Search Results - "Haszpra, L."

CO2 surface fluxes at grid point scale estimated from a global 21 year reanalysis of atmospheric measurements by Chevallier, F., Ciais, P., Conway, T. J., Aalto, T., Anderson, B. E., Bousquet, P., Brunke, E. G., Ciattaglia, L., Esaki, Y., Fröhlich, M., Gomez, A., Gomez-Pelaez, A. J., Haszpra, L., Krummel, P. B., Langenfelds, R. L., Leuenberger, M., Machida, T., Maignan, F., Matsueda, H., Morguí, J. A., Mukai, H., Nakazawa, T., Peylin, P., Ramonet, M., Rivier, L., Sawa, Y., Schmidt, M., Steele, L. P., Vay, S. A., Vermeulen, A. T., Wofsy, S., Worthy, D.

“…This paper documents a global Bayesian variational inversion of CO2 surface fluxes during the period 1988–2008. Weekly fluxes are estimated on a 3.75° × 2.5°…”
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Development of the Biome-BGC model for simulation of managed herbaceous ecosystems by Hidy, D., Barcza, Z., Haszpra, L., Churkina, G., Pintér, K., Nagy, Z.

“…► We present the development of the Biome-BGC model to improve its performance in herbaceous ecosystems. ► Phenology representation and soil hydrology were…”
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Top-down estimates of European CH4 and N2O emissions based on four different inverse models by Bergamaschi, P., Corazza, M., Karstens, U., Athanassiadou, M., Thompson, L., Pison, I., Manning, A., Bousquet, Philippe, Segers, A., Vermeulen, A., Janssens-Maenhout, G., Schmidt, M., Ramonet, M., Meinhardt, F., Aalto, T., Haszpra, L., Moncrieff, J., Popa, E., Lowry, D., Steinbacher, M., Jordan, A., O'Doherty, S., Piacentino, S., Dlugokencky, E.

“…European CH 4 and N 2 O emissions are estimated for 2006 and 2007 using four inverse modelling systems, based on different global and regional Eulerian and…”
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Seven years of recent European net terrestrial carbon dioxide exchange constrained by atmospheric observations by PETERS, W, KROL, M.C, van der WERF, G.R, HOUWELING, S, JONES, C.D, HUGHES, J, SCHAEFER, K, MASARIE, K.A, JACOBSON, A.R, MILLER, J.B, CHO, C.H, RAMONET, M, SCHMIDT, M, CIATTAGLIA, L, APADULA, F, HELTAI, D, MEINHARDT, F, DI SARRA, A.G, PIACENTINO, S, SFERLAZZO, D, AALTO, T, HATAKKA, J, STRÖM, J, HASZPRA, L, MEIJER, H.A.J, VAN DER LAAN, S, NEUBERT, R.E.M, JORDAN, A, RODÓ, X, MORGUÍ, J.-A, VERMEULEN, A.T, POPA, E, ROZANSKI, K, ZIMNOCH, M, MANNING, A.C, LEUENBERGER, M, UGLIETTI, C, DOLMAN, A.J, CIAIS, P, HEIMANN, M, TANS, P.P

“…We present an estimate of net ecosystem exchange (NEE) of CO₂ in Europe for the years 2001-2007. It is derived with a data assimilation that uses a large set…”
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Inverse modelling of European N2O emissions: assimilating observations from different networks by Corazza, M, Bergamaschi, P, Vermeulen, A T, Aalto, T, Haszpra, L, Meinhardt, F, O'Doherty, S, Thompson, R, Moncrieff, J, Popa, E, Steinbacher, M, Jordan, A, Dlugokencky, E, Brühl, C, Krol, M, Dentener, F

“…We describe the setup and first results of an inverse modelling system for atmospheric N2 O, based on a four-dimensional variational (4DVAR) technique and the…”
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Global CO2 fluxes inferred from surface air-sample measurements and from TCCON retrievals of the CO2 total column by CHEVALLIER, F, DEUTSCHER, N. M, HASZPRA, L, KRUMMEL, P, KYRÖ, E, LABUSCHAGNE, C, LANGENFELDS, R, MACHIDA, T, MAIGNAN, F, MATSUEDA, H, MORINO, I, NOTHOLT, J, CONWAY, T. J, RAMONET, M, SAWA, Y, SCHMIDT, M, SHERLOCK, V, STEELE, P, STRONG, K, SUSSMANN, R, WENNBERG, P, WOFSY, S, WORTHY, D, CIAIS, P, WUNCH, D, ZIMNOCH, M, CIATTAGLIA, L, DOHE, S, FRÖHLICH, M, GOMEZ-PELAEZ, A. J, GRIFFITH, D, HASE, F

“…We present the first estimate of the global distribution of CO2 surface fluxes from 14 stations of the Total Carbon Column Observing Network (TCCON). The…”
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Trends and temporal variations of major greenhouse gases at a rural site in Central Europe by Haszpra, L., Barcza, Z., Hidy, D., Szilágyi, I., Dlugokencky, E., Tans, P.

