Search Results - "Williams, Jonny"

The BRIDGE HadCM3 family of climate models: HadCM3@Bristol v1.0 by Valdes, Paul J., Armstrong, Edward, Badger, Marcus P. S., Bradshaw, Catherine D., Bragg, Fran, Crucifix, Michel, Davies-Barnard, Taraka, Day, Jonathan J., Farnsworth, Alex, Gordon, Chris, Hopcroft, Peter O., Kennedy, Alan T., Lord, Natalie S., Lunt, Dan J., Marzocchi, Alice, Parry, Louise M., Pope, Vicky, Roberts, William H. G., Stone, Emma J., Tourte, Gregory J. L., Williams, Jonny H. T.

“…Understanding natural and anthropogenic climate change processes involves using computational models that represent the main components of the Earth system:…”
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Amplified surface warming in the south-west Pacific during the mid-Pliocene (3.3–3.0 Ma) and future implications by Grant, Georgia R, Williams, Jonny H. T, Naeher, Sebastian, Seki, Osamu, McClymont, Erin L, Patterson, Molly O, Haywood, Alan M, Behrens, Erik, Yamamoto, Masanobu, Johnson, Katelyn

“…Based on Nationally Determined Contributions concurrent with Shared Socioeconomic Pathways (SSPs) 2-4.5, the IPCC predicts global warming of 2.1–3.5 ∘C (very…”
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Improving the Southern Ocean cloud albedo biases in a general circulation model by Varma, Vidya, Morgenstern, Olaf, Field, Paul, Furtado, Kalli, Williams, Jonny, Hyder, Patrick

“…The present generation of global climate models is characterised by insufficient reflection of short-wave radiation over the Southern Ocean due to a…”
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Evaluation of Southern Ocean cloud in the HadGEM3 general circulation model and MERRA-2 reanalysis using ship-based observations by Kuma, Peter, McDonald, Adrian J, Morgenstern, Olaf, Alexander, Simon P, Cassano, John J, Garrett, Sally, Halla, Jamie, Hartery, Sean, Harvey, Mike J, Parsons, Simon, Plank, Graeme, Varma, Vidya, Williams, Jonny

“…Southern Ocean (SO) shortwave (SW) radiation biases are a common problem in contemporary general circulation models (GCMs), with most models exhibiting a…”
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Projections of Future Marine Heatwaves for the Oceans Around New Zealand Using New Zealand's Earth System Model by Behrens, Erik, Rickard, Graham, Rosier, Suzanne, Williams, Jonny, Morgenstern, Olaf, Stone, Dáithí

“…This paper investigates marine heatwave (MHW) characteristics in New Zealand's Earth System Model (NZESM) simulations for present-day conditions and how they…”
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Reappraisal of the Climate Impacts of Ozone‐Depleting Substances by Morgenstern, Olaf, O'Connor, Fiona M, Johnson, Ben T, Zeng, Guang, Mulcahy, Jane P, Williams, Jonny, Teixeira, Joao, Michou, Martine, Nabat, Pierre, Horowitz, Larry W, Naik, Vaishali, Sentman, Lori T, Deushi, Makoto, Bauer, Susanne E, Tsigaridis, Kostas, Shindell, Drew T, Kinnison, Douglas E

“…We assess the effective radiative forcing due to ozone‐depleting substances using models participating in the Aerosols and Chemistry and Radiative Forcing…”
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Attribution of Stratospheric and Tropospheric Ozone Changes Between 1850 and 2014 in CMIP6 Models by Morgenstern, Olaf, Williams, Jonny H T, O'Connor, Fiona M, Griffiths, Paul T, Keeble, James, Deushi, Makoto, Horowitz, Larry W, Naik, Vaishali, Emmons, Louisa K, Abraham, N Luke, Archibald, Alexander T, Bauer, Susanne E, Hassler, Birgit, Michou, Martine, Mills, Michael J, Murray, Lee T, Oshima, Naga, Sentman, Lori T, Tilmes, Simone, Tsigaridis, Kostas, Young, Paul J

“…We quantify the impacts of halogenated ozone-depleting substances (ODSs), greenhouse gases (GHGs), and short-lived ozone precursors on ozone changes between…”
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Local Grid Refinement in New Zealand's Earth System Model: Tasman Sea Ocean Circulation Improvements and Super‐Gyre Circulation Implications by Behrens, Erik, Williams, Jonny, Morgenstern, Olaf, Sutton, Phil, Rickard, Graham, Williams, Michael J. M.

