Výsledky vyhledávání

The atmospheric CH4 increase since the Last Glacial Maximum

Autor: THOMPSON, A. M., CHAPPELLAZ, J. A., FUNG, I. Y., KUCSERA, T. L.

Publikováno v: Tellus B; Vol 45, No 3 (1993)

Two studies of the effect of changing CH4 fluxes on global tropospheric oxidant levels, O3, OH, H2O2, have been performed with a multi-box photochemical model. (1) A sensitivity study is made by scaling back CH4, CO and NO emissions relative to prese

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=coactionpubl::342ce9d1834b11ee01c79d476c37cefd
http://www.tellusb.net/index.php/tellusb/article/view/15727

Zobrazit plný text záznamu

Precision requirements for space-based X CO 2 data

Publikováno v: Miller, C. E; Crisp, D.; DeCola, P. L; Olsen, S. C; Randerson, J. T; Michalak, A. M; et al.(2007). Precision requirements for space-based X CO 2 data. Journal of Geophysical Research, 112(D10). doi: 10.1029/2006JD007659. UC Irvine: Department of Earth System Science, UCI. Retrieved from: http://www.escholarship.org/uc/item/8c26h4vp

Precision requirements are determined for space-based column-averaged CO2 dry air mole fraction data. These requirements result from an assessment of spatial and temporal gradients in the relationship between precision and surface CO2 flux uncertaint

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______325::d92baadd2fdfb8ed97f24edfdff13f51
http://www.escholarship.org/uc/item/8c26h4vp

Zobrazit plný text záznamu

Large-scale plant light-use efficiency inferred from the seasonal cycle of atmospheric CO2

Autor: Still, Christopher J, Randerson, J T, Fung, I Y

Publikováno v: Still, Christopher J; Randerson, J T; & Fung, I Y. (2004). Large-scale plant light-use efficiency inferred from the seasonal cycle of atmospheric CO2. Global Change Biology, 10(8), 1240-1252. UC Santa Barbara: Retrieved from: http://www.escholarship.org/uc/item/6rx3p8cm

We combined atmospheric CO2 measurements, satellite observations, and an atmospheric transport model in an inverse modeling framework to infer a key property of vegetation physiology, the light-use efficiency (LUE) of net primary production, for larg

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______325::5b1a16c46f84a63a6584f18a0412fcd6
http://www.escholarship.org/uc/item/6rx3p8cm

Zobrazit plný text záznamu

Transcom 3 inversion intercomparison: Model mean results for the estimation of seasonal carbon sources and sinks

Autor: Gurney, K. R., Law, R. M., Denning, A. S., Rayner, P. J., Pak, B. C., Baker, D., Philippe Bousquet, Bruhwiler, L., Chen, Y. -H, Ciais, P., Fung, I. Y., Heimann, M., John, J., Maki, T., Maksyutov, S., Peylin, P., Prather, M., Taguchi, S.

Publikováno v: Global Biogeochemical Cycles
Global Biogeochemical Cycles, 2004, 18, pp.GB1010
Gurney, Kevin Robert; Law, Rachel M; Denning, A. Scott; Rayner, Peter J; Pak, Bernard C; Baker, David; et al.(2004). Transcom 3 inversion intercomparison: Model mean results for the estimation of seasonal carbon sources and sinks. Global Biogeochemical Cycles, 18(1), n/a-n/a. doi: 10.1029/2003GB002111. UC Irvine: Department of Earth System Science, UCI. Retrieved from: http://www.escholarship.org/uc/item/8ww0p090
Scopus-Elsevier
Global Biogeochemical Cycles, American Geophysical Union, 2004, pp.GB1010
Global Biogeochemical Cycles, American Geophysical Union, 2004, 18 (1), pp.n/a-n/a. ⟨10.1029/2003GB002111⟩
Global Biogeochemical Cycles, American Geophysical Union, 2004, 18, pp.n/a-n/a. ⟨10.1029/2003gb002111⟩

International audience; The TransCom 3 experiment was begun to explore the estimation of carbon sources and sinks via the inversion of simulated tracer transport. We build upon previous TransCom work by presenting the seasonal inverse results which p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::09618c8b5cf935ae90730572af5f27b0
https://hal-bioemco.ccsd.cnrs.fr/bioemco-00175985/document

Zobrazit plný text záznamu

Seasonal and latitudinal variability of troposphere Δ14CO2: Post bomb contributions from fossil fuels, oceans, the stratosphere, and the terrestrial biosphere

Autor: Randerson, J. T, Enting, I. G, Schuur, E. A. G, Caldeira, K., Fung, I. Y

Publikováno v: Randerson, J. T; Enting, I. G; Schuur, E. A. G; Caldeira, K.; & Fung, I. Y. (2002). Seasonal and latitudinal variability of troposphere Δ14CO2: Post bomb contributions from fossil fuels, oceans, the stratosphere, and the terrestrial biosphere. Global Biogeochemical Cycles, 16(4), 59-1-59-19. doi: 10.1029/2002GB001876. UC Irvine: Department of Earth System Science, UCI. Retrieved from: http://www.escholarship.org/uc/item/90s5r0q4

During the mid-1960s, large seasonal amplitudes were observed in surface measurements of Δ14C in the Northern Hemisphere. These seasonal oscillations were initially caused by stratosphere-troposphere exchange, with the injection of bomb 14C into the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______325::29866685e52251c5ee681664e79f894d
http://www.escholarship.org/uc/item/90s5r0q4

