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Evapotranspiration
The loss of water from the soil by evaporation and by transpiration from the plants growing in the soil, which rises with air temperature. (source: EPA) Background from Wikipedia Evapotranspiration (ET) is the sum of evaporation and plant transpiration. Evaporation accounts for the movement of water to the air from sources such as the soil, canopy interception, and waterbodies. Transpiration accounts for the movement of water within a plant and the subsequent loss of water as vapour through stomata in its leaves. Evapotranspiration is an important part of the water cycle. Potential evapotranspiration (PET) is a representation of the environmental demand for evapotranspiration and represents the evapotranspiration rate of a short green crop, completely shading the ground, of uniform height and with adequate water status in the soil profile. It is a reflection of the energy available to evaporate water, and of the wind available to transport the water vapour from the ground up into the lower atmosphere. Evapotranspiration is said to equal potential evapotranspiration when there is ample water. Arizona Republic,Summer lawns create cool landscape microclimates, pockets of cooler air, by a process called evapotranspiration. Evapotranspiration, or "ET," from a lawn Pastures compared - Oct 15, 2007 Country News,Total water applied was higher for the perennial pastures and double crop system in 2006 than in 2005, due to higher evapotranspiration rates, READERS WRITE - Oct 9, 2007 Atlanta Journal Constitution,Banning outdoor watering is logical because: irrigation of landscaping is a consumptive use (water undergoes evapotranspiration and does not return to Drought Highlights Need To Conserve Water - Oct 8, 2007 The Daily Titan,The water requirements of plants are calculated by determining evapotranspiration rates. Through evapotranspiration, the amount of water used by a plant and Warming climate shrinking Glacier Park's glaciers - Oct 11, 2007 USA TodayHigher temperatures and longer growing seasons also mean more evapotranspiration, and more new vegetation drinking up underground reservoirs. Event shows explosive growth of no-till - Oct 1, 2007 High Plains Journal,One of the projects is to provide on-site reference and crop evapotranspiration (ET) information for more accurate in-season water management. Despite late rainstorms, state still hurting for water - Oct 1, 2007 Salt Lake Tribune,But they do know that evapotranspiration - the amount of water plants need to sustain themselves - grew by 20 percent over the year before. 'Green roofs' could cool warming cities - Sep 28, 2007 New Scientist (subscription),Secondly, the plants also cool the air by evaporating water in a process known as evapotranspiration. Being dense regions of concrete and paved surfaces, Expert sees benefit in reservoir offer - Oct 13, 2007 Charlotte Sun-Herald,That's because the mining eliminates the pine trees and other vegetation -- and that reduces the "evapotranspiration." The natural ecosystem has a limited Droughts Put Damper On Water Use - Oct 12, 2007 Realty Times,Where applicable, weather adjusting ET (for "evapotranspiration") irrigation controllers save water by automatically watering only when necessary. Surviving The Century - Oct 12, 2007 CounterCurrents.org,The maintenance of the forest depends on high rainfall, which largely comes from the evapotranspiration of rainfall elsewhere in the forest. Tech Innovation Awards (Group 6) - Oct 12, 2007 Austin Business Journal (subscription),AccuWater Inc.: AccuWater Irrigation Controller, an (evapotranspiration) ET-based controller that uses microclimate data to model the moisture of the soil The Gospel According to Sir John: Chapter 2 - Oct 9, 2007 CO2 Science Magazine,...because of their high capacity to store carbon and their ability to promote sunlight-reflecting clouds via large-scale evapotranspiration," noting that New lawn-watering restrictions anger property-management groups - Oct 5, 2007 Austin American-Statesman (subscription),...which manages 20 office buildings in North and Northwest Austin, said the city should allow variances for evapotranspiration controllers, devices that Saving Walker Lake really a 'feel good' proposal? Picture Mason ... - Oct 5, 2007 Reno Gazette Journal,Then there is an unknown factor of evapotranspiration in the 57000 acres of river, wetland and floodplain in northern Mason Valley downstream from Yerington City may offer water rebate - Oct 2, 2007 McKinney Courier Gazette,By Brandi Hart, McKinney Courier-Gazette The city’s residential water customers who use evapotranspiration controllers in their irrigation systems could see Drought Monitor: Widespread Heavy Showers Provide Relief Across ... - Sep 27, 2007 CattleNetwork.com,With the growing season effectively over plus dropping temperatures, evapotranspiration rates have also greatly decreased, meaning that any additional Managing irrigation can increase yields - Aug 2, 2007 Fergus Falls Daily Journal,...