This global study, which has been coordinated by the World Meteorological Organization Global Atmospheric Watch (WMO/GAW) programme, aims to understand the behaviour of key air pollutant species during the COVID-19 pandemic ...

    • Insights into the deterministic skill of air quality ensembles from the analysis of AQMEII data 

      Kioutsioukis, I.; Im, U.; Solazzo, E.; Bianconi, R.; Badia, A.; Balzarini, A.; Baró, R.; Bellasio, R.; Brunner, D.; Chemel, Charles; Curci, G.; Denier van der Gon, H.; Flemming, J.; Forkel, R.; Giordano, L.; Jiménez-Guerrero, P.; Hirtl, M.; Jorba, O.; Manders-Groot, A.; Neal, L.; Pérez, J. L.; Pirovano, G.; San Jose, R.; Savage, N.; Schroder, W.; Sokhi, Ranjeet; Syrakov, D.; Tuccella, P.; Werhahn, J.; Wolke, R.; Hogrefe, C.; Galmarini, S. (2016-12-20)
      Simulations from chemical weather models are subject to uncertainties in the input data (e.g. emission inventory, initial and boundary conditions) as well as those intrinsic to the model (e.g. physical parameterization, ...

    • Modelling the dispersion of particle numbers in five European cities 

      Kukkonen, J.; Karl, M.; Keuken, M. P.; Denier van der Gon, H. A. C.; Denby, B. R.; Singh, Vikas; Douros, J.; Manders, A.; Samaras, Z.; Moussiopoulos, N.; Jonkers, S.; Aarnio, M.; Karppinen, A.; Kangas, L.; Lützenkirchen, S.; Petaja, T.; Vouitsis, I.; Sokhi, Ranjeet (2016-02-04)
      We present an overview of the modelling of particle number concentrations (PNCs) in five major European cities, namely Helsinki, Oslo, London, Rotterdam, and Athens, in 2008. Novel emission inventories of particle numbers ...

    • Monitoring and modelling of NO2 and fine particles for urban air quality management 

      Sokhi, Ranjeet; Bualert, S.; Luhana, L.; Tremper, A.H.; Burton, Agneta (2000-09)

    • New Directions : Understanding interactions of air quality and climate change at regional scales 

      Alapaty, Kiran; Mathur, Rohit; Pleim, Jonathan; Hogrefe, Christian; Rao, S. Trivikrama; Ramaswamy, Venkatachalam; Galmarini, Stefano; Schaap, Martijn; Makar, Paul; Vautard, Robert; Baklanov, Alexander; Kallos, George; Vogel, Bernhard; Sokhi, Ranjeet (2012-03)
      The estimates of the short-lived climate forcers’ (SLCFs) impacts and mitigation effects on the radiation balance have large uncertainty because the current global model set-ups and simulations contain simplified ...

    • Online Coupled Regional Meteorology Chemistry Models in Europe : Current Status and Prospects 

      Baklanov, Alexander; Schluenzen, Heinke; Suppan, Peter; Baldasano, Jose; Brunner, Dominik; Aksoyoglu, Sebnem; Carmichael, Greg; Douros, John; Flemming , Johannes; Forkel, Renate; Galmarini, Stefano; Gauss, Michael; Grell, Georg; Hirtl , Marcus; Joffre, Sylvain; Jorba, Oriol; Kaas, Eigil; Kaasik, Marko; Kallos, George; Kong, Xin; Korsholm, Ulrik; Kurganskiy, A.; Kushta, J.; Lohmann, U.; Mahura, A.; Manders-Groot, A.; Maurizi, A.; Moussiopoulos, N.; Rao, S.T.; Savage, N.; Seigneur, C.; Sokhi, Ranjeet; Solazzo, E.; Solomos, S.; Sorensen, B.; Tsegas, G.; Vignati, E.; Vogel, B.; Zhang, Y. (2014)
      Online coupled mesoscale meteorology atmospheric chemistry models have undergone a rapid evolution in recent years. Although mainly developed by the air quality modelling community, these models are also of interest for ...

    • Particulate matter air pollution components and incidence of cancers of the stomach and the upper aerodigestive tract in the European Study of Cohorts of Air Pollution Effects (ESCAPE) 

      Weinmayr, Gudrun; Pedersen, Marie; Stafoggia, Massimo; Andersen, Zorana J.; Galassi, Claudia; Munkenast, Jule; Jaensch, Andrea; Oftedal, Bente; Krog, Norun H.; Aamodt, Geir; Pyko, Andrei; Pershagen, Göran; Korek, Michal; De Faire, Ulf; Pedersen, Nancy L.; Östenson, Claes Göran; Rizzuto, Debora; Sørensen, Mette; Tjønneland, Anne; Bueno-de-Mesquita, Bas; Vermeulen, Roel; Eeftens, Marloes; Concin, Hans; Lang, Alois; Wang, Meng; Tsai, Ming Yi; Ricceri, Fulvio; Sacerdote, Carlotta; Ranzi, Andrea; Cesaroni, Giulia; Forastiere, Francesco; de Hoogh, Kees; Beelen, Rob; Vineis, Paolo; Kooter, Ingeborg; Sokhi, Ranjeet; Brunekreef, Bert; Hoek, Gerard; Raaschou-Nielsen, Ole; Nagel, Gabriele (2018-11-01)
      Introduction: Previous analysis from the large European multicentre ESCAPE study showed an association of ambient particulate matter <2.5 μm (PM2.5) air pollution exposure at residence with the incidence of gastric cancer. ...

    • Proceedings of Abstracts 10th International Conference on Air Quality Science and Application 

      Sokhi, Ranjeet; Singh, Vikas; Medeiros, Joana; Farrow, Aidan; Finardi, S.; Radice, Paola; Atmospheric Dynamics & Air Quality; Centre for Atmospheric and Climate Physics Research; School of Physics, Astronomy and Mathematics (University of Hertfordshire, 2016-03-14)
      This 10th International Conference in Air Quality - Science and Application is being held in the elegant and vibrant city of Milan, Italy. Our local hosts are ARIANET and ARPA Lombardia both of whom play a leading role in ...

    • Proceedings of Abstracts 11th International Conference on Air Quality Science and Application 

      Sokhi, Ranjeet; Tiwari, P. R.; Gállego, María José; Craviotto Arnau, Joan Marc; Castells Guiu, Cristina; Singh, Vikas; Atmospheric Dynamics & Air Quality; Centre for Atmospheric and Climate Physics Research; School of Physics, Astronomy and Mathematics (University of Hertfordshire, 2018-03-12)
      The 11th International Conference on Air Quality - Science and Application is being held in the cosmopolitan city of Barcelona, Spain. Our local hosts are MANNERS and Ajuntament De Barcelona. The meeting is a continuation ...