Influence of weather and seasonal variations in temperature and humidity on supersaturation and enhanced deposition of submicron aerosols in the human respiratory tract

Ishmatov, A. N.

doi:10.1016/j.atmosenv.2019.117226

Cited by 25 publications

(17 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Yet, because VRDs are primarily transmitted by droplets exhaled by infected subjects, environmental conditions may also play a major role in shaping their spread. 12,13 Previous studies have argued that cold and dry environments were conducive to the survival and transport of VRD-infected droplets, unlike warm and humid environments. 1,6 This hypothesis seems supported by empirical relationships applied to country-level data, 7,14,15,16 though in the case of COVID-19 initial results suggest that weather and climate conditions may have limited effects on the spread of the disease.…”

Section: Mainmentioning

confidence: 99%

An environmental determinant of viral respiratory disease

Choi

Tuel

Eltahir

2020

Preprint

View full text Add to dashboard Cite

The evident seasonality of influenza suggests a significant role for weather and climate as one of several determinants of viral respiratory disease (VRD), including social determinants which play a major role in shaping these phenomena. Based on the current mechanistic understanding of how VRDs are transmitted by small droplets, we identify an environmental variable, Air Drying Capacity (ADC), as an atmospheric state-variable with significant and direct relevance to the transmission of VRD. ADC dictates the evolution and fate of droplets under given temperature and humidity conditions. The definition of this variable is rooted in the Maxwell theory of droplet evolution via coupled heat and mass transfer between droplets and the surrounding environment. We present the climatology of ADC, and compare its observed distribution in space and time to the observed prevalence of influenza and COVID-19 from extensive global data sets. Globally, large ADC values appear to significantly constrain the observed transmission and spread of VRD, consistent with the significant coherency of the observed seasonal cycles of ADC and influenza. Our results introduce a new environmental determinant, rooted in the mechanism of VRD transmission, with potential implications for explaining seasonality of influenza, and for describing how environmental conditions may impact to some degree the evolution of similar VRDs, such as COVID-19.

show abstract

Section: Mainmentioning

confidence: 99%

An environmental determinant of viral respiratory disease

Choi

Tuel

Eltahir

2020

Preprint

View full text Add to dashboard Cite

show abstract

“…Studies have shown that high deposition rates of aerosols inhaled in hot and humid environments may indicate that individuals face higher health risks than normal environmental conditions and that patients are more likely to develop respiratory symptoms [ 37 ]. A recent study also suggests that high humidity and heat in the air favor the deposition of submicron aerosols and infectious aerosols in the respiratory tract, which may be associated with an increase in respiratory infections, asthma, and chronic obstructive pulmonary disease [ 38 ]. Studies have shown that the effect of total suspended particle on hospitalization for COPD may be increased under low humidity conditions [ 39 ].…”

Section: Discussionmentioning

confidence: 99%

The role of absolute humidity in respiratory mortality in Guangzhou, a hot and wet city of South China

Chen

Liu

Lin

et al. 2021

Environ Health Prev Med

View full text Add to dashboard Cite

Background For the reason that many studies have been inconclusive on the effect of humidity on respiratory disease, we examined the association between absolute humidity and respiratory disease mortality and quantified the mortality burden due to non-optimal absolute humidity in Guangzhou, China. Methods Daily respiratory disease mortality including total 42,440 deaths from 1 February 2013 to 31 December 2018 and meteorological data of the same period in Guangzhou City were collected. The distributed lag non-linear model was used to determine the optimal absolute humidity of death and discuss their non-linear lagged effects. Attributable fraction and population attributable mortality were calculated based on the optimal absolute humidity, defined as the minimum mortality absolute humidity. Results The association between absolute humidity and total respiratory disease mortality showed an M-shaped non-linear curve. In total, 21.57% (95% CI 14.20 ~ 27.75%) of respiratory disease mortality (9154 deaths) was attributable to non-optimum absolute humidity. The attributable fractions due to high absolute humidity were 13.49% (95% CI 9.56 ~ 16.98%), while mortality burden of low absolute humidity were 8.08% (95% CI 0.89 ~ 13.93%), respectively. Extreme dry and moist absolute humidity accounted for total respiratory disease mortality fraction of 0.87% (95% CI − 0.09 ~ 1.58%) and 0.91% (95% CI 0.25 ~ 1.39%), respectively. There was no significant gender and age difference in the burden of attributable risk due to absolute humidity. Conclusions Our study showed that both high and low absolute humidity are responsible for considerable respiratory disease mortality burden, the component attributed to the high absolute humidity effect is greater. Our results may have important implications for the development of public health measures to reduce respiratory disease mortality.

show abstract

“…Li and Zhao et al [ 9 ] used numerical simulation technology to study the exhalation and inhalation of the human body model, and the movement of exhaled air from the nose was simulated. In a calm environment, due to the effect of buoyancy [ 10 ], the exhaled air jet has a tendency to go down first and then up. This is because the surrounding air temperature is usually lower than the temperature of the exhaled air, which is generally kept between 32–33 °C, and the temperature will change with the entrainment of the surrounding air in the jet process.…”

Section: Research Status Of Virus Aerosol Transmission In Enclosed Spacesmentioning

confidence: 99%

Study on the transmission route of virus aerosol particles and control technology of air conditioning in the enclosed space

Cao

Sun

Zhao³

et al. 2021

Eur. Phys. J. Plus

View full text Add to dashboard Cite

Influence of weather and seasonal variations in temperature and humidity on supersaturation and enhanced deposition of submicron aerosols in the human respiratory tract

Cited by 25 publications

References 68 publications

An environmental determinant of viral respiratory disease

An environmental determinant of viral respiratory disease

The role of absolute humidity in respiratory mortality in Guangzhou, a hot and wet city of South China

Study on the transmission route of virus aerosol particles and control technology of air conditioning in the enclosed space

Contact Info

Product

Resources

About