![]() ![]() They are calculated on the basis of the microphysical data (size distribution and spectral refractive index) under the assumption of spherical particles in case of aerosols and cloud droplets and assuming hexagonal columns in case of cirrus clouds. Data are given for up to 61 wavelengths between 0.25 and 40 μm and up to eight values of the relative humidity. The software package also allows calculation of derived optical properties like mass extinction coefficients and Ångström coefficients. Real aerosol in the atmosphere always is a mixture of different components. ![]() Thus, in OPAC it is made possible to get optical properties of any mixtures of the basic components and to calculate optical depths on the base of exponential aerosol height profiles. Typical mixtures of aerosol components as well as typical height profiles are proposed as default values, but mixtures and profiles for the description of individual cases may also be achieved simply.The roughly 2,000 delegates to the congress had just cast ballots for the party’s prestigious Central Committee. Hu - who appeared reluctant to go - out of Beijing’s Great Hall of the People. Hu, 79, suffering from poor health, as Chinese state media would later report? Or was he being purged in a dramatic show by China’s current leader, Xi Jinping, for the world to see? The moment, captured on video by journalists who had been allowed into the hall minutes earlier, prompted questions and wild speculation. “This was an astonishing episode - even during the Mao period, you didn’t see a dramatic disruption of the congress like this,” said Victor Shih, a specialist in Chinese politics at the University of California at San Diego.
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