Arctic Coupled biological and photochemical degradation of dissolved organic carbon
Overview: The thawing of organic carbon stored in arctic permafrost soils, and its oxidation to carbon dioxide (CO2; a greenhouse gas), is predicted to be a major, positive feedback on global warming. However, current estimates of the magnitude of this feedback do not include the oxidation of permafrost soil organic carbon flushed to sunlit lakes and rivers.
| Abstract | |
|---|---|
| Rose Cory, Jennifer C Bowen, Collin P Ward, George Kling, 2020 Photo-oxidation and photomineralization apparent quantum yield dataset for dissolved organic carbon leached from permafrost soils collected from the North Slope of Alaska, July 2018.. 10.6073/pasta/201f8d4009eec890d937b177da9eb919 |
Dissolved organic carbon (DOC) was leached from permafrost soils near the Toolik Field Station in the Alaskan Arctic and then characterized for its photochemical properties. Oxygen (O2) consumed from photo-oxidation of permafrost DOC was measured as a function of sunlight wavelength, defined as the apparent quantum yield spectrum of photo-oxidation (O2 consumed per mol photon absorbed by DOC). Carbon dioxide (CO2) produced from photomineralization of permafrost DOC was measured as a function of sunlight wavelength, defined as the apparent quantum yield spectrum of photomineralization (CO2 |
| Rose Cory, Jennifer C Bowen, Collin P Ward, George Kling, 2020 Radiocarbon and stable carbon isotope dataset for DOC leached from permafrost soils collected from the North Slope of Alaska in the summer of 2018. 10.6073/pasta/7a725525fcc5da13615e04e7da2a947c |
Dissolved organic carbon (DOC) was leached from p |
| Rose Cory, Jennifer C Bowen, Collin P Ward, George Kling, 2020 Photodegradation of carboxyl DOC from permafrost soils collected from the North Slope of Alaska in the summer of 2015. 10.6073/pasta/695af896f3079ec15345ac803e442798 |
Dissolved organic carbon (DOC) was leached from permafrost soils near the Toolik Field Station in the Alaskan Arctic and then characterized for its photochemical properties. The photodegradation of carboxyl carbon (C) within permafrost DOC was quantified by 13C nuclear magnetic resonance (NMR). |
| Rose Cory, Jennifer C Bowen, Collin P Ward, George Kling, 2020 Water chemistry of leachates prepared from permafrost soils collected from the North Slope of Alaska in the summers of 2015 and 2018. 10.6073/pasta/1799c4308272c99d54ef6cf84d5b4232 |
Soils were collected from the frozen permafrost layer (greater than 60 cm below the surface) at six sites underlying tussock or wet sedge vegetation, and on three glacial surfaces on the North Slope of Alaska during the summers of 2015 and 2018. Dissolved organic carbon (DOC) was leached from each permafrost soil and the water chemistry was analyzed. |
| Rose Cory, Jennifer C Bowen, Collin P Ward, George Kling, 2020 Radiocarbon and stable carbon isotopes of CO2 produced from photomineralization of DOC leached from permafrost soils collected from the North Slope of Alaska in the summer of 2018. 10.6073/pasta/ecf54f89183f7bbbb7bd5d931e7323f5 |
Dissolved organic carbon (DOC) was leached from permafrost soils near the Toolik Field Station in the Alaskan Arctic and then characterized for its photochemical properties. The radiocarbon (14C) and stable carbon (13C) isotopic compositions of carbon dioxide (CO2) photochemically produced from permafrost DOC were quantified. |
| Rose Cory, Jennifer C Bowen, Collin P Ward, George Kling, 2020 Preparation of DOC leachates from permafrost soils collected from the North Slope of Alaska in the summer of 2018. 10.6073/pasta/f35194d541f3b55fdd1778e2af52c676 |
Dissolved organic carbon (DOC) was leached from permafrost soils collected from the frozen permafrost layer at five sites underlying moist acidic tussock or wet sedge vegetation, and on three glacial surfaces on the North Slope of Alaska during summer 2018. |
| Rose Cory, Jennifer C Bowen, Collin P Ward, George Kling, 2020 Photomineralization apparent quantum yield at 309 nm for DOC leached from permafrost soils collected from the North Slope of Alaska in the summer of 2015. 10.6073/pasta/489bef4d2aa61e03bb77981605511b1d |
Dissolved organic carbon (DOC) was leached from permafrost soils near the Toolik Field Station in the Alaskan Arctic and then characterized for its photochemical properties. The apparent quantum yield of photomineralization (photochemical carbon dioxide, CO2, production) of permafrost DOC was quantified at 309 nm. |
| Abstract | |
|---|---|
| , Arctic Coupled biological and photochemical degradation of dissolved organic carbon . |
