Search Results - "France, J L"

Rising atmospheric methane: 2007–2014 growth and isotopic shift by Nisbet, E. G., Dlugokencky, E. J., Manning, M. R., Lowry, D., Fisher, R. E., France, J. L., Michel, S. E., Miller, J. B., White, J. W. C., Vaughn, B., Bousquet, P., Pyle, J. A., Warwick, N. J., Cain, M., Brownlow, R., Zazzeri, G., Lanoisellé, M., Manning, A. C., Gloor, E., Worthy, D. E. J., Brunke, E.‐G., Labuschagne, C., Wolff, E. W., Ganesan, A. L.

“…From 2007 to 2013, the globally averaged mole fraction of methane in the atmosphere increased by 5.7 ± 1.2 ppb yr−1. Simultaneously, δ13CCH4 (a measure of the…”
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Influence of grain shape on light penetration in snow by Libois, Q, Picard, G, France, J. L, Arnaud, L, Dumont, M, Carmagnola, C. M, King, M. D

“…The energy budget and the photochemistry of a snowpack depend greatly on the penetration of solar radiation in snow. Below the snow surface, spectral…”
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Evaluating methane inventories by isotopic analysis in the London region by Zazzeri, G., Lowry, D., Fisher, R. E., France, J. L., Lanoisellé, M., Grimmond, C. S. B., Nisbet, E. G.

“…A thorough understanding of methane sources is necessary to accomplish methane reduction targets. Urban environments, where a large variety of methane sources…”
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Air–snow transfer of nitrate on the East Antarctic Plateau – Part 2: An isotopic model for the interpretation of deep ice-core records by Erbland, J, Savarino, J, Morin, S, France, J. L, Frey, M. M, King, M. D

“…Unraveling the modern budget of reactive nitrogen on the Antarctic Plateau is critical for the interpretation of ice-core records of nitrate. This requires…”
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Atmospheric nitrogen oxides (NO and NO 2 ) at Dome C, East Antarctica, during the OPALE campaign by Frey, M M, Roscoe, H K, Kukui, A, Savarino, J, France, J L, King, M D, Legrand, M, Preunkert, S

“…Mixing ratios of the atmospheric nitrogen oxides NO and NO2 were measured as part of the OPALE (Oxidant Production in Antarctic Lands & Export) campaign at…”
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The diurnal variability of atmospheric nitrogen oxides (NO and NO 2 ) above the Antarctic Plateau driven by atmospheric stability and snow emissions by Frey, M. M, Brough, N, France, J. L, Anderson, P. S, Traulle, O, King, M. D, Jones, A. E, Wolff, E. W, Savarino, J

“…Atmospheric nitrogen oxides (NO and NO2) were observed at Dome C, East Antarctica (75.1° S, 123.3° E, 3233 m), for a total of 50 days, from 10 December 2009 to…”
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Hydroxyl radical and NOx production rates, black carbon concentrations and light-absorbing impurities in snow from field measurements of light penetration and nadir reflectivity of onshore and offshore coastal Alaskan snow by France, J. L., Reay, H. J., King, M. D., Voisin, D., Jacobi, H. W., Domine, F., Beine, H., Anastasio, C., MacArthur, A., Lee-Taylor, J.

“…Photolytic production rates of NO, NO2 and OH radicals in snow and the total absorption spectrum due to impurities in snowpack have been calculated for the…”
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Tracer Measurements in Growing Sea Ice Support Convective Gravity Drainage Parameterizations by Thomas, M., Vancoppenolle, M., France, J. L., Sturges, W. T., Bakker, D. C. E., Kaiser, J., Glasow, R.

“…Gravity drainage is the dominant process redistributing solutes in growing sea ice. Modeling gravity drainage is therefore necessary to predict physical and…”
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Surprisingly small HONO emissions from snow surfaces at Browning Pass, Antarctica by Beine, H. J., Amoroso, A., Dominé, F., King, M. D., Nardino, M., Ianniello, A., France, J. L.

“…Measured Fluxes of nitrous acid at Browning Pass, Antarctica were very low, despite conditions that are generally understood as favorable for HONO emissions,…”
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Very Strong Atmospheric Methane Growth in the 4 Years 2014–2017: Implications for the Paris Agreement by Nisbet, E. G., Manning, M. R., Dlugokencky, E. J., Fisher, R. E., Lowry, D., Michel, S. E., Myhre, C. Lund, Platt, S. M., Allen, G., Bousquet, P., Brownlow, R., Cain, M., France, J. L., Hermansen, O., Hossaini, R., Jones, A. E., Levin, I., Manning, A. C., Myhre, G., Pyle, J. A., Vaughn, B. H., Warwick, N. J., White, J. W. C.

