Glossary of terms

Cloudburst

Definition

A cloudburst is a sudden and extreme rainfall event characterized by an exceptionally high intensity of precipitation over a relatively short period, typically lasting less than a few hours.

Main features of a cloudburst

1. Intensity: Cloudbursts involve extremely heavy rainfall, often exceeding 100 mm (4 inches) per hour.

2. Short duration: These events typically last for a brief period, usually between 15 minutes to a few hours.

3. Localized occurrence: Cloudbursts are often confined to a small geographical area, sometimes as small as a few square kilometers.

4. Rapid accumulation: The sudden and intense nature of the rainfall leads to quick accumulation of water on the ground.

5. Associated with convective clouds: Cloudbursts are usually associated with cumulonimbus clouds and strong updrafts.

6. Potential for flash flooding: The rapid accumulation of water can lead to sudden and severe flash floods.

7. Mountainous regions: Cloudbursts are more common in mountainous areas due to orographic lifting of moist air.

Scope of cloudbursts

1. Geographical distribution: Cloudbursts can occur in various parts of the world but are more frequent in tropical and subtropical regions, especially in mountainous areas.

2. Climate change impact: The frequency and intensity of cloudbursts may be affected by climate change, potentially leading to more extreme events.

3. Disaster management: Cloudbursts pose significant challenges for disaster preparedness and management due to their sudden nature and potential for severe damage.

4. Hydrological implications: These events can have significant impacts on local hydrology, including rapid changes in river levels and potential for landslides.

5. Ecological effects: Cloudbursts can cause soil erosion, damage vegetation, and disrupt local ecosystems.

6. Socio-economic impacts: These events can lead to loss of life, property damage, and disruption of infrastructure and economic activities.

7. Scientific research: Cloudbursts are an important area of study in meteorology, hydrology, and climate science to better understand and predict these extreme weather events.

8. Urban planning: The occurrence of cloudbursts influences urban drainage system design and flood management strategies in vulnerable areas.

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