ATM OCN (Meteorology) 100
WATER and the HYDROLOGICAL CYCLE
Lecture # 7 Scheduled for:
23 JUN 2004 (W)
Recommended Readings from Moran (2002):
pages 109-121; 132-135.
Today's Lecture Objectives:
- To identify and rank according to relative size the major water reservoirs on Planet Earth.
- To describe the movement of water through the hydrological cycle, summarizing the various phase change processes.
- To describe the meteorological and climatological importance of the hydrological cycle.
- To explain why water has some unique chemical and physical properties.
- To identify the utilization of energy during the various phase change processes of water.
- To describe the saturation process and how the amount of atmospheric water vapor at saturation depends upon temperature.
- To identify the various instruments used to measure atmospheric water vapor.
- To explain how the water vapor content of air is quantified and define the following moisture parameters
- dewpoint temperature
- wet bulb temperature
- vapor pressure
- mixing ratio
- relative humidity
- To perform simple calculations involving moisture parameters.
- To explain the temperature dependency of relative humidity.
- Historical Perspective of the Hydrologic Cycle
B. IMPORTANCE OF THE HYDROLOGIC CYCLE
- Meteorological Significance
- Contribution to the planetary energy budget
- Factor in weather systems
- Biological Significance
- Human Significance
C. ASSESSING THE HYDROLOGIC CYCLE
- Mass Budgets
- Total Water Budget of Planet Earth
- The Major Reservoirs of Water
- Recycling Processes between Reservoirs
- Measurement Techniques
D. WATER - A WONDER
- Molecular Structure of Water (H2O)
- Chemical Properties of H2O
- Physical Properties of H2O
E. WATER VAPOR
- Humidity (Atmospheric vapor) Considerations
- Concept of Saturation
- Water Vapor Variables
- Humidity Measurements and Instruments
- Climatology of Atmospheric Humidity (Water vapor)
Links to Other References:
Produced by Edward J. Hopkins, Ph.D.
Department of Atmospheric and Oceanic Sciences
University of Wisconsin-Madison Madison, WI 53706
Latest revision: 7 July 2004 (0415 UTC)