We discuss our experimental progress toward energyefficient electrochemical CO2 capture from the atmosphere. First we discuss the latest results from an ongoing project that uses a modified-fuel-cell-based approach for CO2 concentration [1]. Using this approach, we have demonstrated CO2 capture from atmospheric concentrations with an energy consumption of less than 400 kJ/mol(CO2). We also disc...

FlOg LeI' tl J. TIzI.nl, FEllOW SPIE lJIiVtl>ilY of Stuttgart trotiMe of Applied Optics PIa~_aIdring 9 ~~9Sruttgart,Genmany Abstract. The image quality of airborne photographs is influenced by the atmosphere. Several factors affect the atmosphere, such as temperature, pressure. humidity, and wind speed. Furthermore, these atmospheric influences Bre dependent on the flight altitude. The MTF of t...

Near-infrared measurements of the occultation of star P445.3 by Pluto on 2007 March 18 reveal that Pluto’s upper atmosphere (∼200–400 km altitude) is unexpectedly dynamic. At a wavelength of 1.6 μm, numerous vertical fluctuations (8–20 km) of density are detected with unprecedented signal-to-noise ratio. These fluctuations are achromatic, nearly limb-aligned, and fully resolved along a ∼1000 km...

1. introduction forest fire is considered as a natural disaster and a major potential threat in many parts of the world. it also has a huge impact on the form and compounds of different species and the spatial pattern of plant coverage. fires in forests and pastures are one of the world's most important issues, not only environmentally, but also from an economic and social aspect. forest fires ...

Earth-based stellar occultations probe the temperature, pressure, and numberdensity profiles of planetary atmospheres in the microbar range with a vertical resolution of a few kilometers. Depending on the occultation data available for a given body and other information, the technique also allows determination of local density variations, extinction by aerosols and molecules, rotation period an...

We present a synthesis of physical effects influencing the observed lightcurve of an extrasolar giant planet (EGP) transiting its host star. The synthesis includes a treatment of Rayleigh scattering , cloud scattering, refraction, and molecular absorption of starlight in the EGP atmosphere. Of these effects, molecular absorption dominates in determining the transit-derived radius R, for planeta...

We describe the Cool Opacity-sampling Dynamic EXtended (CODEX) atmosphere models of Mira variable stars, and examine in detail the physical and numerical approximations that go in-to the model creation. The CODEX atmospheric models are obtained by computing the temperature and the chemical and radiative states of the atmospheric layers, assuming gas pressure and velocity profiles from Mira puls...