0000000001290088

AUTHOR

Jürgen Helmert

showing 1 related works from this author

On the direct and semidirect effects of Saharan dust over Europe: A modeling study

2007

[1] On the basis of a new regional dust model system, the sensitivity of radiative forcing to dust aerosol properties and the impact on atmospheric dynamics were investigated. Uncertainties in optical properties were related to uncertainties in the complex spectral refractive index of mineral dust. The climatological-based distribution of desert-type aerosol in the radiation scheme of the nonhydrostatic regional model LM was replaced by dust optical properties from spectral refractive indices, derived from in situ measurements, remote sensing, bulk measurements, and laboratory experiments, employing Mie theory. The model computes changes in the solar and terrestrial irradiance from a spatia…

Atmospheric ScienceMeteorologyMie scatteringIrradianceSoil ScienceForcing (mathematics)Aquatic ScienceMineral dustOceanographyAtmospheric sciencesAtmosphereGeochemistry and PetrologyEarth and Planetary Sciences (miscellaneous)Radiative transferAstrophysics::Solar and Stellar AstrophysicsAstrophysics::Galaxy AstrophysicsEarth-Surface ProcessesWater Science and TechnologyEcologyPaleontologyForestryRadiative forcingAerosolGeophysicsSpace and Planetary ScienceEnvironmental scienceAstrophysics::Earth and Planetary AstrophysicsJournal of Geophysical Research: Atmospheres
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