Zobrazit plný text záznamu

A possible global covariance between terrestrial gross primary production and 13 C discrimination: Consequences for the atmospheric 13 C budget and its response to ENSO

Autor: Randerson, J. T, Collatz, G. J, Fessenden, J. E, Munoz, A. D, Still, C. J, Berry, J. A, Fung, I. Y, Suits, N., Denning, A. S

Publikováno v: Randerson, J. T; Collatz, G. J; Fessenden, J. E; Munoz, A. D; Still, C. J; Berry, J. A; et al.(2002). A possible global covariance between terrestrial gross primary production and 13 C discrimination: Consequences for the atmospheric 13 C budget and its response to ENSO. Global Biogeochemical Cycles, 16(4), 83-1-83-16. doi: 10.1029/2001GB001845. UC Irvine: Department of Earth System Science, UCI. Retrieved from: http://www.escholarship.org/uc/item/0n09h5r7

It is well known that terrestrial photosynthesis and 13C discrimination vary in response to a number of environmental and biological factors such as atmospheric humidity and genotypic differences in stomatal regulation. Small changes in the global ba

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______325::436379116b12cceecd942bfa136b18e1
http://www.escholarship.org/uc/item/0n09h5r7

Zobrazit plný text záznamu

Carbon isotope discrimination of arctic and boreal biomes inferred from remote atmospheric measurements and a biosphere-atmosphere model

Autor: Randerson, J. T, Still, C. J, Balle, J. J, Fung, I. Y, Doney, S. C, Tans, P. P, Conway, T. J, White, J. W. C, Vaughn, B., Suits, N., Denning, A. S

Publikováno v: Randerson, J. T; Still, C. J; Balle, J. J; Fung, I. Y; Doney, S. C; Tans, P. P; et al.(2002). Carbon isotope discrimination of arctic and boreal biomes inferred from remote atmospheric measurements and a biosphere-atmosphere model. Global Biogeochemical Cycles, 16(3), 1-1-1-15. doi: 10.1029/2001GB001435. UC Irvine: Department of Earth System Science, UCI. Retrieved from: http://www.escholarship.org/uc/item/7hj85437

Estimating discrimination against ^(13)C during photosynthesis at landscape, regional, and biome scales is difficult because of large-scale variability in plant stress, vegetation composition, and photosynthetic pathway. Here we present estimates of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::27e874d18131f92821057188f54b6b57
https://resolver.caltech.edu/CaltechAUTHORS:20141027-091212856

Zobrazit plný text záznamu

Iron cycling and nutrient-limitation patterns in surface waters of the world ocean

Autor: Moore, J. K., Scott Doney, Glover, D. M., Fung, I. Y.

Publikováno v: Moore, JK; Doney, SC; Glover, DM; & Fung, IY. (2002). Iron cycling and nutrient-limitation patterns in surface waters of the world ocean. Deep-Sea Research Part II: Topical Studies in Oceanography, 49(1-3), 463-507. doi: 10.1016/S0967-0645(01)00109-6. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/17x1c4nh
ResearcherID

A global marine ecosystem mixed-layer model is used to study iron cycling and nutrient-limitation patterns in surface waters of the world ocean. The ecosystem model has a small phytoplankton size class whose growth can be limited by N, P, Fe, and/or

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::c59ff0a0cdb4416612cab845c2323b75
http://www.escholarship.org/uc/item/17x1c4nh

Zobrazit plný text záznamu

On error estimation in atmospheric CO 2 inversions

Publikováno v: Engelen, Richard J; Denning, A S; Gurney, K R; Law, R M; Rayner, P J; Baker, D; et al.(2002). On error estimation in atmospheric CO 2 inversions. Journal of Geophysical Research, 107(D22). doi: 10.1029/2002JD002195. UC Irvine: Department of Earth System Science, UCI. Retrieved from: http://www.escholarship.org/uc/item/7617p1t8

This paper explores various sources of error in atmospheric CO2 synthesis inversions using global circulation models. The estimation of prior, observation, model transport, and representation errors is described, and the latter two error sources are

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______325::ea0a78134f5f2a6123d1283900431f0e
http://www.escholarship.org/uc/item/7617p1t8

Zobrazit plný text záznamu

Increases in early season ecosystem uptake explain recent changes in the seasonal cycle of atmospheric CO 2 at high northern latitudes

Autor: Randerson, J. T, Field, C. B, Fung, I. Y, Tans, P. P

Publikováno v: Randerson, J. T; Field, C. B; Fung, I. Y; & Tans, P. P. (1999). Increases in early season ecosystem uptake explain recent changes in the seasonal cycle of atmospheric CO 2 at high northern latitudes. Geophysical Research Letters, 26(17), 2765-2768. doi: 10.1029/1999GL900500. UC Irvine: Department of Earth System Science, UCI. Retrieved from: http://www.escholarship.org/uc/item/87h576xs

We report changes in the seasonal cycle of atmospheric CO2 at high northern latitudes from 1980 to 1997 based on NOAA/CMDL observation stations. Using a combination of biogeochemical and atmospheric modeling approaches, we show that increases in earl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______325::af198ab5e18302a0f5f216f18ae71cb7
http://www.escholarship.org/uc/item/87h576xs

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání