Results 61 to 70 of about 3,777,069 (383)
Terpenoid and carbonyl emissions from Norway spruce in Finland during the growing season [PDF]
Atmospheric Chemistry and Physics, 2017 We present spring and summer volatile organic compound (VOC) emission rate measurements from Norway spruce (Picea abies L. Karst) growing in a boreal forest in southern Finland.
H. Hakola +7 more
doaj +1 more source
An extensive data set for in situ microphysical characterization of low-level clouds in a Finnish sub-Arctic site [PDF]
Earth System Science Data, 2022 Continuous, semi-long-term, ground-based in situ cloud measurements were conducted during eight Pallas Cloud Experiments (PaCEs) held in autumn between 2004 and 2019.
K. M. Doulgeris +5 more
doaj +1 more source
A DETECTION OF WATER IN THE TRANSMISSION SPECTRUM OF THE HOT JUPITER WASP-12b AND IMPLICATIONS FOR ITS ATMOSPHERIC COMPOSITION [PDF]
, 2015 Detailed characterization of exoplanets has begun to yield measurements of their atmospheric properties that constrain the planets’ origins and evolution.
L. Kreidberg +10 more
semanticscholar +1 more source
Remote Sensing, 2022 An assessment and verification of the Langley calibration method of the Sun photometer at Mt Foyeding (MFYD) Observatory in Beijing was performed. We explored whether the Langley plot calibration is practicable for this mountainous site by analyzing the ...
Yu Zheng +12 more
doaj +1 more source
The Chemical Composition of the Atmosphere of Venus [PDF]
Symposium - International Astronomical Union, 1971 The chemical composition sensors on the Venera-4, -5, and -6 spacecraft are described. The mixing ratio by volume of carbon dioxide is determined to be 97 (+3, −4)%; nitrogen, less than 2%, oxygen, less than about 0.1%; and water vapor at the 25 °C temperature level, on the order of 10 mg/l, an amount large enough to imply that the clouds of Venus are ...
O. M. Kalinkina +4 more
openaire +2 more sources
Methane exchange at the peatland forest floor – automatic chamber system exposes the dynamics of small fluxes [PDF]
Biogeosciences, 2017 We measured methane (CH4) exchange rates with automatic chambers at the forest floor of a nutrient-rich drained peatland in 2011–2013. The fen, located in southern Finland, was drained for forestry in 1969 and the tree stand is now a mixture of Scots ...
M. Korkiakoski +9 more
doaj +1 more source
Geoscientific Model Development, 2018 . A new chemical mechanism for the oxidation of biogenic volatile organic compounds (BVOCs) is presented and implemented in the Model of Atmospheric composition at Global and Regional scales using Inversion Techniques for Trace gas Emissions (MAGRITTE v1.
J. Müller, T. Stavrakou, J. Peeters
semanticscholar +1 more source
Atmospheric conditions and composition that influence PM2.5 oxidative potential in Beijing, China
Atmospheric Chemistry and Physics, 2020 Epidemiological studies have consistently linked exposure to PM2.5 with adverse health effects. The oxidative potential (OP) of aerosol particles has been widely suggested as a measure of their potential toxicity.
Steven J. Campbell +22 more
semanticscholar +1 more source
A Lower Limit of Atmospheric Pressure on Early Mars Inferred from Nitrogen and Argon Isotopic Compositions [PDF]
, 2017 We examine the history of the loss and replenishment of the Martian atmosphere using elemental and isotopic compositions of nitrogen and noble gases. The evolution of the atmosphere is calculated by taking into consideration various processes: impact erosion and replenishment by asteroids and comets, atmospheric escape induced by solar radiation and ...
arxiv +1 more source
Compositions of Hot Super-Earth Atmospheres: exploring Kepler Candidates [PDF]
, 2011 This paper outlines a simple approach to evaluate the atmospheric composition of hot rocky planets by assuming different types of planetary composition and using corresponding model calculations. To explore hot atmospheres above 1000 K, we model the vaporization of silicate magma and estimate the range of atmospheric compositions according to the ...
arxiv +1 more source