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Title: Leveraging the signature of heterotrophic respiration on atmospheric CO2 for model benchmarking

Journal Article · · Biogeosciences (Online)

Spatial and temporal variations in atmospheric carbon dioxide (CO2) reflect large-scale net carbon exchange between the atmosphere and terrestrial ecosystems. Soil heterotrophic respiration (HR) is one of the component fluxes that drive this net exchange, but, given observational limitations, it is difficult to quantify this flux or to evaluate global-scale model simulations thereof. Here, we show that atmospheric CO2 can provide a useful constraint on large-scale patterns of soil heterotrophic respiration. We analyze three soil model configurations (CASA-CNP, MIMICS, and CORPSE) that simulate HR fluxes within a biogeochemical test bed that provides each model with identical net primary productivity (NPP) and climate forcings. We subsequently quantify the effects of variation in simulated terrestrial carbon fluxes (NPP and HR from the three soil test-bed models) on atmospheric CO2 distributions using a three-dimensional atmospheric tracer transport model. Our results show that atmospheric CO2 observations can be used to identify deficiencies in model simulations of the seasonal cycle and interannual variability in HR relative to NPP. In particular, the two models that explicitly simulated microbial processes (MIMICS and CORPSE) were more variable than observations at interannual timescales and showed a stronger-than-observed temperature sensitivity. Our results prompt future research directions to use atmospheric CO2, in combination with additional constraints on terrestrial productivity or soil carbon stocks, for evaluating HR fluxes.

Research Organization:
Univ. of Colorado, Boulder, CO (United States); Cornell Univ., Ithaca, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); National Aeronautics and Space Administration (NASA)
Grant/Contract Number:
SC0014374; SC0016364; NNX17AK19G
OSTI ID:
1604475
Alternate ID(s):
OSTI ID: 1802624; OSTI ID: 1863816; OSTI ID: 2228927
Journal Information:
Biogeosciences (Online), Journal Name: Biogeosciences (Online) Vol. 17 Journal Issue: 5; ISSN 1726-4189
Publisher:
Copernicus Publications, EGUCopyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

References (66)

