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A radiosonde and a method for atmospheric measurements performed at an elevated temperature

A radiosonde, high temperature technology, used in weather forecasting, instrumentation, meteorology, etc., to solve problems such as inaccurate heights and undetectable cloud structures

Inactive Publication Date: 2015-12-30
VAISALA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Firstly, the detected cloud heights are not accurate, and secondly, the thinnest cloud structures may not even be detected because humidity or the minimum and maximum levels of clouds are not detected by the measurements

Method used

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  • A radiosonde and a method for atmospheric measurements performed at an elevated temperature
  • A radiosonde and a method for atmospheric measurements performed at an elevated temperature
  • A radiosonde and a method for atmospheric measurements performed at an elevated temperature

Examples

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Embodiment Construction

[0044] To summarize, a typical embodiment of the invention is a humidity sensor 11 , usually capacitive, with an integrated temperature measuring element 12 and heating element 13 . The temperature of the humidity sensor 11 is kept a few degrees Celsius above the ambient temperature, which is measured independently by another temperature sensor 15 of the radiosonde 1 . Heating is controlled using a set temperature difference or a constant power. The relative humidity is calculated using the temperature information of the ambient air according to the following known formula.

[0045] RH a = RH s [ ew s atT s ew a atT a ]

[0046] in,

[0047] R...

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Abstract

The invention relates to a method and a radiosonde (1). According to the method at least temperature and relative humidity of the atmosphere are measured by a radiosonde (1). In accordance with the invention the humidity measurement is performed continuously in an elevated temperature in order to make the measurement faster and both the elevated temperature and ambient air temperature are measured simultaneously and based on these values relative humidity is determined and the humidity sensing elements are positioned on a planar substrate.

Description

technical field [0001] The invention relates to a method in a radiosonde according to the preamble of claim 1 . [0002] The invention also relates to a radiosonde. Background technique [0003] A radiosonde (also known as an echosounder) is a weather observation device attached to a balloon that measures atmospheric parameters and usually transmits the measurements to a base station on the ground. Measured or calculated parameters typically include atmospheric temperature, pressure and humidity at different altitudes, as well as wind speed and direction. [0004] Balloons filled with helium or hydrogen rise through the atmosphere carrying radiosondes. As the balloon rises through the atmosphere, the pressure decreases, causing the balloon to inflate. Eventually, the balloon will burst, ending the ascent. [0005] State-of-the-art radiosondes communicate by radio with a computer that stores all variables in real time. [0006] Modern radiosondes can use a variety of mec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01W1/08G01W1/10
CPCG01W1/08Y02A90/10
Inventor 托米·萨洛埃罗·希尔图宁尤卡·利帕宁马库斯·图鲁宁
Owner VAISALA
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