“…In this study the trends and temporal variations of four major greenhouse gases (CO 2, CH 4, N 2O, SF 6) measured at Hegyhátsál, Hungary, are analyzed. The…”
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TransCom N2O model inter-comparison – Part 2: Atmospheric inversion estimates of N2O emissions by Thompson, R., Ishijima, K., Saikawa, E., Corazza, M., Karstens, U., Patra, P., Bergamaschi, P., Chevallier, F., Dlugokencky, E., Prinn, R., Weiss, R., O'Doherty, S., Fraser, P., Steele, L., Krummel, P., Vermeulen, A., Tohjima, Y., Jordan, A., Haszpra, L., Steinbacher, M., van Der Laan, S., Aalto, T., Meinhardt, F., Popa, M., Moncrieff, J., Bousquet, Philippe

“…This study examines N 2 O emission estimates from five different atmospheric inversion frameworks based on chemistry transport models (CTMs). The five…”
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Regional inversion of CO2 ecosystem fluxes from atmospheric measurements: reliability of the uncertainty estimates by Broquet, G., Chevallier, F., Bréon, F.-M., Kadygrov, N., Alemanno, M., Apadula, F., Hammer, S., Haszpra, L., Meinhardt, F., Morguí, J., Necki, J., Piacentino, S., Ramonet, M., Schmidt, M., Thompson, R., Vermeulen, A., Yver, C., Ciais, Philippe

“…The Bayesian framework of CO2 flux inversions permits estimates of the retrieved flux uncertainties. Here, the reliability of these theoretical estimates is…”
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How well do tall-tower measurements characterize the CO2 mole fraction distribution in the planetary boundary layer? by Haszpra, L, Barcza, Z, Haszpra, T, Pátkai, Zs, Davis, K J

“…Planetary boundary layer (PBL) CO2 mole fraction data are needed by transport models and carbon budget models as both input and reference for validation. The…”
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Variation of CO2 mole fraction in the lower free troposphere, in the boundary layer and at the surface by Haszpra, L, Ramonet, M, Schmidt, M, Barcza, Z, Pátkai, Zs, Tarczay, K, Yver, C, Tarniewicz, J, Ciais, P

“…Eight years of occasional flask air sampling and 3 years of frequent in situ measurements of carbon dioxide (CO2 ) vertical profiles on board of a small…”
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Comparing atmospheric transport models for future regional inversions over Europe – Part 1: mapping the atmospheric CO2 signals by Geels, C., Gloor, M., Ciais, Philippe, Bousquet, Philippe, Peylin, P., Vermeulen, A. T., Dargaville, R., Aalto, T., Brandt, J., Christensen, J. H., Frohn, L. M., Haszpra, L., Karstens, U., Rödenbeck, C., Ramonet, M., Carboni, G., Santaguida, R.

“…The CO2 source and sink distribution across Europe can be estimated in principle through inverse methods by combining CO2 observations and atmospheric…”
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Variation of CO 2 mole fraction in the lower free troposphere, in the boundary layer and at the surface by Haszpra, L., Ramonet, M., Schmidt, M., Barcza, Z., Pátkai, Zs, Tarczay, K., Yver, C., Tarniewicz, J., Ciais, P.

“…Eight years of occasional flask air sampling and 3 years of frequent in situ measurements of carbon dioxide (CO2) vertical profiles on board of a small…”
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Spatial representativeness of tall tower eddy covariance measurements using remote sensing and footprint analysis by Barcza, Z., Kern, A., Haszpra, L., Kljun, N.

“…We present a method for the estimation of the spatial representativeness of tall tower eddy covariance measurements monitoring a heterogeneous landscape. The…”
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How well do tall-tower measurements characterize the CO 2 mole fraction distribution in the planetary boundary layer? by Haszpra, L., Barcza, Z., Haszpra, T., Pátkai, Zs, Davis, K. J.

“…Planetary boundary layer (PBL) CO2 mole fraction data are needed by transport models and carbon budget models as both input and reference for validation. The…”
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Long-term tall tower carbon dioxide flux monitoring over an area of mixed vegetation by Haszpra, L., Barcza, Z., Davis, K.J., Tarczay, K.

“…A methodology is described to determine the carbon budget of an extended region with mixed vegetation. The eddy covariance measuring system is operated at 82 m…”
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TransCom N 2 O model inter-comparison – Part 2: Atmospheric inversion estimates of N 2 O emissions by Thompson, R. L., Ishijima, K., Saikawa, E., Corazza, M., Karstens, U., Patra, P. K., Bergamaschi, P., Chevallier, F., Dlugokencky, E., Prinn, R. G., Weiss, R. F., O'Doherty, S., Fraser, P. J., Steele, L. P., Krummel, P. B., Vermeulen, A., Tohjima, Y., Jordan, A., Haszpra, L., Steinbacher, M., Van der Laan, S., Aalto, T., Meinhardt, F., Popa, M. E., Moncrieff, J., Bousquet, P.

“…This study examines N2O emission estimates from five different atmospheric inversion frameworks based on chemistry transport models (CTMs). The five frameworks…”
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Tracking changes in carbon monoxide budget over Europe between 1995 and 2000 by Mészáros, T., Haszpra, L., Gelencsér, A.

“…The variation in carbon monoxide (CO) mixing ratio is of primary interest since it affects the atmospheric abundance of several trace gases, like methane, via…”
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The assessment of the seasonal contribution of the anthropogenic sources to the carbon monoxide budget in Europe by Mészáros, T, Haszpra, L, Gelencsér, A

“…This study aims to obtain a simplified understanding of the European carbon monoxide (CO) budget, specifically focusing on the seasonal variability of sources…”
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Multi-decadal atmospheric carbon dioxide measurements in Hungary, central Europe by Haszpra, László

“…The paper reviews and evaluates a 30-year-long atmospheric CO2 data series measured at the Hegyhátsál tall-tower greenhouse gas monitoring site, a member of…”
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