Multiple models and experiments underscore large uncertainty in soil carbon dynamics journal October 2018
Improving the monitoring of crop productivity using spaceborne solar-induced fluorescence journal November 2015
Using ecosystem experiments to improve vegetation models journal May 2015
Temperature and soil organic matter decomposition rates - synthesis of current knowledge and a way forward journal August 2011
'Breathing' of the terrestrial biosphere: lessons learned from a global network of carbon dioxide flux measurement systems journal January 2008
Ecological Response to Permafrost Thaw and Consequences for Local and Global Ecosystem Services journal November 2018
Tropical nighttime warming as a dominant driver of variability in the terrestrial carbon sink journal December 2015
A global model of carbon, nitrogen and phosphorus cycles for the terrestrial biosphere journal January 2010
A comparison of trenched plot techniques for partitioning soil respiration journal October 2011
Contribution of ocean, fossil fuel, land biosphere, and biomass burning carbon fluxes to seasonal and interannual variability in atmospheric CO 2 : SEASONAL AND INTERANNUAL CO journal February 2008
Evolution of natural and anthropogenic fluxes of atmospheric CO 2 from 1957 to 2003 journal January 2011
2016 International Land Model Benchmarking (ILAMB) Workshop Report report April 2017
Comparing nocturnal eddy covariance measurements to estimates of ecosystem respiration made by scaling chamber measurements at six coniferous boreal sites journal December 1997
The International Land Model Benchmarking (ILAMB) System: Design, Theory, and Implementation journal November 2018
Remote sensing of solar-induced chlorophyll fluorescence: Review of methods and applications journal October 2009
Solar-induced chlorophyll fluorescence is strongly correlated with terrestrial photosynthesis for a wide variety of biomes: First global analysis based on OCO-2 and flux tower observations journal June 2018
A global database of soil respiration data journal January 2010
The contribution of terrestrial sources and sinks to trends in the seasonal cycle of atmospheric carbon dioxide journal December 1997
New global observations of the terrestrial carbon cycle from GOSAT: Patterns of plant fluorescence with gross primary productivity: CHLOROPHYLL FLUORESCENCE FROM SPACE journal September 2011
Trends in North American net primary productivity derived from satellite observations, 1982-1998: NORTH AMERICAN NET PRIMARY PRODUCTIVITY TRENDS journal May 2002
Comparison of different chamber techniques for measuring soil CO2 efflux journal June 2004
Contribution of semi-arid ecosystems to interannual variability of the global carbon cycle journal May 2014
Persistence of soil organic matter as an ecosystem property journal October 2011
Comparing ecosystem and soil respiration: Review and key challenges of tower-based and soil measurements journal February 2018
Hemispheric and large-scale land-surface air temperature variations: An extensive revision and an update to 2010: LAND-SURFACE TEMPERATURE VARIATIONS journal March 2012
Managing uncertainty in soil carbon feedbacks to climate change journal July 2016
The evolution and application of the reverse Michaelis-Menten equation journal October 2018
Globally rising soil heterotrophic respiration over recent decades journal August 2018
Systematic assessment of terrestrial biogeochemistry in coupled climate-carbon models journal October 2009
Interpreting, measuring, and modeling soil respiration journal March 2005
Changes in soil organic carbon storage predicted by Earth system models during the 21st century journal January 2014
Global Carbon Budget 2017 journal January 2018
The CENTURY model book January 1996
Soil organic matter turnover is governed by accessibility not recalcitrance journal March 2012
Global soil carbon projections are improved by modelling microbial processes journal July 2013
Beyond clay: towards an improved set of variables for predicting soil organic matter content journal February 2018
Interannual variation of terrestrial carbon cycle: Issues and perspectives journal November 2019
Representing life in the Earth system with soil microbial functional traits in the MIMICS model journal January 2015
The covariation of Northern Hemisphere summertime CO 2 with surface temperature in boreal regions journal January 2013
Global Retrievals of Solar‐Induced Chlorophyll Fluorescence With TROPOMI: First Results and Intersensor Comparison to OCO‐2 journal October 2018
Substrate limitations for heterotrophs: Implications for models that estimate the seasonal cycle of atmospheric CO 2 journal December 1996
The contentious nature of soil organic matter journal November 2015
Model prediction of biome-specific global soil respiration from 1960 to 2012: BIOME-SPECIFIC GLOBAL RESPIRATION journal July 2017
Sensitivity of tropical carbon to climate change constrained by carbon dioxide variability journal February 2013
Carbon–Concentration and Carbon–Climate Feedbacks in CMIP5 Earth System Models journal August 2013
Global Carbon Sinks and Their Variability Inferred from Atmospheric O2 and δ13C journal March 2000
Integrating microbial physiology and physio-chemical principles in soils with the MIcrobial-MIneral Carbon Stabilization (MIMICS) model journal January 2014
New constraints on Northern Hemisphere growing season net flux journal January 2007
The Michaelis-Menten kinetics of soil extracellular enzymes in response to temperature: a cross-latitudinal study journal January 2012
Minimizing artifacts and biases in chamber-based measurements of soil respiration journal December 2002
A global relationship between the heterotrophic and autotrophic components of soil respiration? journal October 2004
Microbe-driven turnover offsets mineral-mediated storage of soil carbon under elevated CO2 journal November 2014
The on-orbit performance of the Orbiting Carbon Observatory-2 (OCO-2) instrument and its radiometrically calibrated products journal January 2017
Interannual variability of the global carbon cycle (1992-2005) inferred by inversion of atmospheric CO 2 and δ 13 CO 2 measurements : VARIABILITY OF THE GLOBAL CARBON CYCLE journal July 2008
The effect of vertically resolved soil biogeochemistry and alternate soil C and N models on C dynamics of CLM4 journal January 2013
Microbial dynamics and soil physicochemical properties explain large‐scale variations in soil organic carbon journal February 2020
Terrestrial ecosystem production: A process model based on global satellite and surface data journal December 1993
A Functional Response Metric for the Temperature Sensitivity of Tropical Ecosystems journal April 2018
Sensitivity of atmospheric CO2 growth rate to observed changes in terrestrial water storage journal August 2018
The dominant role of semi-arid ecosystems in the trend and variability of the land CO2 sink journal May 2015
Atmospheric Carbon Dioxide Variability in the Community Earth System Model: Evaluation and Transient Dynamics during the Twentieth and Twenty-First Centuries journal July 2013
The Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA-2) journal July 2017
Evaluation of MODIS NPP and GPP products across multiple biomes journal June 2006
Applying population and community ecology theory to advance understanding of belowground biogeochemistry journal January 2017
Global Concentrations of CO2 and CH4 Retrieved from GOSAT: First Preliminary Results journal January 2009
Carbon cycle confidence and uncertainty: Exploring variation among soil biogeochemical models journal November 2017