“The checkbook method is a soil moisture accounting method which uses crop water use (evapotranspiration rate) values and soil water holding capacities to Editorial: Conservation Leaders - Jul 29, 2007 Dallas Morning News (subscription),...•Requiring all new irrigation systems after September 1 to have evapotranspiration (or ET) controllers. ET controllers are really an interesting development Study shows trees regulate water usage - Aug 3, 2007 McCook Daily Gazette,NORTH PLATTE -- Preliminary results from an evapotranspiration study along the Platte River indicate that trees in riparian systems regulate water intake Even in rainy weather, wineries a good summer bet - Aug 8, 2007 News 8 Austin,..."I have a weather station down in the vineyard, it's all computerized, I can track all types of data, I can tell you what ET rates, evapotranspiration, NYE: County corn doing well compared to others - Jul 24, 2007 Wilmington News Journal, OH,According to Noel, since soil moisture plays its role during the warm season when evapotranspiration is critical, this pattern will likely last at least SF Looks At High-Tech Water Saving Method - Aug 7, 2007 KELOLAND TV,But thanks to something called Evapotranspiration Irrigation, that could change. Erik Helland of Landscape Garden Centers says, "Basically you're watering Advanced system to water lawns has been installed at pair of area ... - Aug 6, 2007 Santa Monica Daily Press,The goal is to accurately measure evapotranspiration to .01 of an inch. The weather station was made by Rain Master, a Simi-Valley based company founded in Watering now odds and evens - Aug 16, 2007 Area News,...“Evapotranspiration has already risen six times since mid-winter and August can be a very dry and damaging month without rain.� delegate the release of Rain Master Irrigates Largest “Green� Roof in California - Aug 16, 2007 Business Wire (press release),...overall consumption by accurately measuring weather conditions in order to determine the EvapoTranspiration experienced (ETo) over a 24-hour period, Surviving the season; a fruit growers guide - Aug 13, 2007 Country News,Based on evapotranspiration in the Goulburn Valley, trees use about 9.5 megalitres of water per hectare from October to February. Alternative pavements ease urban-heat effect - Aug 3, 2007 Arizona Republic,As a result, trees grow faster and larger, providing more shade while increasing evapotranspiration. Another form of pervious pavement seen in the Valley by Wider nitrogen pollution buffers better - Jul 30, 2007 Science Daily (press release)...full article Evaporation from plants -- Evapotranspiration (ET) is the sum of evaporation and plant transpiration. Evaporation accounts for the movement of Temperate forests not a fix for global warming - Aug 10, 2007 Mongabay.comThe situation is different in the tropics where higher temperatures result in higher rates of evapotranspiration, the process by which forests release water Chennai yet to wake up to climate change challenges - Jul 21, 2007 Hindu,...“One of the characteristics of climate change is that it will hasten evaporation and evapotranspiration of surface water (thus drying out water-scarce GR scientist conducts first long-term study of effectiveness of ... - Aug 7, 2007 Rapid Growth,...the plants use the water and release it through their leaves (evapotranspiration), lessening the quantity of storm water generated from the roof. Fox on Your Block: Park Hill Party - Aug 2, 2007 My Fox Colorado.com,They perform what is called "evapotranspiration." Liquid in tree leaves is converted to vapor, which actually cools the air. Trees also reduce wind velocity Winfield has history of flooding - Jul 31, 2007 Arkansas City Traveler,..."I know that plants such as corn can affect temperature and relative humidity in the local vicinity during their peak months of evapotranspiration," said Las Vegas area golf courses report billion gallon water savings - Jul 23, 2007 WorldGolf.com,These systems also monitor evapotranspiration, the amount of moisture given off by grasses and plants, so water is applied only as needed. Water Ways: An irrigation system can save time and money and keep ... - Aug 16, 2007 Winston-Salem Journal,Evapotranspiration (ET) is the process by which water is transferred to the