“…Atmospheric methane grew very rapidly in 2014 (12.7 ± 0.5 ppb/year), 2015 (10.1 ± 0.7 ppb/year), 2016 (7.0 ± 0.7 ppb/year), and 2017 (7.7 ± 0.7 ppb/year), at…”
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Methane Mitigation: Methods to Reduce Emissions, on the Path to the Paris Agreement by Nisbet, E. G., Fisher, R. E., Lowry, D., France, J. L., Allen, G., Bakkaloglu, S., Broderick, T. J., Cain, M., Coleman, M., Fernandez, J., Forster, G., Griffiths, P. T., Iverach, C. P., Kelly, B. F. J., Manning, M. R., Nisbet‐Jones, P. B. R., Pyle, J. A., Townsend‐Small, A., al‐Shalaan, A., Warwick, N., Zazzeri, G.

“…The atmospheric methane burden is increasing rapidly, contrary to pathways compatible with the goals of the 2015 United Nations Framework Convention on Climate…”
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Plume mapping and isotopic characterisation of anthropogenic methane sources by Zazzeri, G., Lowry, D., Fisher, R.E., France, J.L., Lanoisellé, M., Nisbet, E.G.

“…Methane stable isotope analysis, coupled with mole fraction measurement, has been used to link isotopic signature to methane emissions from landfill sites,…”
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Isotopic Ratios of Tropical Methane Emissions by Atmospheric Measurement by Brownlow, R., Lowry, D., Fisher, R. E., France, J. L., Lanoisellé, M., White, B., Wooster, M. J., Zhang, T., Nisbet, E. G.

“…Tropical methane sources are an important part of the global methane budget and include natural wetlands, rice agriculture, biomass burning, ruminants, fossil…”
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Blood pressure and cerebral oxygenation responses to skeletal muscle tension: a comparison of two physical maneuvers to prevent vasovagal reactions by France, C. R., France, J. L., Patterson, S. M.

“…Summary Aim:  The present study compared blood pressure, heart rate, and cerebral oxygenation responses to two manipulations used to prevent vasovagal reaction…”
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Snow optical properties at Dome C (Concordia), Antarctica; implications for snow emissions and snow chemistry of reactive nitrogen by France, J. L., King, M. D., Frey, M. M., Erbland, J., Picard, G., Preunkert, S., MacArthur, A., Savarino, J.

“…Measurements of e-folding depth, nadir reflectivity and stratigraphy of the snowpack around Concordia station (Dome C, 75.10° S, 123.31° E) were undertaken to…”
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Decreased albedo, e-folding depth and photolytic OH radical and NO2 production with increasing black carbon content in Arctic snow by Reay, H. J., France, J. L., King, M. D.

“…The contribution of snow photochemistry to snow and atmospheric oxidative capacity is controlled, in part, by snow albedo and e‐folding depths in snow. Albedo…”
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Measurements of OH and RO2 radicals at Dome C, East Antarctica by Kukui, Alexandre, Legrand, Michel, Preunkert, S., Frey, M. M., Loisil, R., Gil Roca, Jaime, Jourdain, Benjamin, King, M. D., France, J. L., Ancellet, Gérard

“…Concentrations of OH radicals and the sum of peroxy radicals, RO2, were measured in the boundary layer for the first time on the East Antarctic Plateau at the…”
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Methane and carbon dioxide fluxes and their regional scalability for the European Arctic wetlands during the MAMM project in summer 2012 by O'Shea, S. J., Allen, G., Gallagher, M. W., Bower, K., Illingworth, S. M., Muller, J. B. A., Jones, B. T., Percival, C. J., Bauguitte, S. J-B., Cain, M., Warwick, N., Quiquet, A., Skiba, U., Drewer, J., Dinsmore, K., Nisbet, E. G., Lowry, D., Fisher, R. E., France, J. L., Aurela, M., Lohila, A., Hayman, G., George, C., Clark, D. B., Manning, A. J., Friend, A. D., Pyle, J.

“…Airborne and ground-based measurements of methane (CH4), carbon dioxide (CO2) and boundary layer thermodynamics were recorded over the Fennoscandian landscape…”
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Methane mole fraction and δ13C above and below the trade wind inversion at Ascension Island in air sampled by aerial robotics by Brownlow, R., Lowry, D., Thomas, R. M., Fisher, R. E., France, J. L., Cain, M., Richardson, T. S., Greatwood, C., Freer, J., Pyle, J. A., MacKenzie, A. R., Nisbet, E. G.

“…Ascension Island is a remote South Atlantic equatorial site, ideal for monitoring tropical background CH4. In September 2014 and July 2015, octocopters were…”
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Marked long-term decline in ambient CO mixing ratio in SE England, 1997–2014: evidence of policy success in improving air quality by Lowry, D., Lanoisellé, M. E., Fisher, R. E., Martin, M., Fowler, C. M. R., France, J. L., Hernández-Paniagua, I. Y., Novelli, P. C., Sriskantharajah, S., O’Brien, P., Rata, N. D., Holmes, C. W., Fleming, Z. L., Clemitshaw, K. C., Zazzeri, G., Pommier, M., McLinden, C. A., Nisbet, E. G.

“…Atmospheric CO at Egham in SE England has shown a marked and progressive decline since 1997, following adoption of strict controls on emissions. The Egham site…”
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