Search Results - "Van der Werf, G. R"

A human-driven decline in global burned area by Andela, N., Morton, D. C., Giglio, L., Chen, Y., van der Werf, G. R., Kasibhatla, P. S., DeFries, R. S., Collatz, G. J., Hantson, S., Kloster, S., Bachelet, D., Forrest, M., Lasslop, G., Li, F., Mangeon, S., Melton, J. R., Yue, C., Randerson, J. T.

“…Fire is an essential Earth system process that alters ecosystem and atmospheric composition. Here we assessed long-term fire trends using multiple satellite…”
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New fire diurnal cycle characterizations to improve fire radiative energy assessments made from MODIS observations by Andela, N, Kaiser, J. W, van der Werf, G. R, Wooster, M. J

“…Accurate near real time fire emissions estimates are required for air quality forecasts. To date, most approaches are based on satellite-derived estimates of…”
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Daily and 3-hourly variability in global fire emissions and consequences for atmospheric model predictions of carbon monoxide by Mu, M., Randerson, J. T., van der Werf, G. R., Giglio, L., Kasibhatla, P., Morton, D., Collatz, G. J., DeFries, R. S., Hyer, E. J., Prins, E. M., Griffith, D. W. T., Wunch, D., Toon, G. C., Sherlock, V., Wennberg, P. O.

“…Attribution of the causes of atmospheric trace gas and aerosol variability often requires the use of high resolution time series of anthropogenic and natural…”
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Global burned area and biomass burning emissions from small fires by Randerson, J. T., Chen, Y., van der Werf, G. R., Rogers, B. M., Morton, D. C.

“…In several biomes, including croplands, wooded savannas, and tropical forests, many small fires occur each year that are well below the detection limit of the…”
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Agricultural intensification increases deforestation fire activity in Amazonia by MORTON, D. C., DEFRIES, R. S., RANDERSON, J. T., GIGLIO, L., SCHROEDER, W., VAN DER WERF, G. R.

“…Fire‐driven deforestation is the major source of carbon emissions from Amazonia. Recent expansion of mechanized agriculture in forested regions of Amazonia has…”
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Carbon emissions from land use and land-cover change by Houghton, R. A, House, J. I, Pongratz, J, van der Werf, G. R, DeFries, R. S, Hansen, M. C, Le Quéré, C, Ramankutty, N

“…The net flux of carbon from land use and land-cover change (LULCC) accounted for 12.5% of anthropogenic carbon emissions from 1990 to 2010. This net flux is…”
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Biomass burning emissions estimated with a global fire assimilation system based on observed fire radiative power by Kaiser, J. W, Heil, A, Andreae, M. O, Benedetti, A, Chubarova, N, Jones, L, Morcrette, J.-J, Razinger, M, Schultz, M. G, Suttie, M, van der Werf, G. R

“…The Global Fire Assimilation System (GFASv1.0) calculates biomass burning emissions by assimilating Fire Radiative Power (FRP) observations from the MODIS…”
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Annual South American forest loss estimates based on passive microwave remote sensing (1990–2010) by van Marle, M. J. E, van der Werf, G. R, de Jeu, R. A. M, Liu, Y. Y

“…Consistent forest loss estimates are important to understand the role of forest loss and deforestation in the global carbon cycle, for biodiversity studies,…”
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Importance of transboundary transport of biomass burning emissions to regional air quality in Southeast Asia during a high fire event by Aouizerats, B, van der Werf, G. R, Balasubramanian, R, Betha, R

“…Smoke from biomass and peat burning has a notable impact on ambient air quality and climate in the Southeast Asia (SEA) region. We modeled a large fire-induced…”
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What could have caused pre-industrial biomass burning emissions to exceed current rates? by van der Werf, G. R, Peters, W, van Leeuwen, T. T, Giglio, L

“…Recent studies based on trace gas mixing ratios in ice cores and charcoal data indicate that biomass burning emissions over the past millennium exceeded…”
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A full greenhouse gases budget of Africa: synthesis, uncertainties, and vulnerabilities by Valentini, R, Arneth, A, Bombelli, A, Castaldi, S, Cazzolla Gatti, R, Chevallier, F, Ciais, P, Grieco, E, Hartmann, J, Henry, M, Houghton, R. A, Jung, M, Kutsch, W. L, Malhi, Y, Mayorga, E, Merbold, L, Murray-Tortarolo, G, Papale, D, Peylin, P, Poulter, B, Raymond, P. A, Santini, M, Sitch, S, Vaglio Laurin, G, van der Werf, G. R, Williams, C. A, Scholes, R. J

“…This paper, developed under the framework of the RECCAP initiative, aims at providing improved estimates of the carbon and GHG (CO2, CH4 and N2O) balance of…”
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Comparing optimized CO emission estimates using MOPITT or NOAA surface network observations by Hooghiemstra, P. B., Krol, M. C., Bergamaschi, P., de Laat, A. T. J., van der Werf, G. R., Novelli, P. C., Deeter, M. N., Aben, I., Röckmann, T.

