INTRODUCTION
Aerosol is a system of solid or liquid particles suspended in air or other gaseous environment. Aerosols vary in size and composition, they can be naturally or manmade generated. Aerosols are minute particles suspended in the atmosphere. When these particles are sufficiently large, we notice their presence as they scatter and absorb sunlight. Aerosols interact directly and indirectly with the earth’s radiation budget and climate. In direct effect the aerosols scatter sunlight. In indirect effect the aerosol can modify the size of cloud.
Any particle suspended in atmosphere is aerosol .it does not include water vapor and gas. There are the two different sources of aerosol one is the natural source and other is anthropological or the men made aerosol example of natural sources is volcanic aerosol, sea bridges and sea Sault. Because of the wind natural sources are more dominant and anthropologically affect the human health. Size of aerosol varies from 10^-3 to 10^2 um. Size is depending on the sources.
An aerosol is a colloid of fine solid
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Key parameters for determining the indirect effect are the effectiveness of an aerosol particle to act as a cloud condensation nucleus, which is a function of the size, chemical composition, mixing state and ambient environment. In particular, aerosols act as nuclei on which water condenses. A high concentration of aerosols thus leads to cloud that contain many more and hence smaller, water droplets then clouds with the same water content formed in cleaner areas. As such cloud are more highly reflecting, this induces a negative radiative forcing which is referred to as the first indirect, the cloud-albedo effect. The effect of aerosols on cloud’s height, lifetime and water content has classically being referred to as the second indirect
The Dust Bowl was a treacherous storm, which occurred in the 1930's, that affected the midwestern people, for example the farmers, and which taught us new technologies and methods of farming. As John Steinbeck wrote in his 1939 novel The Grapes of Wrath: "And then the dispossessed were drawn west- from Kansas, Oklahoma, Texas, New Mexico; from Nevada and Arkansas, families, tribes, dusted out. Carloads, caravans, homeless and hungry; twenty thousand and fifty thousand and a hundred thousand and two hundred thousand. They streamed over the mountains, hungry and restless - restless as ants, scurrying to find work to do - to lift, to push, to pull, to pick, to cut - anything, any burden to bear, for food. The kids are hungry. We got no place to live. Like ants scurrying for work, for food, and most of all for land." The early thirties opened with prosperity and growth. At the time the Midwest was full of agricultural growth. The Panhandle of the Oklahoma and Texas region was marked contrast to the long soup lines of the Eastern United States.
Li, Zhanqing, Feng Niu, Jiwen Fan, Yangang Liu, Daniel Rosenfeld and Yanni Ding. "Long-term impacts of aerosols on the vertical development of clouds and precipitation." Nature Geoscience, 4. 12 (2011): 888--894. Print.
The great dust bowl of the 1930’s was a very traumatic disaster that affected the lives of many. Not only did the dust bowl affect humans but it also affected animals and their homes too.
Ever wonder what the atmosphere consists of? What's it made out of, what type of weather patterns are there, what does a hurricane look like, or other natural phenomenon's of today's weather ? Well America, hopefully now we can! Meteorology is the study of the atmosphere and the effects it has on our weather. Climatology focuses on how atmospheric changes alter the world’s climates, aeronomy is the study of the upper parts of the atmosphere. Meteorology focuses on the lower parts of the atmosphere, primarily the troposphere, where most weather takes place. It has been released that under the supervision of NASA, President Dwight D Eisenhower and the National Oceanic and Atmospheric Association (NOAA) that they have launched a satellite called TIROS 1 out of Cape Canaveral, Florida that will observe, record, and transmit data back to headquarters. The first ever weather satellite has arrived and with much hope will change weather prediction for the future.
Cool air can't hold as much water vapor as warm air, so some of the vapor condenses onto tiny pieces of dust that are floating in the air and forms a tiny droplet around each dust particle.
Aerogel is a synthetic porous ultra-light material derived from a gel, in which the liquid component of the gel has been replaced with a gas, resulting in a solid with extremely low density and low thermal conductivity. Nicknames include "frozen smoke", "solid smoke", "solid air" or "blue smoke" owing to its translucent quality and the way light scatters in the material. However, it feels like Styrofoam to the touch.
