PPT-Deserts Adiabatic Warming and Cooling

Deserts Adiabatic Warming and Cooling Warm moist air masses forced up and over mountains experience decreasing atmospheric pressure and as a result expand This process causes the expanding air mass to release a portion of its latent heat resulting in a decrease in air temperature This is called adiabatic cooling Depending on the height to which the air is forced the air mass temperature may drop below the dew point resulting in the formation of water droplets and precipitation in the form of rain or snow As a result when the air mass reaches the summit it is cold and dry Crossing the summit the air mass descends and compresses This produces a corresponding increase in atmospheric pressure and as descent continues the compressing air mass begin to warm This is a called adiabatic warming However because the moisture was released during the cooling stage the descending air mass is warm and dry If sufficient moisture is removed the descending air mass could be dry enough to create a rain shadow effect where precipitation is much lower than surrounding areas In some cases a rain shadow desert can form. Adiabatic air cooling . additive. systems. 1. Typical areas we serve:. Air cooled chillers . Refrigeration. Dry Coolers . Air intake. Unitary. 2. Typical problems we solve:. Increase in the electricity bill. intraseaonal. and . interdecadal. time scales. Steven Feldstein. The Pennsylvania State University. September 11, 2012. Collaborators: . Sukyoung. Lee, . Tingting. . Gong, Nat Johnson. ,, . Changhyun. By Elisa Miller. Keystone College. Deserts. Types of Deserts:. Hot and . Dry. Cold Deserts. Gobi Desert in Asia. Desert . of . Antarctica. Locations. Cover 20% of the Earth’s land mass. Latitudes: . Ned Bair . US Army Corps of Engineers Cold Regions Research and Engineering Laboratory. Earth Research Institute, UC - Santa Barbara. 1. Heat transfer. Radiation. Energy transfer via photons. Sensible. Created and presented by Brandi graham. What is global warming and why is it happening? . Global warming is the term used to describe a gradual increase in the average temperature of the Earth's atmosphere and its oceans, a change that is believed to be permanently changing the Earth's climate. and other adventures in chemistry-climate interactions. Loretta J. Mickley. Pattanun. . Achakulwisut. , . Becky. Alexander, Tom . Breider. , . Bryan . Duncan. , . Rynda. . Hudman. , Daniel Jacob. ,. Lori Kowaleski-Jones. Department of Family and Consumer Studies. University of Utah. Food Desert. Broadly conceptualized . as limited access to affordable and nutritious foods, particularly in low income areas. HOT . or . COLD. . But they are all very . DRY. . All deserts have more evaporation then rainfall.. Deserts cover 20-35% of the Earth’s land surface, and 25% of the world’s people.. ANTARCTICA is actually a large desert. Department of Family and Consumer Studies. University of Utah. Food Desert. Broadly conceptualized . as limited access to affordable and nutritious foods, particularly in low income areas. Food . Environment . You must calibrate the thermometers to ensure you collect accurate results.. You shall practise your technique with cold copper coins and boiling water. You shall then repeat the method with stearic acid and paraffin wax. . CLIMATE FROM A GEOLOGIC PERSPECTIVE 1 GLOBAL WARMING/COOLING CYCLES FROM A GEOLOGIC PERSPECTIVE (meaning a very long time horizon) By Rocky Romero Rev 3 CLIMATE FROM A GEOLOGIC PERSPECTIVE 2 I’ve structured the explanation of Climate Change in three parts… Gas Laws The atmosphere is made up of gases so we need to know the basic laws of how gases behave Gas laws describe the relationships between the key parameters describing the behavior of gases Temperature (T) Deserts Adiabatic Warming and Cooling Warm, moist air masses forced up and over mountains experience decreasing atmospheric pressure and, as a result, expand. This process causes the expanding air mass to release a portion of its latent heat, resulting in a decrease in air temperature. This is called adiabatic cooling. Depending on the height to which the air is forced the air mass temperature may drop below the dew point, resulting in the formation of water droplets and precipitation in the form of rain or snow. As a result, when the air mass reaches the summit, it is cold and dry. Crossing the summit, the air mass descends and compresses. This produces a corresponding increase in atmospheric pressure and, as descent continues, the compressing air mass begin to warm. This is a called adiabatic warming. However, because the moisture was released during the cooling stage, the descending air mass is warm and dry. If sufficient moisture is removed the descending air mass could be dry enough to create a rain shadow effect where precipitation is much lower than surrounding areas. In some cases a rain shadow desert can form. Global Hydrological Cycle. Thermodynamic properties of water. Humidity: Water Vapor in the Air. Vapor pressure . Absolute humidity. The mixing ratio . Specific humidity. Relative humidity . Relative Humidity.