Developing Model Constraints on Northern Extra-Tropical Carbon Cycling Based on measurements of the Abundance and Isotopic Composition of Atmospheric CO2

Keeling, Ralph

doi:10.2172/1165340

Title: Developing Model Constraints on Northern Extra-Tropical Carbon Cycling Based on measurements of the Abundance and Isotopic Composition of Atmospheric CO₂

Full Record
Other Related Research

You are accessing a document from the Department of Energy's (DOE) OSTI.GOV. This site is a product of DOE's Office of Scientific and Technical Information (OSTI) and is provided as a public service.

Visit OSTI to utilize additional information resources in energy science and technology.

Abstract

The objective of this project was to perform CO₂ data syntheses and modeling activities to address two central questions: 1) how much has the seasonal cycle in atmospheric CO₂ at northern high latitudes changed since the 1960s, and 2) how well do prognostic biospheric models represent these changes. This project also supported the continuation of the Scripps time series of CO₂ isotopes and concentration at ten baseline stations distributed globally.

Authors:

Keeling, Ralph ^[1]

Univ. of California, San Diego, CA (United States)

Publication Date:: Fri Dec 12 00:00:00 EST 2014

Research Org.:: Univ. of California, San Diego, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1165340

Report Number(s):: DE-SC0005090 416419/27972A
416419/27972A

DOE Contract Number:: SC0005099

Resource Type:: Technical Report

Country of Publication:: United States

Language:: English

Subject:: 54 ENVIRONMENTAL SCIENCES

Citation Formats


                    Keeling, Ralph. Developing Model Constraints on Northern Extra-Tropical Carbon Cycling Based on measurements of the Abundance and Isotopic Composition of Atmospheric CO2.  United States: N. p., 2014. 
        Web.  doi:10.2172/1165340.

Copy to clipboard


                    Keeling, Ralph. Developing Model Constraints on Northern Extra-Tropical Carbon Cycling Based on measurements of the Abundance and Isotopic Composition of Atmospheric CO2.  United States.  https://doi.org/10.2172/1165340

Copy to clipboard


                    Keeling, Ralph. 2014.  
        "Developing Model Constraints on Northern Extra-Tropical Carbon Cycling Based on measurements of the Abundance and Isotopic Composition of Atmospheric CO2".  United States.  https://doi.org/10.2172/1165340.  https://www.osti.gov/servlets/purl/1165340.

Copy to clipboard


                    
@article{osti_1165340,

  title        = {Developing Model Constraints on Northern Extra-Tropical Carbon Cycling Based on measurements of the Abundance and Isotopic Composition of Atmospheric CO2},

  author       = {Keeling, Ralph},

  abstractNote = {The objective of this project was to perform CO2 data syntheses and modeling activities to address two central questions: 1) how much has the seasonal cycle in atmospheric CO2 at northern high latitudes changed since the 1960s, and 2) how well do prognostic biospheric models represent these changes. This project also supported the continuation of the Scripps time series of CO2 isotopes and concentration at ten baseline stations distributed globally.},

  doi          = {10.2172/1165340},

  url          = {https://www.osti.gov/biblio/1165340},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Fri Dec 12 00:00:00 EST 2014},

  month        = {Fri Dec 12 00:00:00 EST 2014}

}

Copy to clipboard

Technical Report:

View Technical Report (0.14 MB)

https://doi.org/10.2172/1165340

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Measurements and modeling of CO₂ concentration and isotopes to improve process-level understanding of Arctic and boreal carbon cycling. Final Report

Technical Report Keeling, Ralph

The major goal of this project was to improve understanding of processes that control the exchanges of CO₂ between the atmosphere and the land biosphere on decadal and longer time scales. The approach involves measuring the changes in atmospheric CO₂ concentration and the isotopes of CO₂ (¹³C/¹²C and ¹⁸O/¹⁶O) at background stations and uses these and other datasets to challenge and improve numerical models of the earth system. The project particularly emphasized the use of these data to improve understanding of changes occurring in boreal and arctic ecosystems over the past 50 years and to seek from these data improvedmore »« less
https://doi.org/10.2172/1395576

