Search Results - "HAYWOOD, Jim M"

Asymmetric forcing from stratospheric aerosols impacts Sahelian rainfall by Haywood, Jim M., Jones, Andy, Bellouin, Nicolas, Stephenson, David

“…Sahelian drought is investigated by analysing de-trended observations between 1900 and 2010, which show that substantial Northern Hemisphere volcanic eruptions…”
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Southern Ocean albedo, inter-hemispheric energy transports and the double ITCZ: global impacts of biases in a coupled model by Hawcroft, Matt, Haywood, Jim M., Collins, Mat, Jones, Andy, Jones, Anthony C., Stephens, Graeme

“…A causal link has been invoked between inter-hemispheric albedo, cross-equatorial energy transport and the double-Intertropical Convergence Zone (ITCZ) bias in…”
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The contrasting climate response to tropical and extratropical energy perturbations by Hawcroft, Matt, Haywood, Jim M., Collins, Mat, Jones, Andy

“…The link between cross-equatorial energy transport, the double-intertropical convergence zone (DI) problem and biases in tropical and extratropical albedo and…”
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The impact of stratospheric aerosol intervention on the North Atlantic and Quasi-Biennial Oscillations in the Geoengineering Model Intercomparison Project (GeoMIP) G6sulfur experiment by Jones, Andy, Haywood, Jim M, Scaife, Adam A, Boucher, Olivier, Henry, Matthew, Kravitz, Ben, Lurton, Thibaut, Nabat, Pierre, Niemeier, Ulrike, Séférian, Roland, Tilmes, Simone, Visioni, Daniele

“…As part of the Geoengineering Model Intercomparison Project a numerical experiment known as G6sulfur has been designed in which temperatures under a…”
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The impact of equilibrating hemispheric albedos on tropical performance in the HadGEM2‐ES coupled climate model by Haywood, Jim M., Jones, Andy, Dunstone, Nick, Milton, Sean, Vellinga, Michael, Bodas‐Salcedo, Alejandro, Hawcroft, Matt, Kravitz, Ben, Cole, Jason, Watanabe, Shingo, Stephens, Graeme

“…The Earth's hemispheric reflectances are equivalent to within ± 0.2 Wm−2, even though the Northern Hemisphere contains a greater proportion of higher…”
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The impact of abrupt suspension of solar radiation management (termination effect) in experiment G2 of the Geoengineering Model Intercomparison Project (GeoMIP) by Jones, Andy, Haywood, Jim M., Alterskjær, Kari, Boucher, Olivier, Cole, Jason N. S., Curry, Charles L., Irvine, Peter J., Ji, Duoying, Kravitz, Ben, Egill Kristjánsson, Jón, Moore, John C., Niemeier, Ulrike, Robock, Alan, Schmidt, Hauke, Singh, Balwinder, Tilmes, Simone, Watanabe, Shingo, Yoon, Jin-Ho

“…We have examined changes in climate which result from the sudden termination of geoengineering after 50 years of offsetting a 1% per annum increase in CO2…”
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Evaluating biases in filter-based aerosol absorption measurements using photoacoustic spectroscopy by Davies, Nicholas W, Fox, Cathryn, Szpek, Kate, Cotterell, Michael I, Taylor, Jonathan W, Allan, James D, Williams, Paul I, Trembath, Jamie, Haywood, Jim M, Langridge, Justin M

“…Biases in absorption coefficients measured using a filter-based absorption photometer (Tricolor Absorption Photometer, or TAP) at wavelengths of 467, 528 and…”
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The roles of aerosol, water vapor and cloud in future global dimming/brightening by Haywood, Jim M., Bellouin, Nicolas, Jones, Andy, Boucher, Olivier, Wild, Martin, Shine, Keith P.

“…Observational evidence indicates significant regional trends in solar radiation at the surface in both all‐sky and cloud‐free conditions. Negative trends in…”
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Evidence of internal mixing of African dust and biomass burning particles by individual particle analysis using electron beam techniques by Hand, Victoria L., Capes, Gerard, Vaughan, David J., Formenti, Paola, Haywood, Jim M., Coe, Hugh

“…In this investigation, the interaction between aerosols derived from biomass burning and dust aerosol is the focus of interest. We have examined the morphology…”
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Can desert dust explain the outgoing longwave radiation anomaly over the Sahara during July 2003? by Haywood, Jim M., Allan, Richard P., Culverwell, Ian, Slingo, Tony, Milton, Sean, Edwards, John, Clerbaux, Nicolas

“…Measurements of the top‐of‐the‐atmosphere outgoing longwave radiation (OLR) for July 2003 from Meteosat‐7 are used to assess the performance of the numerical…”
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The Curious Nature of the Hemispheric Symmetry of the Earth’s Water and Energy Balances by Stephens, Graeme L., Hakuba, Maria Z., Hawcroft, Matt, Haywood, Jim M., Behrangi, Ali, Kay, Jennifer E., Webster, Peter J

