IRACCS

Investigating Increases in Global Terrestrial Carbon Uptake During the Last Three Decades

 Coordinatore UNIVERSITY OF LEEDS 

 Organization address address: WOODHOUSE LANE
city: LEEDS
postcode: LS2 9JT

contact info
Titolo: Mr.
Nome: Martin
Cognome: Hamilton
Email: send email
Telefono: +44 1133434090
Fax: +44 1133434090

 Nazionalità Coordinatore United Kingdom [UK]
 Totale costo 100˙000 €
 EC contributo 100˙000 €
 Programma FP7-PEOPLE
Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
 Code Call FP7-PEOPLE-2013-CIG
 Funding Scheme MC-CIG
 Anno di inizio 2014
 Periodo (anno-mese-giorno) 2014-03-01   -   2018-02-28

 Partecipanti

# participant  country  role  EC contrib. [€] 
1    UNIVERSITY OF LEEDS

 Organization address address: WOODHOUSE LANE
city: LEEDS
postcode: LS2 9JT

contact info
Titolo: Mr.
Nome: Martin
Cognome: Hamilton
Email: send email
Telefono: +44 1133434090
Fax: +44 1133434090

UK (LEEDS) coordinator 100˙000.00

Mappa

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 Word cloud

Esplora la "nuvola delle parole (Word Cloud) per avere un'idea di massima del progetto.

sink    rate    nitrogen    diffuse    co    atmospheric    rates    carbon    east    emissions    fossil    radiation    terrestrial    fraction    deposition    climate    aerosol    fuel    decades    sulfate    direct    asian    plant   

 Obiettivo del progetto (Objective)

'Since anthropogenic CO2 is the most important long-lived greenhouse gas causing climate change, improved understanding on how it cycles between the active land, ocean, and atmospheric reservoirs is a main concern for humanity. During the past decade, annual fossil fuel CO2 emissions have sharply increased at a rate of 3%/yr, almost doubling the rate of the prior three decades. To a big surprise, the corresponding increases in atmospheric carbon dioxide concentrations were relatively modest during this time frame. This coincidence has led to the hypothesis that the sharp rise in fossil fuel emissions and increase in sink strength especially since early 2000 may be a result of carbon sink processes that are controlled by the increasing emissions themselves, namely increased nitrogen deposition and a larger fraction of diffuse versus direct solar radiation from increased sulfate aerosol emissions. The objective of the proposed work is to estimate changes in global terrestrial carbon uptake over the last decades and attribute their cause(s) through a combination of observation-based and modelling approaches. We will investigate three main hypotheses in regards to increased terrestrial carbon uptake during recent decades, including (i) a progressive relaxation of climatic constraints on plant productivity including warming in northern temperate, boreal and tundra ecosystems and increases in rainfall rates over tropical savannas, (ii) increases in the fraction of diffuse/direct radiation associated predominantly with East Asian sulfate aerosol emissions that spurred plant photosynthetic rates, and (iii) increases in nitrogen deposition from East Asian fossil fuel burning that increased carbon plant uptake. This research is designed to improve our knowledge about carbon cycle feedbacks under climate change, a first-order uncertainty in climate models, leading to more credible projections of future climate.'

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