Relationship between physical and biogeochemical parameters and the scenario dependence of the transient climate response to cumulative carbon emissions

Tachiiri, Kaoru

doi:10.1186/s40645-020-00392-6

Progress in Earth and Planetary Science

Table 3 Correlation between each parameter, and TCRE in the I-1% scenario and the relative TCRE change from the I-1% scenario

From: Relationship between physical and biogeochemical parameters and the scenario dependence of the transient climate response to cumulative carbon emissions

Parameter	I-1%	D-1%	I-0.25%	I-0.5%	I-2%	I-4%
Equilibrium climate sensitivity (ECS)	0.829 0.835***	0.865 0.891***	0.762 0.791***	0.775 0.785***	− 0.742 − 0.743***	− 0.776 − 0.773***
Vertical diffusivity	− 0.199 − 0.191***	− 0.144 − 0.135***	− 0.084 − 0.079	− 0.140 − 0.129**	0.176 0.172**	0.193 0.192***
Horizontal diffusivity	0.035 0.047	0.080 0.076	0.091 0.082	0.090 0.085	− 0.050 − 0.060	− 0.043 − 0.051
Gent–McWilliams thickness	0.066 0.072	0.000 0.007	− 0.009 − 0.008	− 0.005 − 0.008	− 0.018 − 0.025	− 0.004 − 0.006
Freshwater flux adjustment	− 0.024 − 0.019	0.020 0.031	0.010 0.016	0.004 0.007	0.023 0.023	0.022 0.019
Marine CO2 uptake	− 0.294 − 0.288***	0.018 0.038	− 0.110 − 0.097	− 0.091 − 0.092	0.152 0.160**	0.164 0.178***
Maximum photosynthetic rate	0.026 0.046	0.239 0.207***	0.113 0.089	0.109 0.094	− 0.127 − 0.135***	− 0.131 − 0.154***
Specific leaf area	− 0.205 − 0.186***	0.072 0.045	− 0.114 − 0.121*	− 0.138 − 0.139**	0.184 0.170**	0.173 0.153**
Minimum temperature for photosynthesis	− 0.032 − 0.036	− 0.026 − 0.018	− 0.097 − 0.092	− 0.083 − 0.081	0.084 0.086	0.057 0.066
Temperature dependency of plant respiration	0.233 0.235***	0.219 0.213***	0.347 0.349***	0.367 0.371***	− 0.393 − 0.399***	− 0.364 − 0.376***
Temperature dependency of soil respiration	− 0.032 − 0.031	− 0.047 − 0.025	− 0.008 0.002	− 0.028 0.030	− 0.066 − 0.049	− 0.040 − 0.018
CO2–carbon cycle feedback (β )	− 0.346 − 0.324***	− 0.040 − 0.047	− 0.239 − 0.261***	− 0.306 − 0.313***	0.386 0.379***	0.354 0.339***
Climate–carbon cycle feedback (γ )	0.053 0.014	0.001 0.029	− 0.026 0.033	0.064 0.050	0.039 0.002	0.031 0.026
TCRE of I-1%	–	0.810 0.835***	0.831 0.863***	0.869 0.885***	− 0.922 − 0.928***	− 0.943 − 0.949***

In each cell, the upper and lower lines show the weighted Pearson’s product-moment correlation and the weighted Spearman’s rank correlation, respectively (weights are considered in calculating the variance and co-variance for the independent and dependent variables). For the latter, *, **, and *** indicate statistical significance at the 10%, 5%, and 1% levels, respectively (the sum of the weights for all members, i.e., 222.17, is used as the sample size in the statistical significance test)

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