Latest Psychrometrics Stories
PASADENA, Calif., March 10 /PRNewswire-FirstCall/ -- VIASPACE Inc. (OTC Bulletin Board: VSPC) announced today that the United States Patent and Trademark Office issued patent number 7, 499,169 to VIASPACE on March 3, 2009. The patent covers detection and measurement of water vapor (humidity) in gas streams for fuel cells and exhaust streams from combustion processes such as automobiles and factory smokestacks. Inventors are Nathan Hurvitz and VIASPACE CEO Dr. Carl Kukkonen....
A U.S.-Australian study has determined high humidity levels, through a process called water vapor feedback, can aggravate global warming. Texas A&M University Professor Andrew Dessler says warming due to increases in greenhouse gases will lead to higher humidity in the atmosphere. And because water vapor itself is a greenhouse gas, this will cause additional warming. It's a vicious cycle, said Dessler. Warmer temperatures mean higher humidity, which in turn leads to even more warming....
It has been known that the influenza virus flourishes in dry air.However, new research notes that a key to prevention is complete humidity, not the normally touted relative humidity.Relative humidity differs depending on the air temperature; absolute humidity simply does not, says the report published on Tuesday in Proceedings of the National Academy of Science."The correlations were surprisingly strong. When absolute humidity is low, influenza virus survival is prolonged and...
PASADENA, Calif., Feb. 5 /PRNewswire-FirstCall/ -- VIASPACE Inc. (OTC Bulletin Board: VSPC) announced today that it has received Notice of Allowance from the United States Patent and Trademark Office for its patent application entitled Fuel Cell and Products of Combustion Humidity Sensor. The patent application relates to detection and measurement of water vapor (humidity) in gas streams for fuel cells and exhaust streams from combustion processes. The patent fees have been paid and the...
Water vapor is known to be Earth's most abundant greenhouse gas, but the extent of its contribution to global warming has been debated. Using recent NASA satellite data, researchers have estimated more precisely than ever the heat-trapping effect of water in the air, validating the role of the gas as a critical component of climate change.Andrew Dessler and colleagues from Texas A&M University in College Station confirmed that the heat-amplifying effect of water vapor is potent enough to...
By Ann Robinson and Annie Vernon A discussion of air and moisture barriers -- hmmm, that's enough to make you stop reading immediately, right? But what if we told you the proper construction materials and techniques could save you big money on energy bills and save your home from mold and other moisture-related problems? Letting air and moisture penetrate your home has several adverse effects. Mold and mildew grow in dark, damp spaces, even here in the deserts of Utah. Not only can mold...
By TINI TRAN By Tini Tran The Associated Press BEIJING After all the worries about Beijing's pollution, in the end, withering heat and humidity took a greater toll on Olympic athletes. Saturday marked the first outdoor endurance competition - the grueling 152-mile men's cycling road race that started at the historic Temple of Heaven and wound up at the Great Wall. The capital's thick haze from the last few days lifted a bit, allowing sunlight through as riders wound their way through...
A Western crown crane catches drops of cool water from an air- conditioning unit on a idling bus Sunday in Al-Areen Wildlife Park in Sakhir, Bahrain. High humidity and temperatures reaching 108 degrees made for a steamy day for people and wildlife in the Persian Gulf island country. Originally published by Staff Reports. (c) 2008 Tulsa World. Provided by ProQuest Information and Learning. All rights Reserved.
By The Moultrie Observer, Ga. Aug. 6--MOULTRIE -- With temperatures surpassing the 100-degree mark across Southwest Georgia this week, Public Health officials are warning residents to take precautions to avoid dehydration, heat stroke and other potentially life-threatening conditions. The body usually cools itself by perspiring, but a combination of high humidity and sweltering heat, like the conditions blanketing the region now, can overwhelm its ability to self-regulate. "With weather...
By AP photo A western crown crane catches drops of water from the air- conditioning unit on a idling bus in Al-Areen Wildlife Park in Sakhir, Bahrain, on Sunday. High humidity and temperatures reaching 108 degrees made for a steamy day for people and wildlife in the (c) 2008 Charleston Gazette, The. Provided by ProQuest Information and Learning. All rights Reserved.
Latest Psychrometrics Reference Libraries
Surface Dew-points can play a huge role in weather forecasting. The first such role is that it helps determine the amount of moisture in the atmosphere for a given point. If we look at the current dew-point map above from January 28, 2013 we can note several things of interest. First, if we look at where the black circle is around the number 70, we can make note that this air right off the coast of Texas is at a dew point of 70F. The temperature outside must be above 70F, because the...
The map above shows our dew-point temperatures which is an important temp when it comes to weather. The dew-points help us determine how much moisture is in the atmosphere. If we look at the circle placed over Southern Mississippi we can see temps in the Mid 70’s. That is considered to be very saturated and humid type of weather. When you walk outside it feels very uncomfortable. While if we look back in Nevada we see 15, this is more respectful of being very dry air. This type of air also...
So why is there so much heat and humidity rising up into the Northern Plains creating a surge of hot weather? The answer is in the weather map above. If we look over Lake Michigan we see an area of High pressure which has a clockwise flow over the region. So places on the East are having cooler weather as they are getting the air from Canada pushing down towards them. North Dakota into the Gulf Coast are on the back side of the high so there air is coming from the Gulf of Mexico. If...
Water vapor (aqueous vapor) is the gaseous phase of water. It is one stage of the water cycle of our planet. Water vapor is formed from either evaporation or heating of liquid water, or from the sublimation of ice. In nature, water vapor is continuously produced by evaporation and removed by condensation. Along with carbon dioxide and methane gas, water vapor is one of the greenhouse gases. The release of water molecules from liquid water is considered evaporation. The transition of these...
Haze is a type of atmospheric phenomenon where dust, smoke and dry particles in the air obscure the sky's clarity. Haze is created through various activities including farming, traffic pollution,and even wildfires. The World Meteorological Organization (WMO) categorizes the obscuration of the Earth's atmosphere by a list of different types of atmospheric phenomena. One of these is haze. The other classifications are: fog, ice fog, steam fog, mist, smoke, volcanic ash, dust, sand, and snow....