Firstly, the atmosphere contains all the air in Earth’s system from the air we breathe to the clouds in the sky. The atmosphere “extends from less than 1m below the surface to more than 10,000km above the planet’s surface. The upper portion of the atmosphere protects the organisms of the biosphere from the Sun’s ultraviolet radiation and absorbs/emits
Now what causes all this chaos is a mixture of gases. “Greenhouse gases are transparent to certain wavelengths of the suns radiant energy, allowing them to penetrate deep into the atmosphere or all the way into the Earth’s surfac...
Asthma is a disease that currently has no cure and can only be controlled and managed through different treatment methods. If asthma is treated well it can prevent the flare up of symptoms such as coughing, diminish the dependence on quick relief medication, and help to minimize asthma attacks. One of the key factors to successful treatment of asthma is the creation of an asthma action plan with the help of a doctor that outlines medications and other tasks to help control the patient’s asthma ("How Is Asthma Treated and Controlled?"). The amount of treatment changes based on the severity of the asthma when it is first diagnosed and may be the dosage may be increased or decreased depending on how under control the patient’s asthma is. One of the main ways that asthma can be controlled is by becoming aware of the things that trigger attacks. For instance staying away from allergens such as pollen, animal fur, and air pollution can help minimize and manage the symptoms associated with asthma. Also if it is not possible to avoid the allergens that cause a patient’s asthma to flare up, they may need to see an allergist. These health professionals can help diagnosis what may need to be done in other forms of treatment such as allergy shots that can help decrease the severity of the asthma ("How Is Asthma Treated and Controlled?").
Throughout the years, advances in technology and scientific development have greatly influenced our global community. Various anthropogenic factors, such as the increased combustion of fossil fuels and widespread usage of manmade chemicals, have greatly affected the planet's atmosphere and it's ozone layer.
An aerosol is not a simple cleaner or polish; it is a colloidal system. That means it consists of finely divided liquid or solid particles, called a product, dispersed in and surrounded by a gas. The most commonly used gases, or propellants, are chlorinated hydrocarbons, butane, propane, isobutane, vinyl chloride, and nitrogen. Nitrogen is used particularly for products when the taste or smell of the propellant is not desired in the product, for ex...
Since the beginning of the industrial revolution, atmospheric concentrations of carbon dioxide have increased nearly 30%, methane concentrations have more than doubled, and nitrous oxide concentrations have risen by about 15%. These increases have enhanced the heat-trapping capability of the earth’’s atmosphere. Sulfate aerosols, a...
...operties. Char is weak light absorption with a strong spectral dependence while Soot is strong light absorption characteristics with little spectral dependence (Han et al., 2010). By the way, Particle matter (PM) was associated with cardiovascular mortality and morbidity. Spontaneous Hypertensive Rate was the effect of single intrataracheal of PM2.5, it increased the parasympathetic nervous activity and decreased the heart rate (Ryoko, 2008). PM consists of a complex mixture of solid and liquid particles of organic matter, mineral dust, secondary inorganic aerosols and trace metals, as well as water and unspecified compounds (Katarzyna et al., 2011). In order to avoid the impact negative on public health, climate change and keep an economic growth with acceptable environmental loads, the investigations of emission sources of air pollutants are essentially important.
It’s no secret that fragrance matters to us. It is a huge part of how we experience the products we use and the world at large. For this reason, it’s a deal breaker when it comes to our beauty and personal care products, especially if it’s a product that you leave on the hair and skin or a fragrance that lingers. Many of us have given up products that worked well because we could not stand the smell or because our significant other complained. The fact that fragrance affects not just us but those around us is something we often tend to overlook. Fashion icon Sarah Jessica Parker of Sex and the City once said this about fragrance "It 's immediately communicating more than your clothes, which we think tell our story, right? But clothes don 't invade anybody else 's space.” That’s so true. You can look away if a coworker is wearing something you don’t like, but you can’t hold your breath all day, now can you? Fragrance can even linger in a space long after the wearer has gone or linger on your close, long after you hugged your best friend. Fragrance has such a
The atmosphere is an open system that consists of a gaseous mixture enveloping a planet (Answers.com). These gasses, known as air, include O2, N2 and H2O. The atmosphere is also composed of water, ice and dust particles. Atmosphere functions like a blanket, keeping Earth's heat from escaping into space (Lenkeit). It has also been compared to a greenhouse: like glass it lets short wave insulation inside, but keeps most of long wave ground radiation from going out (Lenkeit).