Click to edit Master title style Click to edit Master title style

More documents

Recommendations

Info

The “Climate - Weather” ConnectionClick to edit Master title styleUnderstanding the links between “climate” and “weather”(precipitation) variability is vital to identifying the causes ofdroughts.• Click to edit Master text styles• To understand droughts, need to understand dominant regional andseasonal • Second precipitation level mechanisms (synoptic-scale, convective,orographic --)• Third level• As droughts evolve, they may have feedback effects on T andprecip., both locally and non-locally, that effect the weather:• Fourth level• Fifth level- T: higher maxs., larger diurnal cycles -- P: “In times of drought, all signs of rain fail.”WMODrought and Desertification Workshop, Alanya, 14-16 November 20062TSMS
Predicting Drought at regional baseClick to edit Master title style meteorological drought is never the result of a single cause. It is the result of many causes, often synergisticin nature. too many variables:- air-sea interactions- soil moisture and land surface processes,- topography,• Click to edit Master text styles- the accumulated influence of dynamically unstable synoptic weather systems at the global scale.- differs by region, season, and climatic regime• Second levelThe Big Picture: Global Weather Patterns interacting systems or teleconnections El Niño/Southern Oscillation (ENSO) and North Atlantic Oscillation (NAO)• Third levelThe Little Picture: High Pressure• Fourth level The immediate cause of drought is the predominant sinking motion of air (subsidence) that results incompressional warming or high pressure,- inhibits cloud formation• Fifth level- results in lower relative humidity and less precipitation. Regions under the influence of semipermanent highpressure are usually deserts, such as the Sahara. Most climatic regions experience varying degrees of dominance by high pressure, often depending on theseason. Prolonged droughts occur when large-scale anomalies in atmospheric circulation patterns persist for monthsor seasons (or longer).WMODrought and Desertification Workshop, Alanya, 14-16 November 20063TSMS
Page 1: Click to edit Master title styleCAU
Page 6 and 7: c. Time scalesClick to edit Master
Page 8 and 9: Click to edit Master title style•
Page 14 and 15: What about the Future?Click to edit
Page 18 and 19: mPMAJOR AIR MASSES THAT AFFECT CLIM
Page 20 and 21: TOPOGRAPHY OF TURKEYClick to edit M
Page 24: RELATIONSHIP BETWEEN ANNUAL PRECIPI

Click to edit Master title style Click to edit Master title style

Create successful ePaper yourself

Delete template?

Save as template?