Chapter 15.1

Chapter 15.1 - Chapter 15.1 Overview of Earth's Deserts I.a...

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Chapter 15.1 Overview of Earth's Deserts I.a. Desert Climates I.a.i. Spatial distribution of dry lands related to three climate settings: I.a.i.1. Areas dominated by subtropical high-pressure cells (between 15-35°) I.a.i.1. Rain shadow areas on the leeward side of mountain ranges I.a.i.1. Areas at great distance from moisture-bearing air masses, such as central Asia I.a.i. Typical desert water balance includes high potential evapotranspiration demand, low precipitation supply, and prolonged summer water deficits I.a. Desert Fluvial Processes I.a.i. Types of flow of rivers and streams in deserts: I.a.i.1. Perennial streams : flow all year, fed by combination of snowmelt, rainfall, or groundwater I.a.i.2. Ephemeral streams : flow only after precipitation events and are not connected to groundwater systems I.a.i.3. Intermittent streams : flow for several weeks or months each year and may have some groundwater inputs I.a.i. Characterized by intermittent running water with hard, poorly vegetated surfaces of thing/immature soils yielding high runoff during rainstorms I.a.ii. Flash Flood
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Chapter 15.1 - Chapter 15.1 Overview of Earth's Deserts I.a...

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