Results 21 to 30 of about 96,040 (245)

Complexity of downy birch emissions revealed by Vocus proton transfer reaction time-of-flight mass spectrometer

Frontiers in Forests and Global Change, 2022
Biogenic volatile organic compounds (BVOCs) are known to strongly influence the global climate by affecting various atmospheric constituents such as oxidants and aerosols. Among the several BVOCs that are emitted continuously into the atmosphere, studies
Steven Job Thomas, Steven Job Thomas, Haiyan Li, Arnaud P. Praplan, Heidi Hellén, Federico Bianchi   +5 more
doaj   +1 more source

Development of four-dimensional variational assimilation system based on the GRAPES–CUACE adjoint model (GRAPES–CUACE-4D-Var V1.0) and its application in emission inversion [PDF]

Geoscientific Model Development, 2021
In this study, a four-dimensional variational (4D-Var) data assimilation system was developed based on the GRAPES–CUACE (Global/Regional Assimilation and PrEdiction System – CMA Unified Atmospheric Chemistry Environmental Forecasting System) atmospheric ...
C. Wang, C. Wang, X. An, Q. Hou, Z. Sun, Y. Li, J. Li   +6 more
doaj   +1 more source

Sesquiterpenes and oxygenated sesquiterpenes dominate the VOC (C₅–C₂₀) emissions of downy birches [PDF]

Atmospheric Chemistry and Physics, 2021
Biogenic volatile organic compounds (BVOCs) emitted by the forests are known to have strong impacts in the atmosphere. However, lots of missing reactivity is found, especially in the forest air.
H. Hellén, A. P. Praplan, T. Tykkä, A. Helin, S. Schallhart, P. P. Schiestl-Aalto, P. P. Schiestl-Aalto, P. P. Schiestl-Aalto, J. Bäck, J. Bäck, H. Hakola   +10 more
doaj   +1 more source

Measuring atmospheric composition change [PDF]

Atmospheric Environment, 2009
Scientific findings from the last decades have clearly highlighted the need for a more comprehensive approach to atmospheric change processes. In fact, observation of atmospheric composition variables has been an important activity of atmospheric research that has developed instrumental tools (advanced analytical techniques) and platforms (instrumented
Laj P, Klausen, J., Bilde, M., Plaß-Duelmer, C., Pappalardo, G., Clerbaux, C., Baltensperger, U., Hjorth, J., Simpson, D., Reimann, S., Coheur, P.-F., Richter, A., De Mazière, M., Rudich, Y., McFiggans, G., Torseth, K., Wiedensohler, A., Morin, S., Schulz, M., Allan, J.D., Attié, J.-L., Barnes, I., Birmili, W., Cammas, J.P., Dommen, J., Dorn, H.-P., Fowler, D., Fuzzi, S., Glasius, M., Granier, C., Hermann, M., Isaksen, I.S.A., Kinne, S.ac, Koren, I., Madonna, F., Maione, M., Massling, A., Moehler, O., Mona, L., Monks, P.S., Müller, D., Müller, T., Orphal, J., Peuch, V.-H., Stratmann, F., Tanré, D., Tyndall, G., Abo Riziq, A., Van Roozendael, M., Villani, P., Wehner, B., Wex, H., Zardini, A.A.   +104 more
openaire   +9 more sources

Laboratory evaluation of particle-size selectivity of optical low-cost particulate matter sensors [PDF]

Atmospheric Measurement Techniques, 2020
Low-cost particulate matter (PM) sensors have been under investigation as it has been hypothesized that the use of low-cost and easy-to-use sensors could allow cost-efficient extension of the currently sparse measurement coverage.
J. Kuula, T. Mäkelä, M. Aurela, K. Teinilä, S. Varjonen, Ó. González, H. Timonen   +6 more
doaj   +1 more source

Observations of relative humidity effects on aerosol light scattering in the Yangtze River Delta of China [PDF]

Atmospheric Chemistry and Physics, 2015
Scattering of solar radiation by aerosol particles is highly dependent on relative humidity (RH) as hygroscopic particles take up water with increasing RH.
L. Zhang, J. Y. Sun, X. J. Shen, Y. M. Zhang, H. Che, Q. L. Ma, Y. W. Zhang, X. Y. Zhang, J. A. Ogren   +8 more
doaj   +1 more source

Atmospheric composition change: Ecosystems–Atmosphere interactions

Atmospheric Environment, 2009
Ecosystems and the atmosphere: This review describes the state of understanding the processes involved in the exchange of trace gases and aerosols between the earth's surface and the atmosphere. The gases covered include NO, NO2, HONO, HNO3, NH3, SO2, DMS, Biogenic VOC, O-3, CH4, N2O and particles in the size range 1 nm-10 mu m including organic and ...
Fowler, D., Pilegaard, K., Sutton, M.A., Ambus, P., Raivonen, M., Duyzer, J., Simpson, D., Fagerli, H., Fuzzi, S., Schjoerring, J.K., Grainer, C., Neftel, A., Isaksen, I.S.A., Laj, P., Maione, M., Monks, P.S., Burkhardt, J., Daemmgen, U., Neirynck, J., Personne, E., Wichink-Kruit, R., Butterbach-Bahl, K., Flechard, C., Tuovinen, J.P., Coyle, M., Gerosa, G., Loubet, B., Altimir, N., Gruenhage, L., Ammann, C., Cieslik, S., Paoletti, E., Mikkelsen, T.N., Ro-Poulsen, H., Cellier, P., Cape, J.N., Horvath, L., Loreto, F., Niinemets, U., Palmer, P.I., Rinne, J., Misztal, P., Nemitz, E., Nilsson, D., Pryor, S., Gallagher, M.W., Vesala, T., Skiba, U., Brueggemann, N., Zechmeister-Boltenstern, S., Williams, J., O'Dowd, C., Facchini, M.C., de Leeuw, G., Flossman, A., Chaumerliac, N., Erisman, J.W.   +56 more
openaire   +7 more sources

Concentrations and Size Distributions of Particle Lung-deposited Surface Area (LDSA) in an Underground Mine

Aerosol and Air Quality Research, 2021
Ultrafine particles produced by diesel-powered vehicles in underground mines are largely unaccounted for in mass-based air quality metrics. The Lung Deposited Surface Area concentration (LDSA) is an alternative to describe the harmfulness of particles ...
Laura Salo, Topi Rönkkö, Sanna Saarikoski, Kimmo Teinilä, Joel Kuula, Jenni Alanen, Anssi Arffman, Hilkka Timonen, Jorma Keskinen   +8 more
doaj   +1 more source

Remote sensing measurements during PaCE 2022 campaign [PDF]

Earth System Science Data
Continuous ground-based remote sensing measurements were conducted during the Pallas Cloud Experiment (PaCE) 2022 campaign. Remote sensing instruments, including two ceilometers (models CL31 and CL61, Vaisala Oyj), a Doppler cloud radar (model RPG-FMCW ...
S. Tukiainen, T. Siipola, N. Leskinen, E. O'Connor   +3 more
doaj   +1 more source

Improving aerosol interaction with clouds and precipitation in a regional chemical weather modeling system [PDF]

Atmospheric Chemistry and Physics, 2016
A comprehensive aerosol–cloud–precipitation interaction (ACI) scheme has been developed under a China Meteorological Administration (CMA) chemical weather modeling system, GRAPES/CUACE (Global/Regional Assimilation and PrEdiction System, CMA Unified ...
C. Zhou, X. Zhang, S. Gong, Y. Wang, M. Xue   +4 more
doaj   +1 more source