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together with Duration: 19.10.2006 - 01.02.2007 Written examination (Klausur) Date: ? BOSS : Prof. Dr. Gode Gravenhorst Lecturer : Dr. Oleg Panferov e-mail: [email protected] tel.: 3912115 Room: 574 Other questions : Frau M.-L. Baumann tel.: 393683 Room: 582 More information: www.bioklimatologie.uni-goettingen.gwdg.de Go to www.bioklimatologie.uni-goettingen.gwdg.de Where can I get a MANUSCRIPT? Service Glenn R. McGregor; Simon Nieuwolt, 1998, Tropical climatology: an introduction to the climates of the low latitudes. 339 pp, ISBN 0-471-96611-8 J.O. Ayoade, 1983, Introduction to climatology for the tropics, 258 pp., ISBN 0-47110407-8 G. C. Asnani. , 1993, Tropical meteorology, Pune : Indian Institute of Tropical Meteorology, What‘s CLIMATE? What‘s WEATHER? Weather comprises the short-term (hours, days) characteristic of atmospheric processes at a given place. It may change from hour to hour, from day to day. Climate represents the long-term (years) properties of the atmosphere at a given place that means averages, variations, extremes and their frequency distributions. “Witterung” (special German word - there is no English analogue) characterises the atmospheric condition for period of some weeks within a season. What are the climate characteristics? 1. Insolation - incoming solar energy 2. Air temperature 3. Air humidity 4. Precipitation 5. Wind 6. Atmospheric composition 7. Soil Climate ? Plants Photosynthesis 6CO2 + 6H2O + Light energy C6H12O6 + 6O2 nano = 10-9 Ultraviolet (UV) 220 - 3000 nm Visible Infrared (IR) Microwaves X-rays gamma-rays Electromagnetic Spectrum of Sun Radio waves Photosynthetically Active Radiation PAR 400-700 nm Not Energy, but Number of Photons! Avogadro‘s Constant NA = 6.022*1023 particles/mol Micromol = μmol = mol * Microeinstein μE -6 10 = Why different climates? N E W N S S SUN N SUN 24 Hours Distance difference 3% Radiation Difference 6% Plane of the ECLIPTIC 100 000 years period = 23° 27‘ = 23.45° 23.5° Plane of the ECLIPTIC Sun Height Sun Altitude Intensity = Energy per Area I = Watt per square meter = W/m2 100 Watt 100 Watt 1 m2 I1 = 100 Watt / 1m2 = 100 W/m2 I2 = 100 Watt / 1.41m2 = 70 W/m2 S1 =1 m2 S2 =1.41 m2 S2 =S1 / SIN S2 =1 m2 / 0.70 Solar Constant 1370 W/m2 Average available insolation at the Earth's surface: July 1983-1990. Average available insolation at the Earth's surface: January 1984-1991. Regions between tropical circles or TROPICS (between latitudes 23.5°N and 23.5°S) where the Sun is in Zenit at least once a year TOPICS 1. Content and structure of the atmosphere 2. Energy distribution 3. Temperature 4. Pressure 5. Wind 6. Local and regional circulation 7. Tropical storms, Tornadoes, El-Niño 8. Air masses 9. Climates