“…This paper presents new estimates of the hemispheric energy balance based on an assembly of radiative flux and ocean heat data. Further, it provides an…”
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A method to represent subgrid-scale updraft velocity in kilometer-scale models: Implication for aerosol activation by Malavelle, Florent F., Haywood, Jim M., Field, Paul R., Hill, Adrian A., Abel, Steven J., Lock, Adrian P., Shipway, Ben J., McBeath, Kirsty

“…Updraft velocities strongly control the activation of aerosol particles or that component that act as cloud condensation nuclei (CCN). For kilometer‐scale…”
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Aerosol optical depths over North Africa: 2. Modeling and model validation by Greed, Glenn, Haywood, Jim M., Milton, Sean, Keil, Andreas, Christopher, Sundar, Gupta, Pawan, Highwood, Eleanor J.

“…An operational dust forecasting model is developed by including the Met Office Hadley Centre climate model dust parameterization scheme, within a Met Office…”
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Sensitivity and accuracy of refractive index retrievals from measured extinction and absorption cross sections for mobility-selected internally mixed light absorbing aerosols by Cotterell, Michael I., Szpek, Kate, Haywood, Jim M., Langridge, Justin M.

“…Aerosol refractive index (RI) is related to particle composition and density, is used in optical spectroscopy studies to probe aerosol physiochemical…”
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Strong Constraints on Aerosol-Cloud Interactions from Volcanic Eruptions by Malavelle, Florent F., Haywood, Jim M., Jones, Andy, Gettelman, Andrew, Clarisse, Lieven, Bauduin, Sophie, Allan, Richard P., Karset, Inger Helene H., Kristjansson, Jon Egill, Oreopoulos, Lazaros, Cho, Nayeong, Lee, Dongmin, Bellouin, Nicolas, Boucher, Olivier, Grosvenor, Daniel P., Carslaw, Ken S., Dhomse, Sandip, Mann, Graham W., Schmidt, Anja, Coe, Hugh, Hartley, Margaret E., Dalvi, Mohit, Hill, Adrian A., Johnson, Ben T., Johnson, Colin E., Knight, Jeff R., O’Connor, Fiona M., Partridge, Daniel G., Stier, Philip, Myhre, Gunnar, Platnick, Steven, Stephens, Graeme L., Takahashi, Hanii, Thordarson, Thorvaldur

“…Aerosols have a potentially large effect on climate, particularly through their interactions with clouds, but the magnitude of this effect is highly uncertain…”
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Climate intervention using marine cloud brightening (MCB) compared with stratospheric aerosol injection (SAI) in the UKESM1 climate model by Haywood, Jim M., Jones, Andy, Jones, Anthony C., Halloran, Paul, Rasch, Philip J.

“…The difficulties in using conventional mitigation techniques to maintain global-mean temperatures well below 2 ∘C compared with pre-industrial levels have been…”
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Projected future changes in extreme precipitation over China under stratospheric aerosol intervention in the UKESM1 climate model by Wang, Ou, Liang, Ju, Gu, Yuchen, Haywood, Jim M, Chen, Ying, Fang, Chenwei, Wang, Qin'geng

“…Extreme precipitation events are linked to severe economic losses and casualties in China every year; hence, exploring the potential mitigation strategies to…”
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Climate response to off-equatorial stratospheric sulfur injections in three Earth system models – Part 1: Experimental protocols and surface changes by Visioni, Daniele, Bednarz, Ewa M, Lee, Walker R, Kravitz, Ben, Jones, Andy, Haywood, Jim M, MacMartin, Douglas G

“…There is now substantial literature on climate model studies of equatorial or tropical stratospheric SO2 injections that aim to counteract the surface warming…”
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North Atlantic Oscillation response in GeoMIP experiments G6solar and G6sulfur: why detailed modelling is needed for understanding regional implications of solar radiation management by Jones, Andy, Haywood, Jim M, Jones, Anthony C, Tilmes, Simone, Kravitz, Ben, Robock, Alan

“…The realization of the difficulty of limiting global-mean temperatures to within 1.5 or 2.0 ∘C above pre-industrial levels stipulated by the 21st Conference of…”
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Impacts of reducing scattering and absorbing aerosols on the temporal extent and intensity of South Asian summer monsoon and East Asian summer monsoon by Fang, Chenwei, Haywood, Jim M, Liang, Ju, Johnson, Ben T, Chen, Ying, Zhu, Bin

“…The vast majority of reductions in aerosol emissions are projected to take place in the near future; however, associated impacts on the large-scale circulation…”
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