scholarly journals The Association between Weather Conditions (Ambient Air Temperature and Relative Humidity) with Coronavirus Disease (COVID-19) Risk in Bandar Abbas, Iran

2021 ◽  
Author(s):  
Yadolah Fakhri ◽  
Mostafa Hadei ◽  
Ali Rostami ◽  
Ali Mouseli
Keyword(s):  
Relative Humidity ◽  
Air Temperature ◽  
Weather Conditions ◽  
Ambient Air ◽  
P Value ◽  
Spearman Correlation ◽  
Ambient Air Temperature ◽  
Spearman Correlation Test ◽  
Bandar Abbas ◽  
And Control

Abstract Background: This study was devoted to evaluate the association between COVID-19 infection and weather conditions in Bandar Abbas, Iran. Methods: The positive cases data was retrieved from the Ministry of Health and Medical Education of Iran (MOHME) and weather conditions from the Iran meteorological organization (IMO) from the 01, October 2020 to 27, November 2020. The components of weather consist of average of the ambient air temperature (°C) and relative humidity (%). The Spearman correlation test was used to determine the association between weather conditions (temperature and relative humidity) with COVID-19 infection.Results: Spearman analysis showed that air temperature (Coefficient = -0.303 and P-value = 0.001) were negatively associated with COVID-19 infection. However, no significant association was observed between relative humidity (Coefficient = 0.088 and P-value = 0.340) and COVID-19 infection. Hence, the ambient air temperature can be considered as a considerable variable in the COVID-19 infection in Bandar Abbas. Conclusions: The results of this study can be used for prevention and control of COVID-19 infection in areas with similar meteorological conditions in world.

scholarly journals Association among Weather Conditions, Ambient Air Temperature, and Sedentary Time in Chinese Adults

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Xu Wen ◽  
Yiqun Ma ◽  
Bing Yuan ◽  
Fubaihui Wang
Keyword(s):  
Air Temperature ◽  
Sedentary Time ◽  
Meteorological Data ◽  
Weather Condition ◽  
Weather Conditions ◽  
Ambient Air ◽  
Chinese Adults ◽  
Ambient Air Temperature ◽  
Meteorological Observatory ◽  
Rainy Days

This study is aimed to quantify the association among weather conditions, ambient air temperature, and sedentary time in Chinese adults. The participants were 3,270 Chinese users of a wrist-worn activity tracker. Their daily activity data were collected using an algorithm based on raw data to determine the sedentary time. The data of ambient air temperature and weather were collected from the meteorological data released by China Central Meteorological Observatory. Two-level linear regression analyses showed that weather conditions had a significant influence on sedentary time in Chinese adults after adjustments for some covariates were made. When the weather condition changed from rainy days to sunny and cloudy days, sedentary time might decrease by about 6.89 and 5.60 min, respectively. In conclusion, weather conditions were independently associated with sedentary time in Chinese adults. The daily sedentary time was shorter on sunny and cloudy days than on rainy days.

scholarly journals Uncertainties of Derived Dewpoint Temperature and Relative Humidity

2004 ◽  
Vol 43 (5) ◽  
pp. 821-825 ◽  
Author(s):  
X. Lin ◽  
K. G. Hubbard
Keyword(s):  
Relative Humidity ◽  
Uncertainty Analysis ◽  
Air Temperature ◽  
Ambient Air ◽  
Indirect Measurement ◽  
Humidity Sensors ◽  
Ambient Air Temperature ◽  
Dewpoint Temperature ◽  
The World ◽  
Uncertainty Analyses

Abstract This paper presents an evaluation of derived dewpoint temperature and derived relative humidity, in which the dewpoint temperature is calculated using measured ambient air temperature and measured relative humidity variables and the derived relative humidity is calculated from measured dewpoint temperature. The derived dewpoint temperature and relative humidity are calculated using algorithms provided by the World Meteorological Organization. The method of uncertainty analysis, provided by the National Institute of Standards and Technology, is applied to calculate the uncertainties of an indirect measurement of derived dewpoint temperature and derived relative humidity. The results from the uncertainty analyses of derived and observed variables suggest that the use of derived dewpoint temperature and derived relative humidity involves risk because the uncertainties of modern dewpoint temperature and relative humidity sensors can create several degrees Celsius of error in the derived dewpoint temperature and several percent in the derived relative humidity.

Evaluation of Abaya Design Using Thermal Manikin

2013 ◽  
Vol 834-836 ◽  
pp. 1744-1748
Author(s):  
Salwa Tashkandi ◽  
Sinnappoo Kanesalingam ◽  
Li Jing Wang
Keyword(s):  
Relative Humidity ◽  
Thermal Insulation ◽  
Air Temperature ◽  
Ambient Air ◽  
Thermal Manikin ◽  
Ambient Air Temperature ◽  
The Mean ◽  
Skin Temperatures ◽  
Insulation Performance

The main objective of this research was to measure the thermal insulation using a thermal manikin dressed in various ensembles of clothing within the abaya. A range of clothing and abaya has been tested using a heated manikin. The thermal manikin experiments were conducted in dry condition. The ambient air temperature for the dry tests was set at 23oC and Relative Humidity at 50% and the mean skin temperatures averaged at 35oC. The results showed that the daily clothing and abaya affect the thermal insulation performance. It is uncomfortable to wear more layers of the daily wear clothing within the abaya. The abaya worn over the head thermally insulated slightly more than the abaya worn from the shoulder.

