Publication

Analysis of the variation of the 0°C isothermal altitude during intense rainfall events

Anton Schleiss, Bettina Schaefli
2017
Posters

Abstract

The analysis aims at analysing the evolution of the 0°C isothermal altitude during intense rainfall events. The following steps are followed: • The rainfall events of around 100 meteorological stations measuring at hourly time step are considered. • Two meteorological sounding stations launching two weather balloons per day are considered. • The variation of the 0°C is analysed depending on the rainfall event duration. • The analysis is carried out distinguishing between winter (December-February) and summer (June-August).

Official source

https://infoscience.epfl.ch/entities/publication/0a7e99d8-13d8-45dc-abd3-a001148acfa5

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Anton Schleiss, Bettina Schaefli
2017
Posters

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/0a7e99d8-13d8-45dc-abd3-a001148acfa5

About this result

Related concepts (17)

Weather balloon

A weather balloon, also known as sounding balloon, is a balloon (specifically a type of high-altitude balloon) that carries instruments aloft to send back information on atmospheric pressure, temperature, humidity and wind speed by means of a small, expendable measuring device called a radiosonde. To obtain wind data, they can be tracked by radar, radio direction finding, or navigation systems (such as the satellite-based Global Positioning System, GPS). Balloons meant to stay at a constant altitude for long periods of time are known as transosondes.

Rain

Rain is water droplets that have condensed from atmospheric water vapor and then fall under gravity. Rain is a major component of the water cycle and is responsible for depositing most of the fresh water on the Earth. It provides water for hydroelectric power plants, crop irrigation, and suitable conditions for many types of ecosystems. The major cause of rain production is moisture moving along three-dimensional zones of temperature and moisture contrasts known as weather fronts.

Surface weather observation

Surface weather observations are the fundamental data used for safety as well as climatological reasons to forecast weather and issue warnings worldwide. They can be taken manually, by a weather observer, by computer through the use of automated weather stations, or in a hybrid scheme using weather observers to augment the otherwise automated weather station. The ICAO defines the International Standard Atmosphere (ISA), which is the model of the standard variation of pressure, temperature, density, and viscosity with altitude in the Earth's atmosphere, and is used to reduce a station pressure to sea level pressure.