Zobrazeno 1 - 10
of 2 230
pro vyhledávání: '"A. Turnipseed"'
Leaf phenology as one important driver of seasonal changes in isoprene emissions in central Amazonia
Autor:
E. G. Alves, J. Tóta, A. Turnipseed, A. B. Guenther, J. O. W. Vega Bustillos, R. A. Santana, G. G. Cirino, J. V. Tavares, A. P. Lopes, B. W. Nelson, R. A. de Souza, D. Gu, T. Stavrakou, D. K. Adams, J. Wu, S. Saleska, A. O. Manzi
Publikováno v:
Biogeosciences, Vol 15, Pp 4019-4032 (2018)
Isoprene fluxes vary seasonally with changes in environmental factors (e.g., solar radiation and temperature) and biological factors (e.g., leaf phenology). However, our understanding of the seasonal patterns of isoprene fluxes and the associated
Externí odkaz:
https://doaj.org/article/f9dafc79ef1443d79319af2cd379d3a9
Autor:
L. Zhou, R. Gierens, A. Sogachev, D. Mogensen, J. Ortega, J. N. Smith, P. C. Harley, A. J. Prenni, E. J. T. Levin, A. Turnipseed, A. Rusanen, S. Smolander, A. B. Guenther, M. Kulmala, T. Karl, M. Boy
Publikováno v:
Atmospheric Chemistry and Physics, Vol 15, Iss 15, Pp 8643-8656 (2015)
New particle formation (NPF) is an important atmospheric phenomenon. During an NPF event, particles first form by nucleation and then grow further in size. The growth step is crucial because it controls the number of particles that can become cloud c
Externí odkaz:
https://doaj.org/article/edf67b6abc5e46748d90d5def383eca3
Autor:
Y. Y. Cui, A. Hodzic, J. N. Smith, J. Ortega, J. Brioude, H. Matsui, E. J. T. Levin, A. Turnipseed, P. Winkler, B. de Foy
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 20, Pp 11011-11029 (2014)
Formation and growth of ultrafine particles is crudely represented in chemistry-climate models, contributing to uncertainties in aerosol composition, size distribution, and aerosol effects on cloud condensation nuclei (CCN) concentrations. Measuremen
Externí odkaz:
https://doaj.org/article/02af959e18694560869020105d909730
Autor:
J. P. Greenberg, J. Peñuelas, A. Guenther, R. Seco, A. Turnipseed, X. Jiang, I. Filella, M. Estiarte, J. Sardans, R. Ogaya, J. Llusia, F. Rapparini
Publikováno v:
Atmospheric Measurement Techniques, Vol 7, Iss 7, Pp 2263-2271 (2014)
Landscape-scale fluxes of biogenic gases were surveyed by deploying a 100 m Teflon tube attached to a tethered balloon as a sampling inlet for a fast-response proton-transfer-reaction mass spectrometer (PTRMS). Along with meteorological instruments d
Externí odkaz:
https://doaj.org/article/d2dbb72d696b4f309e60833425950979
Autor:
J. Ortega, A. Turnipseed, A. B. Guenther, T. G. Karl, D. A. Day, D. Gochis, J. A. Huffman, A. J. Prenni, E. J. T. Levin, S. M. Kreidenweis, P. J. DeMott, Y. Tobo, E. G. Patton, A. Hodzic, Y. Y. Cui, P. C. Harley, R. S. Hornbrook, E. C. Apel, R. K. Monson, A. S. D. Eller, J. P. Greenberg, M. C. Barth, P. Campuzano-Jost, B. B. Palm, J. L. Jimenez, A. C. Aiken, M. K. Dubey, C. Geron, J. Offenberg, M. G. Ryan, P. J. Fornwalt, S. C. Pryor, F. N. Keutsch, J. P. DiGangi, A. W. H. Chan, A. H. Goldstein, G. M. Wolfe, S. Kim, L. Kaser, R. Schnitzhofer, A. Hansel, C. A. Cantrell, R. L. Mauldin, J. N. Smith
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 12, Pp 6345-6367 (2014)