“…This paper compares two global inversions to estimate carbon monoxide (CO) emissions for 2004. Either surface flask observations from the National Oceanic and…”
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Relationships between burned area, forest cover loss, and land cover change in the Brazilian Amazon based on satellite data by Fanin, T, van der Werf, G. R

“…Fires are used as a tool in the deforestation process. Yet, the relationship between fire and deforestation may vary temporally and spatially depending on the…”
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Climate regulation of fire emissions and deforestation in equatorial Asia by van der Werf, G.R, Dempewolf, J, Trigg, S.N, Randerson, J.T, Kasibhatla, P.S, Giglio, L, Murdiyarso, D, Peters, W, Morton, D.C, Collatz, G.J, Dolman, A.J, DeFries, R.S

“…Drainage of peatlands and deforestation have led to large-scale fires in equatorial Asia, affecting regional air quality and global concentrations of…”
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Contribution of anthropogenic and natural sources to atmospheric methane variability by Bousquet, P, Miller, J. B, Dlugokencky, E. J, Peylin, P, Ramonet, M, Lathière, J, Ciais, P, Carouge, C, Hauglustaine, D. A, Langenfelds, R. L, Papa, F, Brunke, E.-G, White, J, Van der Werf, G. R, Prigent, C, Tyler, S. C, Schmidt, M, Steele, L. P

“…Methane is an important greenhouse gas, and its atmospheric concentration has nearly tripled since pre-industrial times. The growth rate of atmospheric methane…”
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European carbon balance. Part 2: croplands by CIAIS, P, WATTENBACH, M, VUICHARD, N, SMITH, P, PIAO, S.L, DON, A, LUYSSAERT, S, JANSSENS, I.A, BONDEAU, A, DECHOW, R, LEIP, A, SMITH, PC, BEER, C, VAN DER WERF, G.R, GERVOIS, S, VAN OOST, K, TOMELLERI, E, FREIBAUER, A, SCHULZE, E.D

“…We estimated the long-term carbon balance [net biome production (NBP)] of European (EU-25) croplands and its component fluxes, over the last two decades. Net…”
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Global cropland monthly gross primary production in the year 2000 by Chen, T, van der Werf, G. R, Gobron, N, Moors, E. J, Dolman, A. J

“…Croplands cover about 12% of the ice-free terrestrial land surface. Compared with natural ecosystems, croplands have distinct characteristics due to…”
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Global fire emissions and the contribution of deforestation, savanna, forest, agricultural, and peat fires (1997–2009) by van der Werf, G. R., Randerson, J. T., Giglio, L., Collatz, G. J., Mu, M., Kasibhatla, P. S., Morton, D. C., DeFries, R. S., Jin, Y., van Leeuwen, T. T.

“…New burned area datasets and top-down constraints from atmospheric concentration measurements of pyrogenic gases have decreased the large uncertainty in fire…”
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Biological and geophysical feedbacks with fire in the Earth system by Archibald, S, Lehmann, C E R, Belcher, C M, Bond, W J, Bradstock, R A, Daniau, A-L, Dexter, K G, Forrestel, E J, Greve, M, He, T, Higgins, S I, Hoffmann, W A, Lamont, B B, McGlinn, D J, Moncrieff, G R, Osborne, C P, Pausas, J G, Price, O, Ripley, B S, Rogers, B M, Schwilk, D W, Simon, M F, Turetsky, M R, Van der Werf, G R, Zanne, A E

“…Roughly 3% of the Earth's land surface burns annually, representing a critical exchange of energy and matter between the land and atmosphere via combustion…”
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Interannual variability of carbon monoxide emission estimates over South America from 2006 to 2010 by Hooghiemstra, P. B., Krol, M. C., van Leeuwen, T. T., van der Werf, G. R., Novelli, P. C., Deeter, M. N., Aben, I., Röckmann, T.

“…We present the first inverse modeling study to estimate CO emissions constrained by both surface and satellite observations. Our 4D‐Var system assimilates…”
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