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Author: Kon-Kee Liu Publisher: Springer Science & Business Media ISBN: 3540927352 Category : Science Languages : en Pages : 757
Book Description
This book is a product of the joint JGOFS (Joint Global Ocean Flux Study)/LOICZ (Land–Ocean Interactions in the Coastal Zone) Continental Margins Task Team which was established to facilitate continental margins research in the two projects. It contains signi cant information on the physical, biogeochemical, and ecosystems of continental margins nationally and regionally and provides a very valuable synthesis of this information and the physical, biogeochemical and ecosystem processes which occur on continental margins. The publication of this book is timely as it provides a very strong foundation for the development of the joint IMBER (Integrated Marine Biogeochemistry and Ecosystems Research)/LOICZ Science Plan and Implemen- tion Strategy for biogeochemical and ecosystems research in the continental margins and the impacts of global change on these systems. This initiative will move forward integrated biogeochemical and ecosystems research in the continental margins. We thank all the contributors to this volume and especially Kon-Kee Liu who has dedicated a great deal of time to ensuring a high-quality book is published. IMBER Scienti c Steering Committee Julie Hall LOICZ Scienti c Steering Committee Jozef Pacyna v 1 Preface In general, interfaces between the Earth’s larger material reservoirs (i. e. , the land, atmosphere, ocean, and sediments) are important in the control of the biogeoche- cal dynamics and cycling of the major bio-essential elements, including carbon (C), nitrogen (N), phosphorus (P), sulfur (S), and silicon (Si), found in organic matter and the inorganic skeletons, shells, and tests of benthic and marine organisms.
Author: Kon-Kee Liu Publisher: Springer Science & Business Media ISBN: 3540927352 Category : Science Languages : en Pages : 757
Book Description
This book is a product of the joint JGOFS (Joint Global Ocean Flux Study)/LOICZ (Land–Ocean Interactions in the Coastal Zone) Continental Margins Task Team which was established to facilitate continental margins research in the two projects. It contains signi cant information on the physical, biogeochemical, and ecosystems of continental margins nationally and regionally and provides a very valuable synthesis of this information and the physical, biogeochemical and ecosystem processes which occur on continental margins. The publication of this book is timely as it provides a very strong foundation for the development of the joint IMBER (Integrated Marine Biogeochemistry and Ecosystems Research)/LOICZ Science Plan and Implemen- tion Strategy for biogeochemical and ecosystems research in the continental margins and the impacts of global change on these systems. This initiative will move forward integrated biogeochemical and ecosystems research in the continental margins. We thank all the contributors to this volume and especially Kon-Kee Liu who has dedicated a great deal of time to ensuring a high-quality book is published. IMBER Scienti c Steering Committee Julie Hall LOICZ Scienti c Steering Committee Jozef Pacyna v 1 Preface In general, interfaces between the Earth’s larger material reservoirs (i. e. , the land, atmosphere, ocean, and sediments) are important in the control of the biogeoche- cal dynamics and cycling of the major bio-essential elements, including carbon (C), nitrogen (N), phosphorus (P), sulfur (S), and silicon (Si), found in organic matter and the inorganic skeletons, shells, and tests of benthic and marine organisms.
Book Description
ISBA-A-gs est une option du modèle de surface continentale du CNRM, ISBA, qui simule les échanges de carbone entre la biosphère terrestre et l'atmosphère. Au cours de cette thèse, le modèle est utilisé pour la première fois à l'échelle globale en mode forcé. Plusieurs simulations globales sont réalisées pour évaluer la sensibilité des flux turbulents et du LAI à un doublement de CO2 et au changement climatique prévu pour la fin du XXIe siècle.Une nouvelle option du modèle, nommée ISBA-CC, est aussi développée afin de simuler de manière plus réaliste la respiration de l'écosystème, en distinguant la respiration autotrophe et la respiration hétérotrophe.La validation de la dynamique de la végétation et des flux de carbone échangés, à la fois à l'échelle globale à l'aide de données satellitaires, et à l'échelle locale sur 26 sites de mesure du réseau FLUXNET, montre que le modèle de surface est suffisamment réaliste pour être couplé à un modèle de circulation générale, afin de simuler les interactions entre la surface continentale, l'atmosphère et le cycle du carbone.
Author: Martin Heimann Publisher: Springer ISBN: Category : Science Languages : en Pages : 620
Book Description
Of workshop on interannual variations in the carbon cycle / T. Volk and R. Keeling -- Summary of workshop on dissolved organic carbon in the ocean / J. R. Toggweiler and J. Orr -- Summary of workshop on the relative roles of physics and chemistry in the marine carbon cycle / G. Evans and J. Parslow -- Summary of workshop on terrestrial carbon cycling / I. C. Prentice and W. Emanuel -- Summary of workshop on measurement and modelling of the terrestrial net carbon flux / P. G. Jarvis and R. F. Houghton.
