Microorganisms are key to storing carbon in soils, shows new study nature
). We used the PRODA approach to optimize the microbial model at the global scale. Data assimilation was first applied at each SOC profile to estimate parameter values that best fit the observations. The estimated parameter values after the site-level data assimilation were further generalized to the global scale by a neural network model.
We conducted Bayesian data assimilation for each of the 57,267 SOC profiles with the MCMC method to estimate the parameter values of the microbial model that best fit the model simulations with SOC observations. One empirical constraint applied to data assimilation is that simulated MIC at steady state should be no more than 10% of the SOC storage over the entire soil profile.
We set 20,000 iterations for the test run and 50,000 iterations for the formal run. Eventually, we controlled the acceptance ratio of the formal run between 10% and 50%. We set the burn-in coefficient as 50%, where the first half of the accepted parameter values in the formal run was discarded, and the second half was used to generate the posterior distributions of the parameters. We calculated the mean values of the posterior distributions of the parameters as the final point estimates.
). This assumption makes data assimilation computationally more feasible than that under non-steady states (see the non-steady-state data assimilation
Argentina Últimas Noticias, Argentina Titulares
Similar News:También puedes leer noticias similares a ésta que hemos recopilado de otras fuentes de noticias.
Nature, the master engineer: Mechanical devices nature 'invented' firstFrom basic levers to more advanced mechanical devices like pumps, nature beat us by a long mile when it comes to 'inventing' engineering feats.
Leer más »
Nature’s Alchemy: Cellular Waste Transformed Into Essential ChemicalsA recent study uncovers a biochemical recycling process in animals that uses cellular waste to create vital chemicals, revolutionizing our understanding of animal and human functioning. This discovery opens up new research avenues for exploring over 100,000 uninvestigated chemicals. A new perspec
Leer más »
Menstrual health without stigma - Nature MedicineMenstrual health without stigma From menarche to menopause, MenstrualHealth is intrinsically linked to general health and must find regular attention in clinical practice. MenstrualHygieneDay MHDay2023 WeAreCommitted
Leer más »
House probes Wildlife Service’s social justice agenda; Nature put downriver of agency’s prioritiesThe House Natural Resources Committee, which has launched an investigation into the Fish and Wildlife Service’s spending on its social justice agenda, said the agency charged with rescuing endangered species is focusing much of its time and money working instead on “social change.”
Leer más »
'Nature got me through leukaemia'A former shop manager explains why he quit his job to lead birdwatching tours after becoming critically ill.
Leer más »
Very short-lived halogens amplify ozone depletion trends in the tropical lower stratosphere - Nature Climate ChangeIn contrast to the overall recovery of stratospheric ozone, ozone depletion in the tropical lower stratosphere has been ongoing over recent years. Here the authors show that currently unregulated halogenated ozone-depleting very short-lived substances play a key role in this ongoing depletion.
Leer más »