“…This paper describes the development of New Zealand's Earth System Model (NZESM) and evaluates its performance against its parent model (United Kingdom Earth…”
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The Impacts of Aerosol Emissions on Historical Climate in UKESM1 by Seo, Jeongbyn, Shim, Sungbo, Kwon, Sang-Hoon, Boo, Kyung-On, Kim, Yeon-Hee, O’Connor, Fiona, Johnson, Ben, Dalvi, Mohit, Folberth, Gerd, Teixeira, Joao, Mulcahy, Jane, Hardacre, Catherine, Turnock, Steven, Woodward, Stephanie, Abraham, Luke, Keeble, James, Griffiths, Paul, Archibald, Alex, Richardson, Mark, Dearden, Chris, Carslaw, Ken, Williams, Jonny, Zeng, Guang, Morgenstern, Olaf

“…As one of the main drivers for climate change, it is important to understand changes in anthropogenic aerosol emissions and evaluate the climate impact…”
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The sensitivity of Southern Ocean aerosols and cloud microphysics to sea spray and sulfate aerosol production in the HadGEM3-GA7.1 chemistry–climate model by Revell, Laura E, Kremser, Stefanie, Hartery, Sean, Harvey, Mike, Mulcahy, Jane P, Williams, Jonny, Morgenstern, Olaf, McDonald, Adrian J, Varma, Vidya, Bird, Leroy, Schuddeboom, Alex

“…With low concentrations of tropospheric aerosol, the Southern Ocean offers a “natural laboratory” for studies of aerosol–cloud interactions. Aerosols over the…”
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The sensitivity of Southern Ocean atmospheric dimethyl sulfide (DMS) to modeled oceanic DMS concentrations and emissions by Bhatti, Yusuf A, Revell, Laura E, Schuddeboom, Alex J, McDonald, Adrian J, Archibald, Alex T, Williams, Jonny, Venugopal, Abhijith U, Hardacre, Catherine, Behrens, Erik

“…The biogeochemical formation of dimethyl sulfide (DMS) from the Southern Ocean is complex, dynamic, and driven by physical, chemical, and biological processes…”
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Implementation of U.K. Earth System Models for CMIP6 by Sellar, Alistair A., Walton, Jeremy, Jones, Colin G., Wood, Richard, Abraham, Nathan Luke, Andrejczuk, Miroslaw, Andrews, Martin B., Andrews, Timothy, Archibald, Alex T., Mora, Lee, Dyson, Harold, Elkington, Mark, Ellis, Richard, Florek, Piotr, Good, Peter, Gohar, Laila, Haddad, Stephen, Hardiman, Steven C., Hogan, Emma, Iwi, Alan, Jones, Christopher D., Johnson, Ben, Kelley, Douglas I., Kettleborough, Jamie, Knight, Jeff R., Köhler, Marcus O., Kuhlbrodt, Till, Liddicoat, Spencer, Linova‐Pavlova, Irina, Mizielinski, Matthew S., Morgenstern, Olaf, Mulcahy, Jane, Neininger, Erica, O'Connor, Fiona M., Petrie, Ruth, Ridley, Jeff, Rioual, Jean‐Christophe, Roberts, Malcolm, Robertson, Eddy, Rumbold, Steven, Seddon, Jon, Shepherd, Harry, Shim, Sungbo, Stephens, Ag, Teixiera, Joao C., Tang, Yongming, Williams, Jonny, Wiltshire, Andy, Griffiths, Paul T.

