Search results for "Messungen"

showing 3 items of 3 documents

Wasserstand und Eisbedeckung der Düna bei Riga

1887

Atsevišķs novilkums no: "Bericht über die Vorarbeiten für die systematische Entwässerung und Reinigung der Stadt Riga".

Eisbedeekung - DaugavaWasserstand - DaugavaMeteorologie - Lettland:NATURAL SCIENCES::Earth sciences::Atmosphere and hydrosphere sciences::Meteorology [Research Subject Categories]Klima - Riga (Lettland)Hidrauliskie mērījumi - DaugavaIce on rivers - DaugavaWater levels - DaugavaHydraulische Messungen - DaugavaMeteoroloģija - LatvijaKlimats - Rīga (Latvija)Ledus upēs - DaugavaŪdens līmeņi - DaugavaEisflüsse - Daugava
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Airborne Measurements of Contrail Ice Properties—Dependence on Temperature and Humidity

2021

The largest share in the climate impact of aviation results from cirrus clouds. Here, the dependence of microphysical contrail ice properties and extinction on temperature and humidity is investigated. Contrail measurements were performed at various altitudes during the 2018 ECLIF II/NDMAX campaign with the NASA DC-8 chasing the DLR A320. Ice number concentrations and contrail extinction coefficients are largest at altitudes near 9.5 km, typical for short- and medium-range air traffic. At higher altitudes near 11.5 km, low ambient water vapor concentrations lead to smaller contrail particle sizes and lower extinction coefficients. In addition, contrails were detected below 8.2 km near the S…

ExtinktionLead (sea ice)HumidityAtmospheric sciencesGeophysicsAltitudeSchmidt-ApplemanExtinction (optical mineralogy)Threshold temperatureGeneral Earth and Planetary SciencesEnvironmental scienceParticleCirrusMessungenLaserspektrometrieSoot particlesKondensstreifenGeophysical Research Letters
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Beiträge zur Steigerung der Genauigkeit bei astronomischen Messungen

1937

Sonderabdruck aus den Verhandlungen der neunten Tagung der Baltischen geodätischen Kommission

Observatorijas:NATURAL SCIENCES::Physics::Astronomy and astrophysics::Astronomy [Research Subject Categories]Astronomiskie novērojumiObservatoriesAstronomical researchAstronomischen MessungenSternbeobachtungenAstronomischen BeobachtungenAstronomieAstronomija
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