atmosphere from vegetative surfaces. The two components of this process are Early Indications Show Wheat Escaped Freeze Injury - 13 Apr 2007 AgNews,Using the weather station data from the Texas High Plains Evapotranspiration Network, Bean determined that the southwest corner of the Panhandle, Cutting Down Trees to Save the Earth - 13 Apr 2007 ScienceBlogsWhen the forests are removed en masse, this evapotranspiration is greatly reduced, allowing the constant solar radiation at the equator to pound with no 'PET' Project Could Reduce East Texas Cities' Water Woes - Apr 6, 2007 AgNews,The evapotranspiration data are calculated and posted daily. To figure how much water to apply, simply add up the numbers, using either the Overton or the Urban forestry: Imperative for life in city - Apr 12, 2007 The Daily Star,During the sunny days, trees intercept solar radiation, and through evapotranspiration they lower the temperature. It is found that a medium sized isolated Skeptics: Trees a root of warming - Apr 11, 2007 The Argus,...enough to outweigh the cooling effects of carbon absorption and evapotranspiration, the process through which water is transferred to the atmosphere. Careful Where You Plant That Tree - Apr 10, 2007 Science Magazine (subscription)They also, through a process known as evapotranspiration, create clouds that bounce back warming rays (ScienceNOW, 12 March). But trees also absorb heat Concerns mount over corporate tree planting schemes - Apr 10, 2007 IT Week,...because the warming carbon-cycle effects of deforestation are overwhelmed by the net cooling associated with changes in albedo and evapotranspiration". Global-warming skeptics take aim at trees - Apr 10, 2007 Inside Bay Area,...enough to outweigh the cooling effects of carbon absorption and evapotranspiration, the process through which water is transferred to the atmosphere. Your business community - Apr 9, 2007 IdahoStatesman.com,..."Mapping Evapotranspiration from Satellites," as one of the top 50 programs in the 2007 Innovations in American Government Award competition. Being proactive earns Rice Operating environmental excellence award - Apr 1, 2007 MyWestTexas.com,At many sites Rice has taken additional remedial action by installing natural clay layers to act as evapotranspiration barriers which aid in the prevention Weather net to save water - Apr 2, 2007 NEWS.com.au,..."This system provides information on evapotranspiration (evaporation that makes it into the air from a plant's root system and up into the canopy) Comments, corrections, clarifications, and c*ckups - Mar 29, 2007 Crikey,...press release here) has indicated that tropical forests do indeed act as a cooling agent, by increased evapotranspiration as well as carbon storage. Dealing with Carbon - Mar 29, 2007 SciScoop,However, biomass affects climate not only through the carbon cycle; it also affects both the absorption of solar radiation and evapotranspiration. Study: Lake Superior summer temps rising - Mar 22, 2007 Science Daily (press release)Evaporation from plants -- Evapotranspiration (ET) is the sum of evaporation and plant transpiration. Evaporation accounts for the movement of water to the Water use in the landscape adds up - Mar 16, 2007 The Valley Chronicle,...which automatically adjust watering schedules based on the time of year and evapotranspiration rates, there is another low-tech solution for those who Drought Monitor: Heavy Rains Rotate Across The Southern Plains - Mar 15, 2007 CattleNetwork.com,Low streamflows and soil moisture will be further stressed as temperatures and evapotranspiration rise, and wildfires had flared up over parts of Florida Lincoln University Dairy Farm marks milestone of 10000 visitors - Mar 14, 2007 Scoop.co.nz,...covered topics such as field capacity, evapotranspiration, irrigation and effluent, irrigation audits, consents to take water, irrigator design and code Drought Monitor: Heavy Rains Rotate Across The Southern Plains - 15 Mar 2007 CattleNetwork.com,Low streamflows and soil moisture will be further stressed as temperatures and evapotranspiration rise, and wildfires had flared up over parts of Florida Lincoln University Dairy Farm marks milestone of 10000 visitors - 15 Mar 2007 Scoop.co.nz,...covered topics such as field capacity, evapotranspiration, irrigation and effluent, irrigation audits, consents to take water, irrigator design and code Specialist says: Producer’s challenge is to match crop with water - Mar 8, 2007 North Texas e-News,...profile helping to get things started, producers should use weather station data gathered by the Texas High Plains Evapotranspiration Network, New said. Whatever the weather, it's heavy