COVID-19 Lockdown Unravels the Complex Interplay between Environmental Conditions and Human Activity

During the COVID-19 epidemic, draconian countermeasures forbidding nonessential human activities have been adopted in several countries worldwide, providing an unprecedented setup for testing and quantifying the current impact of humankind on climate and for driving potential sustainability policies...

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Main Authors: Sebastian Raimondo, Barbara Benigni, Manlio De Domenico
Format: Article
Language:English
Published: Wiley 2022-01-01
Series:Complexity
Online Access:http://dx.doi.org/10.1155/2022/5677568
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author Sebastian Raimondo
Barbara Benigni
Manlio De Domenico
author_facet Sebastian Raimondo
Barbara Benigni
Manlio De Domenico
author_sort Sebastian Raimondo
collection DOAJ
description During the COVID-19 epidemic, draconian countermeasures forbidding nonessential human activities have been adopted in several countries worldwide, providing an unprecedented setup for testing and quantifying the current impact of humankind on climate and for driving potential sustainability policies in the postpandemic era from a perspective of complex systems. In this study, we consider heterogeneous sources of environmental and human activity observables, considered as components of a complex socioenvironmental system, and apply information theory, network science, and Bayesian inference to analyze their structural relations and nonlinear dynamics between January 2019 and August 2020 in northern Italy, i.e., before, during, and after the national lockdown. The topological structure of a complex system strongly impacts its collective behavior; therefore, mapping this structure is essential to fully understand the functions of the system as a whole and its fragility to unexpected disruptions or shocks. To this aim, we unravel the causal relationships between the 16 environmental conditions and human activity variables, mapping the backbone of the complex interplay between intervening physical observables—such as NO2 emissions, energy consumption, intervening climate variables, and different flavors of human mobility flows—to a causal network model. To identify a tipping point during the period of observation, denoting the presence of a regime shift between distinct network states (i.e., before and during the shock), we introduce a novel information-theoretic method based on statistical divergence widely used in statistical physics. We find that despite a measurable decrease in NO2 concentration, due to an overall decrease in human activities, locking down a region as a climate change mitigation is an insufficient remedy to reduce emissions. Our results provide a functional characterization of socioenvironmental interdependent systems, and our analytical framework can be used, more generally, to characterize environmental changes and their interdependencies using statistical physics.
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spelling doaj-art-b490539d12d14f6bb43eb74b40fb7a3f2025-08-20T02:23:30ZengWileyComplexity1099-05262022-01-01202210.1155/2022/5677568COVID-19 Lockdown Unravels the Complex Interplay between Environmental Conditions and Human ActivitySebastian Raimondo0Barbara Benigni1Manlio De Domenico2CoMuNe LabCoMuNe LabCoMuNe LabDuring the COVID-19 epidemic, draconian countermeasures forbidding nonessential human activities have been adopted in several countries worldwide, providing an unprecedented setup for testing and quantifying the current impact of humankind on climate and for driving potential sustainability policies in the postpandemic era from a perspective of complex systems. In this study, we consider heterogeneous sources of environmental and human activity observables, considered as components of a complex socioenvironmental system, and apply information theory, network science, and Bayesian inference to analyze their structural relations and nonlinear dynamics between January 2019 and August 2020 in northern Italy, i.e., before, during, and after the national lockdown. The topological structure of a complex system strongly impacts its collective behavior; therefore, mapping this structure is essential to fully understand the functions of the system as a whole and its fragility to unexpected disruptions or shocks. To this aim, we unravel the causal relationships between the 16 environmental conditions and human activity variables, mapping the backbone of the complex interplay between intervening physical observables—such as NO2 emissions, energy consumption, intervening climate variables, and different flavors of human mobility flows—to a causal network model. To identify a tipping point during the period of observation, denoting the presence of a regime shift between distinct network states (i.e., before and during the shock), we introduce a novel information-theoretic method based on statistical divergence widely used in statistical physics. We find that despite a measurable decrease in NO2 concentration, due to an overall decrease in human activities, locking down a region as a climate change mitigation is an insufficient remedy to reduce emissions. Our results provide a functional characterization of socioenvironmental interdependent systems, and our analytical framework can be used, more generally, to characterize environmental changes and their interdependencies using statistical physics.http://dx.doi.org/10.1155/2022/5677568
spellingShingle Sebastian Raimondo
Barbara Benigni
Manlio De Domenico
COVID-19 Lockdown Unravels the Complex Interplay between Environmental Conditions and Human Activity
Complexity
title COVID-19 Lockdown Unravels the Complex Interplay between Environmental Conditions and Human Activity
title_full COVID-19 Lockdown Unravels the Complex Interplay between Environmental Conditions and Human Activity
title_fullStr COVID-19 Lockdown Unravels the Complex Interplay between Environmental Conditions and Human Activity
title_full_unstemmed COVID-19 Lockdown Unravels the Complex Interplay between Environmental Conditions and Human Activity
title_short COVID-19 Lockdown Unravels the Complex Interplay between Environmental Conditions and Human Activity
title_sort covid 19 lockdown unravels the complex interplay between environmental conditions and human activity
url http://dx.doi.org/10.1155/2022/5677568
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AT barbarabenigni covid19lockdownunravelsthecomplexinterplaybetweenenvironmentalconditionsandhumanactivity
AT manliodedomenico covid19lockdownunravelsthecomplexinterplaybetweenenvironmentalconditionsandhumanactivity