“…We describe the scientific and technical implementation of two models for a core set of experiments contributing to the sixth phase of the Coupled Model…”
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Assessment of pre-industrial to present-day anthropogenic climate forcing in UKESM1 by O'Connor, Fiona M, Abraham, N. Luke, Dalvi, Mohit, Folberth, Gerd A, Griffiths, Paul T, Hardacre, Catherine, Johnson, Ben T, Kahana, Ron, Keeble, James, Kim, Byeonghyeon, Morgenstern, Olaf, Mulcahy, Jane P, Richardson, Mark, Robertson, Eddy, Seo, Jeongbyn, Shim, Sungbo, Teixeira, João C, Turnock, Steven T, Williams, Jonny, Wiltshire, Andrew J, Woodward, Stephanie, Zeng, Guang

“…Quantifying forcings from anthropogenic perturbations to the Earth system (ES) is important for understanding changes in climate since the pre-industrial (PI)…”
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Regional Features of Long-Term Exposure to PM2.5 Air Quality over Asia under SSP Scenarios Based on CMIP6 Models by Shim, Sungbo, Sung, Hyunmin, Kwon, Sanghoon, Kim, Jisun, Lee, Jaehee, Sun, Minah, Song, Jaeyoung, Ha, Jongchul, Byun, Younghwa, Kim, Yeonhee, Turnock, Steven T., Stevenson, David S., Allen, Robert J., O’Connor, Fiona M., Teixeira, Joao C., Williams, Jonny, Johnson, Ben, Keeble, James, Mulcahy, Jane, Zeng, Guang

“…This study investigates changes in fine particulate matter (PM2.5) concentration and air-quality index (AQI) in Asia using nine different Coupled Model…”
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Regional ocean grid refinement and its effect on simulated atmospheric climate by Williams, Jonny, Behrens, Erik, Morgenstern, Olaf, Hayek, Wolfgang, Teixeira, João, Varma, Vidya

“…In this work we analyse the impact of including a regional, high-resolution ocean model on simulated atmospheric climate in a coupled earth system model. The…”
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Correcting a bias in a climate model with an augmented emulator by McNeall, Doug, Williams, Jonny, Betts, Richard, Booth, Ben, Challenor, Peter, Good, Peter, Wiltshire, Andy

“…A key challenge in developing flagship climate model configurations is the process of setting uncertain input parameters at values that lead to credible…”
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The impact of structural error on parameter constraint in a climate model by McNeall, Doug, Williams, Jonny, Booth, Ben, Betts, Richard, Challenor, Peter, Wiltshire, Andy, Sexton, David

“…Uncertainty in the simulation of the carbon cycle contributes significantly to uncertainty in the projections of future climate change. We use observations of…”
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Aerosol and Dimethyl Sulfide Sensitivity to Sulfate Chemistry Schemes by Bhatti, Yusuf A., Revell, Laura E., McDonald, Adrian J., Archibald, Alex T., Schuddeboom, Alex J., Williams, Jonny, Hardacre, Catherine, Mulcahy, Jane, Lin, Dongqi

“…Dimethyl sulfide (DMS) is the largest source of natural sulfur in the atmosphere and undergoes oxidation reactions resulting in gas‐to‐particle conversion to…”
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Synoptic weather regimes over Aotearoa New Zealand by Williams, J., Renwick, J.

“…This work provides an updated set of 12 dominant geopotential height fields over Aotearoa New Zealand defined using NCEP/NCAR reanalyses and provides an…”
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Precipitation changes within dynamical regimes in a perturbed climate Focus on Anticipated Changes in the Global Atmospheric Water Cycle by Williams, Jonny, Ringer, Mark A

“…Tropical precipitation and the character of its adjustment in response to climate warming have been examined in an ensemble of climate models. Partitioning the…”
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