Sensitivity of the inorganic ocean carbon cycle to future climate warming in the UVic coupled model

Ewen, Tracy; Weaver, Andrew J.; Eby, Michael

doi:10.3137/ao.420103

Cited by 36 publications

(31 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…19 vertical ocean levels are used, with thicknesses increasing parabolically from 50 m at the surface to 518 m at depth. The ocean carbon cycle is simulated using an inorganic carbon cycle model (Ewen et al, 2004) and a nutrient-phytoplankton-zooplankton-detritus (NZPD) marine biology model (Schmittner et al, 2008). Nitrate remineralization and fixation, and denitrification are prognostically simulated.…”

Section: Model and Methodsmentioning

confidence: 99%

Drake Passage and Central American Seaway controls on the distribution of the oceanic carbon reservoir

Fyke

d’Orgeville

Weaver

2015

Global and Planetary Change

Self Cite

View full text Add to dashboard Cite

Section: Model and Methodsmentioning

confidence: 99%

Drake Passage and Central American Seaway controls on the distribution of the oceanic carbon reservoir

Fyke

d’Orgeville

Weaver

2015

Global and Planetary Change

Self Cite

View full text Add to dashboard Cite

“…The coupled model has a resolution of 3.6°in longitude and 1.8°in latitude and conserves energy, water, and carbon to machine precision without the use of flux adjustment. The UVic ESCM also includes a fully coupled carbon cycle taking into account the terrestrial carbon fluxes and reservoirs (Meissner et al 2003;Matthews et al 2005) as well as the inorganic (Ewen et al 2004) and organic (Schmittner et al 2008) carbon cycle in the ocean. The UVic ESCM is computationally very efficient and has been developed to address scientific questions related to climate variability on time scales of hundreds of years to millennia.…”

Section: Model Descriptionmentioning

confidence: 99%

Large-scale stress factors affecting coral reefs: open ocean sea surface temperature and surface seawater aragonite saturation over the next 400 years

2012

View full text Add to dashboard Cite

One-third of the world's coral reefs have disappeared over the last 30 years, and a further third is under threat today from various stress factors. The main global stress factors on coral reefs have been identified as changes in sea surface temperature (SST) and changes in surface seawater aragonite saturation (X arag ). Here, we use a climate model of intermediate complexity, which includes an ocean general circulation model and a fully coupled carbon cycle, in conjunction with present-day observations of inter-annual SST variability to investigate three IPCC representative concentration pathways (RCP 3PD, RCP 4.5, and RCP 8.5), and their impact on the environmental stressors of coral reefs related to open ocean SST and open ocean X arag over the next 400 years. Our simulations show that for the RCP 4.5 and 8.5 scenarios, the threshold of 3.3 for zonal and annual mean X arag would be crossed in the first half of this century. By year 2030, 66-85% of the reef locations considered in this study would experience severe bleaching events at least once every 10 years. Regardless of the concentration pathway, virtually every reef considered in this study ([97%) would experience severe thermal stress by year 2050. In all our simulations, changes in surface seawater aragonite saturation lead changes in temperatures.

show abstract

“…The UVic ESCM also includes a fully coupled global carbon cycle, which consists of inorganic carbon chemistry and air-sea exchange of CO 2 (Ewen et al, 2004), and a nutrientphytoplankton-zooplankton-detritus (NPZD) module which calculates the contribution of the biological pump to ocean biogeochemistry (Schartau and Oshlies, 2003;Schmittner et al, 2008). Terrestrial carbon fluxes and reservoirs are described by Matthews et al (2005) and coupled to the global model by Meissner et al (2003).…”

Section: Climate Model Descriptionmentioning

confidence: 99%

The importance of terrestrial weathering changes in multimillennial recovery of the global carbon cycle: a two-dimensional perspective

2017

View full text Add to dashboard Cite

Abstract. In this paper, we describe the development and application of a new spatially explicit weathering scheme within the University of Victoria Earth System Climate Model (UVic ESCM). We integrated a dataset of modern-day lithology with a number of previously devised parameterizations for weathering dependency on temperature, primary productivity, and runoff. We tested the model with simulations of future carbon cycle perturbations, comparing a number of emission scenarios and model versions with each other and with zero-dimensional equivalents of each experiment. Overall, we found that our two-dimensional weathering model versions were more efficient in restoring the carbon cycle to its pre-industrial state following the pulse emissions than their zero-dimensional counterparts; however, in either case the effect of this weathering negative feedback on the global carbon cycle was small on timescales of less than 1000 years. According to model results, the largest contribution to future changes in weathering rates came from the expansion of tropical and mid-latitude vegetation in grid cells dominated by weathering-vulnerable rock types, whereas changes in temperature and river runoff had a more modest direct effect. Our results also confirmed that silicate weathering is the only mechanism that can lead to a full recovery of the carbon cycle to pre-industrial levels on multimillennial timescales.

show abstract

Sensitivity of the inorganic ocean carbon cycle to future climate warming in the UVic coupled model

Cited by 36 publications

References 47 publications

Drake Passage and Central American Seaway controls on the distribution of the oceanic carbon reservoir

Drake Passage and Central American Seaway controls on the distribution of the oceanic carbon reservoir

Large-scale stress factors affecting coral reefs: open ocean sea surface temperature and surface seawater aragonite saturation over the next 400 years

The importance of terrestrial weathering changes in multimillennial recovery of the global carbon cycle: a two-dimensional perspective

Contact Info

Product

Resources

About