Title: TIMED (Thermosphere, Ionosphere, Mesosphere, Energetics and Dynamics)Mission at HAO/NCAR

URL: http://timed.hao.ucar.edu/

Description: The Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics (TIMED) satellite is a NASA Heliophysics mission to study the mesosphere and lower thermosphere from about 60 to 180 km altitude, and understand how solar variability and lower atmosphere processes combine to make this one of the most dynamic and variable regions of the terrestrial atmosphere.

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Subject:   Atmosphere, Lower,  Solar-terrestrial relations,  Atmosphere--Dynamics ,  Solar variability,  Atmosphere--Research

URL: http://topse.acd.ucar.edu/

Description: The TOPSE investigation combined model studies and simulations with a set of chemical and photochemical measurements taken over the critical winter-spring transition in the northern mid-to-high latitude troposphere. The overall goal of the experiment was to investigate the chemical and dynamic evolution of tropospheric chemical composition over mid- to high-latitude continental North America during the winter/spring transition; a particular emphasis was placed on the springtime ozone maximum in the troposphere. As the experiment progressed additional effort was used to investigate dramatic ozone depletion events found over large regions of the Arctic surface layer. The Tropospheric Ozone Production about the Spring Equinox took place in 2000 in Colorado, Greenland, and Manitoba.

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Subject:   Photochemistry--Observations,  Atmospheric Chemistry,  Atmosphere--Dynamics ,  Atmosphere--Research,  Air quality

Title: CESM Whole Atmosphere Model Working Group

URL: http://waccm.acd.ucar.edu/

Description: The Whole Atmosphere Community Climate Model (WACCM) is a comprehensive numerical model, spanning the range of altitude from the Earth's surface to the thermosphere. The development of WACCM is an inter-divisional collaboration that unifies certain aspects of the upper atmospheric modeling of HAO, the middle atmosphere modeling of ACD, and the tropospheric modeling of CGD, using the NCAR Community Earth System Model (CESM) as a common numerical framework.

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Subject:   Atmosphere--Dynamics ,  Atmosphere--Research,  Atmospheric chemistry,  Climatology--Mathematical models,  Communication in science