The Bio-hydro-atmosphere interactions of Energy, Aerosols, Carbon, H2O, Organics & Nitrogen (BEACHON) project seeks to understand the feedbacks and inter-relationships between hydrology, biogenic emissions, carbon assimilation, aerosol properties, cl
Externí odkaz:
https://doaj.org/article/e1ab1a60f1b341bf8d360bf95feb1b7c
Autor:
G. M. Wolfe, C. Cantrell, S. Kim, R. L. Mauldin III, T. Karl, P. Harley, A. Turnipseed, W. Zheng, F. Flocke, E. C. Apel, R. S. Hornbrook, S. R. Hall, K. Ullmann, S. B. Henry, J. P. DiGangi, E. S. Boyle, L. Kaser, R. Schnitzhofer, A. Hansel, M. Graus, Y. Nakashima, Y. Kajii, A. Guenther, F. N. Keutsch
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 9, Pp 4715-4732 (2014)
Organic peroxy (RO2) and hydroperoxy (HO2) radicals are key intermediates in the photochemical processes that generate ozone, secondary organic aerosol and reactive nitrogen reservoirs throughout the troposphere. In regions with ample biogenic hydroc
Externí odkaz:
https://doaj.org/article/176fee7890264c4fb8053358cbf5edf3
Autor:
L. Kaser, T. Karl, A. Guenther, M. Graus, R. Schnitzhofer, A. Turnipseed, L. Fischer, P. Harley, M. Madronich, D. Gochis, F. N. Keutsch, A. Hansel
Publikováno v:
Atmospheric Chemistry and Physics, Vol 13, Iss 23, Pp 11935-11947 (2013)
We present the first eddy covariance flux measurements of volatile organic compounds (VOCs) using a proton-transfer-reaction time-of-flight mass spectrometer (PTR-TOF-MS) above a ponderosa pine forest in Colorado, USA. The high mass resolution of the
Externí odkaz:
https://doaj.org/article/1df4114d80374f25be8433963efc122a
Publikováno v:
Atmospheric Chemistry and Physics, Vol 13, Iss 23, Pp 11803-11817 (2013)
This study investigated the impacts of seasonal and regional variability in biogenic volatile organic compounds (BVOCs) on surface ozone over the Pearl River delta (PRD) region in southern China in 2010 with the WRF–Chem/MEGAN (Weather Research and
Externí odkaz:
https://doaj.org/article/e8dee2a9244843ddab03aa460a786c3b
Autor:
J. L. Fry, D. C. Draper, K. J. Zarzana, P. Campuzano-Jost, D. A. Day, J. L. Jimenez, S. S. Brown, R. C. Cohen, L. Kaser, A. Hansel, L. Cappellin, T. Karl, A. Hodzic Roux, A. Turnipseed, C. Cantrell, B. L. Lefer, N. Grossberg
Publikováno v:
Atmospheric Chemistry and Physics, Vol 13, Iss 17, Pp 8585-8605 (2013)
At the Rocky Mountain Biogenic Aerosol Study (BEACHON-RoMBAS) field campaign in the Colorado front range, July–August 2011, measurements of gas- and aerosol-phase organic nitrates enabled a study of the role of NOx (NOx = NO + NO2) in oxidation of
Externí odkaz:
https://doaj.org/article/13aa829563da4b28ac9fc29f99403b14
Autor:
L. Kaser, T. Karl, R. Schnitzhofer, M. Graus, I. S. Herdlinger-Blatt, J. P. DiGangi, B. Sive, A. Turnipseed, R. S. Hornbrook, W. Zheng, F. M. Flocke, A. Guenther, F. N. Keutsch, E. Apel, A. Hansel
Publikováno v:
Atmospheric Chemistry and Physics, Vol 13, Iss 5, Pp 2893-2906 (2013)
Volatile organic compound (VOC) mixing ratios measured by five independent instruments are compared at a forested site dominated by ponderosa pine (Pinus Ponderosa) during the BEACHON-ROCS field study in summer 2010. The instruments included a Proton
Externí odkaz:
https://doaj.org/article/801610075c0443e99903f9722fd6674c