Author: Philippe Amiotte Suchet Publisher: ISBN: Category : Carbon cycle (Biogeochemistry). Languages : fr Pages : 190
Book Description
L'ALTERATION CHIMIQUE DES ROCHES EST ESSENTIELLEMENT LE FAIT DE L'ATTAQUE DES MINERAUX PAR L'ACIDE CARBONIQUE ISSU DU CO#2 ATMOSPHERIQUE, VIA LA PHOTOSYNTHESE PUIS LA DEGRADATION DE LA MATIERE ORGANIQUE DANS LES SOLS. CE CO#2 DISSOUS, IMPLIQUE DANS LES REACTIONS D'ALTERATION, EST ENSUITE TRANSPORTE EN SOLUTION, PRINCIPALEMENT SOUS FORME D'IONS BICARBONATES, PAR LES FLEUVES VERS LES OCEANS. POUR ESTIMER LA QUANTITE DE CO#2 CONSOMME PAR EROSION CHIMIQUE DES ROCHES SUR LES CONTINENTS, DEUX MODELES SONT DEVELOPPES DANS CE TRAVAIL. LE PREMIER EST UN MODELE GEOCHIMIQUE DE DECOMPOSITION DES FLUX D'ELEMENTS MAJEURS EXPORTES EN SOLUTION PAR LES FLEUVES (MODELE MEGA, MAJOR ELEMENT GEOCHEMICAL APPROACH). LE SECOND (GEM-CO#2 GLOBAL EROSION MODEL) EST BASE SUR UN ENSEMBLE DE RELATIONS EMPIRIQUES ENTRE LE FLUX DE CO#2 CONSOMME ET LE DRAINAGE POUR LES PRINCIPAUX TYPES DE ROCHE AFFLEURANT A LA SURFACE DES CONTINENTS. CE MODELE PERMET DE SIMULER L'INTENSITE ET LA DISTRIBUTION SPATIALE DES FLUX DE CO#2 CONSOMMES SUR L'ENSEMBLE DES CONTINENTS. LE BILAN DE LA CONSOMMATION DE CO#2 A L'ECHELLE GLOBALE A ETE ETABLI EN UTILISANT CES DEUX APPROCHES. LES ESTIMATIONS VARIENT AINSI DE 19,6 10#1#2 MOLES/AN A 24,5 10#1#2 MOLES/AN. LE MODELE GEM-CO#2 MONTRE QUE 72% DE CETTE CONSOMMATION DE CO#2 SE FAIT DANS L'HEMISPHERE NORD, DURANT LES MOIS DE JUIN A SEPTEMBRE ET DECEMBRE A MARS. LES BILANS DES FLUX MOYENS MENSUELS ET ANNUELS DE CO#2 CONSOMMES PAR L'ALTERATION DE CHAQUE CONTINENT ET EXPORTES VERS CHAQUE OCEAN SONT ETABLIS A L'AIDE DE GEM-CO#2. LES VARIATIONS SAISONNIERES ET INTERANNUELLES DE LA CONSOMMATION DE CO#2 SONT ETUDIEES SUR LES BASSINS DE LA GARONNE, DE L'OUBANGUI ET DU CONGO. ENFIN, ON ETUDIE L'INFLUENCE DES PRECIPITATIONS ACIDES SUR LA CONSOMMATION DE CO#2. LOCALEMENT, CELLES-CI PEUVENT PROVOQUER UNE DIMINUTION DE PLUS DE 50% DE LA CONSOMMATION DE CO#2. PAR CONTRE, A L'ECHELLE GLOBALE, CETTE DIMINUTION RESTE FAIBLE
Author: John R. Trabalka Publisher: Springer ISBN: Category : Nature Languages : en Pages : 632
Book Description
The United States Government, cognizant of its responsibilities to future generations, has been sponsoring research for nine years into the causes, effects, and potential impacts of increased concentrations of carbon dioxide (C0 ) in the atmosphere. Agencies such as the National Science Foun 2 dation, National Oceanic and Atmospheric Administration, and the U.S. Department of Energy (DOE) cooperatively spent about $100 million from FY 1978 through FY 1984 directly on the study of CO The DOE, as the 2 lead government agency for coordinating the government' s research ef forts, has been responsible for about 60% of these research efforts. William James succinctly defined our purpose when he stated science must be based upon " ... irreducible and stubborn facts." Scientific knowledge can and will reduce the present significant uncertainty sur rounding our understanding of the causes, effects, and potential impacts of increasing atmospheric CO2 We have come far during the past seven years in resolving some underlyinig doubts and in narrowing the ranges of disagreement. Basic concepts have become less murky. Yet, much more must be accomplished; more irreducible and stubborn facts are needed to reduce the uncertainties so that we can improve our knowledge base. Uncertainty can never be reduced to zero. However, with a much improved knowledge base, we will be able to learn, under stand, and be in a position to make decisions."
Author: P. Verity Publisher: Palala Press ISBN: 9781378102237 Category : Languages : en Pages : 54
Book Description
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Author: Kon-Kee Liu
Author: Kon-Kee Liu
Author: Henrik Ståhl
Author: 
Author: Institut océanographique
Author: Anne-Laure Gibelin
Author: Martin Heimann
Author: Philippe Amiotte Suchet
Author: T. M. L. Wigley
Author: John R. Trabalka
Author: P. Verity