Introduction Conclusions References Tables Figures ◭ ◮ ◭ ◮ Back Close Full Screen / Esc Abstract Introduction Conclusions References Tables Figures ◭ ◮ ◭ ◮ Back Close Full Screen / Esc Abstract Near-total depletions of ozone have been observed in the Arctic spring since the mid 1980s. The autocatalytic cycles involving reactive halogens are now recognized to be of main importance for Ozone Depl...

Poultry industry is an important production system due to providing remarkable portion of the human food and protein needs. Considering the necessity of environmental protection, the amount of environmental impacts of a turkey production unit in Iran was determined using life cycle assessment method. The required information were collected through questionnaires and interviews with farm owners....

A continual trend of ozone depletion has drawn much attention to the biologically harmful UV-B radiation from the Sun reaching the Earth’s surface. Satellite remote sensing provides a sole means of monitoring the global distribution of surface UVB. At present, there are very few inversion algorithms with sufficient accuracy and robustness for operational application. A new algorithm is proposed...

Remote sensing of bromine monoxide (BrO) from the Ozone Monitoring Instrument (OMI) and other satellite instruments opens the possibility to extend our understanding of atmospheric halogen chemistry from local-scale studies to global scales. In the Arctic springtime boundary layer, these bromine monoxide radicals and bromine atoms are known to destroy ozone [1] and oxidize mercury [2], leading ...

The Cover Feature shows that hydroxyl-radical-initiated degradation and transformation of methyl ethyl iodides are crucial in the iodine chemical cycle marine boundary layer. Their atmospheric would produce atomic iodine, which leads to ozone layer depletion. design by Feng-Yang Bai, Jia-Ming Sun Co-workers. More information can be found Research Article Shuang Ni, Zhen Zhao co-workers.

There is now strong evidence that a consequence of human activities is the inadvertent accumulation of a variety of trace gases in the earth’s atmosphere. In the past decade, these global-scale changes in the chemical composition of the atmosphere have led to a very significant depletion of the stratospheric ozone layer over Antarctica in the southern spring months and also at northern latitude...

Ultraviolet radiation (UVR) is a naturally occurring stressor to most forms of life. The sole relevant source of this stressor is the sun. The earth’s stratospheric ozone layer reduces the amount of UVR that reaches the earth’s surface. The potential for depletion of this ozone layer due to human activities and the subsequent increase in UVR at the earth’s surface is a global environmental conc...

The primary motivation behind the considerable effort in studying stratospheric ozone depletion is the potential for biological consequences of increased solar UVB (280-315 nm) radiation. Yet, direct links between ozone depletion and biological impacts have been established only for organisms of Antarctic waters under the influence of the ozone "hole;" no direct evidence exists that ozone-relat...

Ultraviolet radiation (UVR) is a naturally occurring stressor to most forms of life. The sole relevant source of this stressor is the sun. The earth’s stratospheric ozone layer reduces the amount of UVR that reaches the earth’s surface. The potential for depletion of this ozone layer due to human activities and the subsequent increase in UVR at the earth’s surface is a global environmental conc...

This work surveys the depth and character of ozone depletion in the Antarctic and Arctic using available long balloon-borne and ground-based records that cover multiple decades from ground-based sites. Such data reveal changes in the range of ozone values including the extremes observed as polar air passes over the stations. Antarctic ozone observations reveal widespread and massive local deple...