Grant: Canada Research Chairs
Université d'Ottawa
$50,000.00
Accelerator Mass Spectrometry and Marine Biogeochemistry
FY 2023-24
Summary
Marine dissolved and particulate organic matter (DOM, POM) are two of the ocean¿s most influential carbon and nitrogen reservoirs. Both play an important role in regulating Earth¿s climate. Previous work suggests size and composition are important in determining DOM and POM biological availability and cycling. Dr. Walker will use advanced size-fractionation, isotopic measurements and molecular-level approaches to better characterize DOM and POM. He will utilize new applied accelerator mass spectrometry (AMS) techniques to advance our understanding of chemical oceanography and reveal new processes controlling DOM and POM biogeochemical cycling, and their deep ocean storage, on modern to millennial timescales.
Program
Canada Research Chairs
Recipient
Location
Ontario, Canada
Recipient Type
Academia
Type
Grant
Source
NSERC's Awards Data
As published
Application id
CRC-2018-00050
Name nom
Walker, Brett
Department département
Earth and Environmental Science - University of Ottawa
Organization id
28
Institution établissement
Université d'Ottawa
Province en
Ontario
Province fr
Ontario
Country en
CANADA
Country fr
CANADA
Fiscal year exercice financier
2023
Competition year année de concours
2018
Award amount
50000
Program id
CRC
Program name en
Canada Research Chairs
Program name fr
Chaires de recherche du Canada
Group en
DISCOVERY RESEARCH
Group fr
RECHERCHE AXÉE SUR LA DÉCOUVERTE
Committee code
9998
Committee name en
Canada Research Chair Selection Committee
Committee name fr
Comité de sélection des Chaires de recherche du Canada
Area of application code
9999
Area of application group en
Not available
Area of application group fr
Non disponible
Area of application en
Not available
Area of application fr
Non disponible
Research subject code
10000
Research subject group en
The field of research available
Research subject group fr
The field of research available
Research subject en
Le domaine de recherche disponible
Research subject fr
Le domaine de recherche disponible
Field of research list codes
RDF10505
Field of research list names en
Oceanography
Field of research list names fr
Océanographie
Application title
Accelerator Mass Spectrometry and Marine Biogeochemistry
Keyword
accelerator mass spectrometry
marine biogeochemistry
oceanography
chemical oceanography
dissolved organic matter
particulate organic matter
carbon
nitrogen
climate
microbial carbon pump
radiocarbon dating
14C
13C
15N
size-fractionation
stable isotope
compound-specific
nuclear magnetic resonance
biomarker
mass spectrometry
size-exclusion
flow-field fractionation
Application summary
Marine dissolved and particulate organic matter (DOM, POM) are two of the ocean¿s most influential carbon and nitrogen reservoirs. Both play an important role in regulating Earth¿s climate. Previous work suggests size and composition are important in determining DOM and POM biological availability and cycling. Dr. Walker will use advanced size-fractionation, isotopic measurements and molecular-level approaches to better characterize DOM and POM. He will utilize new applied accelerator mass spectrometry (AMS) techniques to advance our understanding of chemical oceanography and reveal new processes controlling DOM and POM biogeochemical cycling, and their deep ocean storage, on modern to millennial timescales.
