Publication

Dipole moments of highly vibrationally excited water

Thomas Rizzo, Andrea Callegari, Patrice Theulé
2002
Journal Articles

Abstract

The intensity of water absorption in the region of the solar spectrum plays a dominant role in atmospheric energy balance and hence strongly influences climate. Significant controversy exists over how to model this absorption accurately. We report dipole moment measurements of highly vibrationally excited water, which provide stringent tests of intensities determined by other means. Our measurements and accompanying calculations suggest that the best currently available potential and dipole surfaces do not accurately model intensities in the optical spectrum of water.

Official source

https://infoscience.epfl.ch/entities/publication/85b869b8-3728-4599-b9a6-234ff96ce866

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Thomas Rizzo, Andrea Callegari, Patrice Theulé
2002
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/85b869b8-3728-4599-b9a6-234ff96ce866

About this result

Related concepts (32)

Two-photon absorption

In atomic physics, two-photon absorption (TPA or 2PA), also called two-photon excitation or non-linear absorption, is the simultaneous absorption of two photons of identical or different frequencies in order to excite a molecule from one state (usually the ground state) to a higher energy, most commonly an excited electronic state. Absorption of two photons with different frequencies is called non-degenerate two-photon absorption.

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Water scarcity (closely related to water stress or water crisis) is the lack of fresh water resources to meet the standard water demand. There are two types of water scarcity namely physical and economic water scarcity. Physical water scarcity is where there is not enough water to meet all demands, including that needed for ecosystems to function. Arid areas for example Central and West Asia, and North Africa often experience physical water scarcity.

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Water resources are natural resources of water that are potentially useful for humans, for example as a source of drinking water supply or irrigation water. 97% of the water on Earth is salt water and only three percent is fresh water; slightly over two-thirds of this is frozen in glaciers and polar ice caps. The remaining unfrozen freshwater is found mainly as groundwater, with only a small fraction present above ground or in the air. Natural sources of fresh water include surface water, under river flow, groundwater and frozen water.

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Dipole moments of highly vibrationally excited water

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