ozone measurement

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• Ozone depletion — Image of the largest Antarctic ozone hole ever recorded (September 2006) Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about 4% per decade in the total volume of ozone in Earth s… …   Wikipedia

• Dobson ozone spectrophotometer — Original Dobson Spectrometer, using photographic plates The Dobson spectrophotometer, also known as Dobsonmeter or Dobson spectrometer, is the earliest instrument used to measure atmospheric ozone. It was invented in 1926 by Gordon Dobson.[1] A… …   Wikipedia

• Dobson unit — (DU)    a unit used in geophysics to measure the ozone in the atmosphere. One Dobson unit represents the amount of atmospheric ozone that would form a uniform layer 0.01 millimeter (10 micrometers) thick at standard temperature (0 °C) and… …   Dictionary of units of measurement

• nanobar — (nb or nbar)    a CGS unit of pressure equal to 10 9 bar or 0.1 millipascal (mPa). The nanobar is frequently used in meteorology to express the partial pressure of atmospheric ozone …   Dictionary of units of measurement

• Harold G. Richter — (5 de marzo de 1925 19 de julio de 2001[1] ) fue un químico estadounidense, que colaboró en el descubrimiento del elemento químico de número atómico 61, prometio, perteneciente a los lantánidos, junto a Jacob A. Marinsky, Charles D. Coryell y… …   Wikipedia Español

• Greenhouse gas — Simple diagram of greenhouse effect. A greenhouse gas (sometimes abbreviated GHG) is a gas in an atmosphere that absorbs and emits radiation within the thermal infrared range. This process is the fundamental cause of the greenhouse effect.[1] …   Wikipedia

• Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium

• Oxygen — This article is about the chemical element and its most stable form, O2 or dioxygen. For other forms of this element, see Allotropes of oxygen. For other uses, see Oxygen (disambiguation). nitrogen ← oxygen → fluorine ↑ O ↓ …   Wikipedia

• Ozoneweb — interpolated map May 2007 URL www.eea.europa.eu/maps/ozone/welcome Type of site International Government Owner European Environment Agency …   Wikipedia

• Atmospheric Chemistry Observational Databases — Over the last two centuries many atmospheric chemical observations have been made from a variety of ground based, airborne, and orbital platforms and deposited in databases. Many of these databases are publicly available. All of the instruments… …   Wikipedia

• climate — /kluy mit/, n. 1. the composite or generally prevailing weather conditions of a region, as temperature, air pressure, humidity, precipitation, sunshine, cloudiness, and winds, throughout the year, averaged over a series of years. 2. a region or… …   Universalium