going for gamblers - Feb 26, 2007 Guardian Unlimited,...through natural filtration and also through evapotranspiration, which is the grass taking water from the soil, which then evaporates through the leaves. Turn, Turn: The Amazon Gets Seasons - Mar 13, 2007 Science Now,In a process known as evapotranspiration, tree roots absorb rain from the soil, transfer the water through the trunk and up to the leaves, and then return Study may lead to new nanodevices - Mar 12, 2007 Science Daily (press release)Evaporation from plants -- Evapotranspiration (ET) is the sum of evaporation and plant transpiration. Evaporation accounts for the movement of water to the Deficit irrigation complex for alfalfa growers - Mar 9, 2007 Capital Press (subscription),The ET (evapotranspiration) doesn't go down as fast. It goes down slowly and then levels off," Hanson said. "Basically, we have found an ET difference of Irrigation water helps recharge Yakima aquifer - Mar 9, 2007 Capital Press (subscription),Evapotranspiration was estimated to have increased by more than 1.2 million acre feet, the report said. The USGS began the study in June 2000, Dueling hydrologists shoot it out over the Big Chino - Mar 7, 2007 Read It Here,Estimates of this loss, called evapotranspiration (ET), vary wildly for the Big Chino, but the Concerned Observers believe it to run at about 15 percent. Weather widgets - Mar 5, 2007 Tuscaloosa News (subscription),More sophisticated stations also will calculate evapotranspiration -- or how much moisture is being used by plants and how much is going back into the Kahramaa workshop on water policy - Feb 28, 2007 Peninsula On-line,Irrigated crops and surfaces, current practices of irrigation, current water demand, evapotranspiration and net and gross water demands are some of the Soil Moisture Beneath Deciduous Tree Seedlings - Feb 27, 2007 CO2 Science Magazine,Quantifying the effects of phenology on ecosystem evapotranspiration in planted grassland mesocosms using EcoCell technology. El Nino over - Feb 26, 2007 Area News,...the area at a time when normally 42mm is recorded. The evapotranspiration rate was also up, with a 2006 reading of 2121, compared with the average of 1845. Greenhouses are great, but quite costly - Feb 23, 2007 Poughkeepsie Journal,I could also get an attachment that turns the fan into a misting machine (mist helps prevent too-rapid evapotranspiration). Soil (Erosion - Mar 6, 2007 CO2 Science Magazine,...after which the Water Erosion Prediction Project model of Flanagan and Nearing (1995), as modified to account for CO2 effects on evapotranspiration and K-State´s Ag Engineers Unveil New Irrigation Scheduling Program - 21 Dec 2006 CattleNetwork.com,KanSched2, an updated release of a computer software program that uses evapotranspiration (ET) data, is designed to help monitor root zone water in the soil Researchers use satellite images to track water use - Dec 18, 2006 Las Cruces Sun-News,The team measured the evapotranspiration (ET) level, or the amount of water lost by direct evaporation from soil, pond water and plants. North Texas Cities Adapt Landscaping to Drought - Dec 19, 2006 Lawn & Landscape,Requires evapotranspiration controllers, which turn irrigation systems on only when water is needed and adjust the amount depending on the time of year. Drought (North America - United States: Central - Dec 19, 2006 CO2 Science Magazine,Potential evapotranspiration and the likelihood of future drought. Journal of Geophysical Research 95: 9983-10004. Rosenzweig, C. and Hillel, D. 1993. Arabidopsis thaliana in Hypobaric Environments: Implications for ... - Dec 12, 2006 Astrobiology News (press release),Understanding how hypobaria can affect net photosynthetic (P net) and net evapotranspiration rates of plants is important for the Mars Exploration Program Kenya: Environmental Threat in Kisii As Wetland Resources Decrease - Dec 9, 2006 AllAfrica.com,This is because wetland reclamation directly affects the rate of evapotranspiration, a process that adds water to the atmosphere. This partly explains why What's your order? I'll take a 60-day drought - Dec 8, 2006 High Plains Journal,The TexasET (evapotranspiration) network and website (http://TexasET.tamu.edu) helps users determine the irrigation needs of landscapes and crops. Wular is dying, save it - Dec 6, 2006 GreaterKashmir.com (press release),Aquatic weeds use more water in evapotranspiration than is lost by evaporation from the equivalent area of open water. They inhibit phytoplankton growth, News index | RSS | News Feed Advertisements: Organic Apparel from Patagonia | Insect-repelling clothing |
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