Zobrazeno 1 - 10
of 82
pro vyhledávání: '"P. J. B. Smith"'
Autor:
A. E. Gordon, C. R. Homeyer, J. B. Smith, R. Ueyama, J. M. Dean-Day, E. L. Atlas, K. Smith, J. V. Pittman, D. S. Sayres, D. M. Wilmouth, A. Pandey, J. M. St. Clair, T. F. Hanisco, J. Hare, R. A. Hannun, S. Wofsy, B. C. Daube, S. Donnelly
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 7591-7608 (2024)
Tropopause-overshooting convection in the midlatitudes provides a rapid transport pathway for air from the lower troposphere to reach the upper troposphere and lower stratosphere (UTLS) and can result in the formation of above-anvil cirrus plumes (AA
Externí odkaz:
https://doaj.org/article/ccb425a79bf64cf38fddf77c8a1fa1cc
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 3279-3298 (2023)
We constructed a database of cross-tropopause convection in the Asian monsoon region for the months of May through October of 2017 using overshooting tops (OTs), deep convective features that penetrate the local cirrus anvil layer and the local tropo
Externí odkaz:
https://doaj.org/article/8803575563b04332a991a8e5c1326006
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
The Makganyene Formation is a Siderian (2.45–2.22 Ga) diamictite-dominated succession, with both outcrop and subcrop in the Griqualand West Basin of the Transvaal Group of South Africa. We provide new outcrop and core descriptions from this success
Externí odkaz:
https://doaj.org/article/99d46d05394a47bca5c3ead2beeb9723
Autor:
J. Wilkerson, D. S. Sayres, J. B. Smith, N. Allen, M. Rivero, M. Greenberg, T. Martin, J. G. Anderson
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 3597-3613 (2021)
Stratospheric HCl observations are an important diagnostic for the evaluation of catalytic processes that impact the ozone layer. We report here in situ balloon-borne observations of HCl employing an off-axis integrated cavity output spectrometer (OA
Externí odkaz:
https://doaj.org/article/b1ca50a51bd149a9b64adb11d70346ab
Publikováno v:
European Journal of Mineralogy, Vol 32, Pp 373-385 (2020)
Niasite (IMA2019-105) and johanngeorgenstadtite (IMA2019-122) are Ni4.52+(AsO4)3 dimorphs from Johanngeorgenstadt, Saxony, Germany. The two new minerals occur in association with one another and with aerugite, bunsenite, quartz, rooseveltite and xant
Externí odkaz:
https://doaj.org/article/7102acf2358b4d9e8db4938fe94d97ac
Autor:
Albertus J. B. Smith, Nicolas J. Beukes, Jens Gutzmer, Clark M. Johnson, Andrew D. Czaja, Noah Nhleko, Frikkie de Beer, Jakobus W. Hoffman, Stanley M. Awramik
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-8 (2020)
Abstract The Nconga Formation of the Mesoarchean (~2.96–2.84 Ga) Mozaan Group of the Pongola Supergroup of southern Africa contains the world’s oldest known granular iron formation. Three dimensional reconstructions of the granules using micro-fo
Externí odkaz:
https://doaj.org/article/a867a67a8d1d4168ac170697ece89de5
Autor:
D. W. Fahey, R.-S. Gao, O. Möhler, H. Saathoff, C. Schiller, V. Ebert, M. Krämer, T. Peter, N. Amarouche, L. M. Avallone, R. Bauer, Z. Bozóki, L. E. Christensen, S. M. Davis, G. Durry, C. Dyroff, R. L. Herman, S. Hunsmann, S. M. Khaykin, P. Mackrodt, J. Meyer, J. B. Smith, N. Spelten, R. F. Troy, H. Vömel, S. Wagner, F. G. Wienhold
Publikováno v:
Atmospheric Measurement Techniques, Vol 7, Iss 9, Pp 3177-3213 (2014)
The AquaVIT-1 intercomparison of atmospheric water vapor measurement techniques was conducted at the aerosol and cloud simulation chamber AIDA (Aerosol Interaction and Dynamics in the Atmosphere) at the Karlsruhe Institute of Technology, Germany, in
Externí odkaz:
https://doaj.org/article/4c6f745921724a669426c3fa0c3d8069
Autor:
M. J. Alexander, O. B. Toon, J. A. Smith, J. M. St. Clair, D. S. Sayres, T. F. Hanisco, E. J. Moyer, J. B. Smith, E. M. Weinstock, D. Baumgardner, Q. Mo, B. Baker, P. Lawson, T. V. Bui, L. Pfister, E. J. Jensen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 8, Iss 6, Pp 1621-1633 (2008)
Recent high-altitude aircraft measurements with in situ imaging instruments indicated the presence of relatively large (≃100 μm length), thin (aspect ratios of ≃6:1 or larger) hexagonal plate ice crystals near the tropical tropopause in very low
Externí odkaz:
https://doaj.org/article/85a1741c450c4efc9dbe7f6be4df35b9
Autor:
P. J. Popp, T. P. Marcy, E. J. Jensen, B. Kärcher, D. W. Fahey, R. S. Gao, T. L. Thompson, K. H. Rosenlof, E. C. Richard, R. L. Herman, E. M. Weinstock, J. B. Smith, R. D. May, H. Vömel, J. C. Wilson, A. J. Heymsfield, M. J. Mahoney, A. M. Thompson
Publikováno v:
Atmospheric Chemistry and Physics, Vol 6, Iss 3, Pp 601-611 (2006)
Airborne in situ measurements over the eastern Pacific Ocean in January 2004 have revealed a new category of nitric acid (HNO3)-containing particles in the tropical lower stratosphere. These particles are most likely composed of nitric acid trihydrat
Externí odkaz:
https://doaj.org/article/4047493413264552a5ea88919fb8ac46
Autor:
E. J. Jensen, J. B. Smith, L. Pfister, J. V. Pittman, E. M. Weinstock, D. S. Sayres, R. L. Herman, R. F. Troy, K. Rosenlof, T. L. Thompson, A. M. Fridlind, P. K. Hudson, D. J. Cziczo, A. J. Heymsfield, C. Schmitt, J. C. Wilson
Publikováno v:
Atmospheric Chemistry and Physics, Vol 5, Iss 3, Pp 851-862 (2005)
Recent in situ measurements at tropical tropopause temperatures as low as 187 K indicate supersaturations with respect to ice exceeding 100% with little or no ice present. In contrast, models used to simulate cloud formation near the tropopause assum
Externí odkaz:
https://doaj.org/article/72ecfda815f94afe99ce727c8bb3b803