Full Text Available
Increased light-use efficiency in northern terrestrial ecosystems indicated by CO₂ and greening observations

Journal Article Ricciuto, Daniel; Mao, Jiafu; Shi, Xiaoying - Geophysical Research Letters

Observations show an increasing amplitude in the seasonal cycle of CO₂ (ASC) north of 45°N of 56 ± 9.8% over the last 50 years and an increase in vegetation greenness of 7.5 - 15% in high northern latitudes since the 1980s. However, the causes of these changes remain uncertain. Historical simulations from terrestrial biosphere models in the Multiscale Synthesis and Terrestrial Model Intercomparison Project are compared to the ASC and greenness observations, using the TM3 atmospheric transport model to translate surface fluxes into CO₂ concentrations. We find that the modeled change in ASC is too small but the mean greeningmore »« less
Cited by 8
https://doi.org/10.1002/2016GL070710

Full Text Available
Responses in the growth of the northern forest biomes to a CO{sub 2}-induced climatic change, as evaluated by the Frankfurt Biosphere Model (FBM)

Conference Hager, C; Wurth, G; Wagner, U; ...

The Frankfurt Biosphere Model (FBM), a mechanistic, seasonal and prognostic compartment model of the terrestrial biosphere, has been developed in recent years to simulate the carbon exchange fluxes between the vegetation and the atmosphere with a spatial resolution of 0.5{degree} x 0.5{degree} on a global scale. In this contribution the authors use the FBM to assess the possible changes in the transient response of the northern forest biomes under a future 2 {times} CO{sub 2} climate. The development of these ecosystems from its initial seedling state to its climax state is simulated under different climatic conditions. In their simulations themore »« less
Study of the Role of Terrestrial Processes in the Carbon Cycle Based on Measurements of the Abundance and Isotopic Composition of Atmospheric CO2

Technical Report Piper, Stephen; Keeling, Ralph

The main objective of this project was to continue research to develop carbon cycle relationships related to the land biosphere based on remote measurements of atmospheric CO2 concentration and its isotopic ratios 13C/12C, 18O/16O, and 14C/12C. The project continued time-series observations of atmospheric carbon dioxide and isotopic composition begun by Charles D. Keeling at remote sites, including Mauna Loa, the South Pole, and eight other sites. Using models of varying complexity, the concentration and isotopic measurements were used to study long-term change in the interhemispheric gradients in CO2 and 13C/12C to assess the magnitude and evolution of the northern terrestrialmore »« less
https://doi.org/10.2172/1032487

Full Text Available
Increasing summer net CO<sub>2</sub> uptake in high northern ecosystems inferred from atmospheric inversions and comparisons to remote-sensing NDVI

Journal Article Welp, Lisa; Patra, Prabir; Rödenbeck, Christian; ... - Atmospheric Chemistry and Physics (Online)

Warmer temperatures and elevated atmospheric CO₂ concentrations over the last several decades have been credited with increasing vegetation activity and photosynthetic uptake of CO₂ from the atmosphere in the high northern latitude ecosystems: the boreal forest and arctic tundra. At the same time, soils in the region have been warming, permafrost is melting, fire frequency and severity are increasing, and some regions of the boreal forest are showing signs of stress due to drought or insect disturbance. The recent trends in net carbon balance of these ecosystems, across heterogeneous disturbance patterns, and the future implications of these changes are unclear.more »« less
Cited by 4
https://doi.org/10.5194/acp-16-9047-2016

Similar Records

Title: Developing Model Constraints on Northern Extra-Tropical Carbon Cycling Based on measurements of the Abundance and Isotopic Composition of Atmospheric CO2

Abstract

Citation Formats

Title: Developing Model Constraints on Northern Extra-Tropical Carbon Cycling Based on measurements of the Abundance and Isotopic Composition of Atmospheric CO₂