THERMAL PERFORMANCE EVALUATION OF GREEN LIVING WALLS IN COMPOSITE CLIMATE

2020 ◽  
Vol 8 (4) ◽  
pp. 8-16
Author(s):  
Shruti Sharad Nagdeve ◽  
Shweta Manchanda ◽  
Anil Dewan
Keyword(s):  
Relative Humidity ◽  
Air Temperature ◽  
Ambient Air ◽  
Significant Drop ◽  
Heat Gain ◽  
Ambient Air Temperature ◽  
High Solar Radiation ◽  
The Difference ◽  
Save Energy ◽  
The Impact

Purpose of the study: Due to high solar radiation and extreme heat gain in composite climates, the envelope or the façade of the building becomes an essential part to modulate the heat transfer and temperature in the indoor environment. A passive sustainable approach to tackle heat gain is by adopting green living facades as the exterior skin. The objective of this research is to identify the potential of green living walls in modulating temperature and relative humidity in the composite climate of India. Methodology: This research is based on data collection in the form of a Case Study. The paper evaluates the difference of variation in temperature and relative humidity of two façade samples of the same building, one with a “green living facade” and one without it. Main Findings: The research aimed to justify that a green living facade may act as a passive strategy for composite climates. The result demonstrated that there is a significant temperature reduction between the ambient air temperature and indoor room temperature. The result also showed a notable change between ambient air temperature and the gap between the green living façade and the surface of the wall. Implications: Significant drop in indoor ambient temperature in composite climate may save energy for cooling or heating demands. Application of this study: This is a pilot study in order to carry out the main study for a similar application in order to categorize this as a passive sustainable façade strategy. Novelty/Originality of this study: The study is one of its kind attempt to investigate the impact of vertical green walls on thermal comfort in the composite climate of India.

scholarly journals A NEW APPROACH TO THE ANALYSIS OF THE INFLUENCE OF WEATHER CONDITIONS ON THE HUMAN ORGANISM

2018 ◽  
Vol 97 (11) ◽  
pp. 1038-1042 ◽  
Author(s):  
Marina M. Saltykova ◽  
I. P. Bobrovnitskii ◽  
M. Yu. Yakovlev ◽  
A. D. Banchenko ◽  
S. N. Nagornev
Keyword(s):  
Air Temperature ◽  
Human Body ◽  
Atmospheric Pressure ◽  
Weather Conditions ◽  
Ambient Air ◽  
The Arctic ◽  
Human Organism ◽  
New Approach ◽  
Ambient Air Temperature ◽  
Experimental Stand

Despite the long history of studying the influence of meteo- and heliogeophysical factors on the human body, the mechanisms of this influence remain unclear. The inability to influence weather conditions makes it necessary to develop new, experimental approaches to such research. To analyze the effect of the ambient air temperature, atmospheric pressure, moisture and other meteorological indices on the human body, and to identify the mechanisms of such impact, there is proposed a new approach using an appropriate experimental stand (weather experimental stand). The basis of such stand can be composed of a climatic chamber, the technical characteristics of which allow carrying out research with human participation. In such studies, various physiological and biochemical indices can be monitored, as well as psychological tests can be administered. Such studies are of particular relevance in relation to the intensive development of the Arctic since in high latitudes the influence of heliogeophysical and meteorological factors is very pronounced. The climate of the Arctic is characterized by a combination of significant temperature fluctuations, atmospheric pressure, low absolute and high relative humidity, strong winds, significant changes in the geomagnetic field and atmospheric electricity, a pronounced deficit of UV radiation and light aperiodicity. Features of the natural conditions of the North, apparently, cause a high incidence of the diseases of the circulatory and respiratory system in the alien population (in comparison with the indigenous one). In addition, the article draws attention to the fact that the only weather factor, whose mechanisms of influence are sufficiently well studied, is the change in ambient air temperature, and these mechanisms were studied through research done under experimental conditions.

Treatment of a Municipal Leachate Under Multi-Variable Conditions

1982 ◽  
Vol 17 (1) ◽  
pp. 135-148
Author(s):  
P.T. Wong ◽  
D.S. Mavinic
Keyword(s):  
Air Temperature ◽  
Nutrient Loading ◽  
Ambient Air ◽  
Removal Rates ◽  
Ambient Air Temperature

Abstract The treatability of a municipal leachate (BOD5 = 8090 mg/L) was investigated, by aerobic biostabilization, at a nutrient loading of BOD5:N:P of 100:3.2:1.1. The first stage effluents were subsequently polished by lime-magnesium coagulation. The ranges of ambient air temperature and sludge age studied were 5° to 25°C and 5 to 20 days, respectively. In the biostabilization phase, a BOD5:N:P loading of 100:3.2:1.1 was found to be “adequate” for treatment. Organic and metal removals in the first stage units were excellent. Under all conditions investigated, except for the two units close to washout conditions (5-day sludge age units at 5° and 10°C), BOD5 and COD removals of at least 99.4 and 96.4 percent, respectively, were achieved. Similarly, removal rates for most of the metals monitored were greater than 90 percent. In general, the removal of residual contaminants was not enhanced significantly by the addition of magnesium in the lime-magnesium polishing step.

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