Zobrazeno 1 - 10
of 294
pro vyhledávání: '"B, Baier"'
Autor:
N. Mostafavi Pak, J. K. Hedelius, S. Roche, L. Cunningham, B. Baier, C. Sweeney, C. Roehl, J. Laughner, G. Toon, P. Wennberg, H. Parker, C. Arrowsmith, J. Mendonca, P. Fogal, T. Wizenberg, B. Herrera, K. Strong, K. A. Walker, F. Vogel, D. Wunch
Publikováno v:
Atmospheric Measurement Techniques, Vol 16, Pp 1239-1261 (2023)
EM27/SUN devices are portable solar-viewing Fourier transform spectrometers (FTSs) that are being widely used to constrain measurements of greenhouse gas emissions and validate satellite trace gas measurements. On a 6-week-long campaign in the summer
Externí odkaz:
https://doaj.org/article/f2a0d507874842c48e1af92ed1c9d123
Autor:
J. Thanwerdas, M. Saunois, I. Pison, D. Hauglustaine, A. Berchet, B. Baier, C. Sweeney, P. Bousquet
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 15489-15508 (2022)
Atmospheric methane (CH4) concentrations have been rising since 2007 due to an imbalance between CH4 sources and sinks. The CH4 budget is generally estimated through top-down approaches using chemistry transport models (CTMs) and CH4 observations as
Externí odkaz:
https://doaj.org/article/947d8369d09c469393f2201512119627
Autor:
B. Rastogi, J. B. Miller, M. Trudeau, A. E. Andrews, L. Hu, M. Mountain, T. Nehrkorn, B. Baier, K. McKain, J. Mund, K. Guan, C. B. Alden
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 14385-14401 (2021)
Feedbacks between the climate system and the carbon cycle represent a key source of uncertainty in model projections of Earth's climate, in part due to our inability to directly measure large-scale biosphere–atmosphere carbon fluxes. In situ measur
Externí odkaz:
https://doaj.org/article/31e8afe44a45455ca8150002b70dff61
Autor:
S. Roche, K. Strong, D. Wunch, J. Mendonca, C. Sweeney, B. Baier, S. C. Biraud, J. L. Laughner, G. C. Toon, B. J. Connor
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 3087-3118 (2021)
We evaluate vertical profile retrievals of CO2 from 0.02 cm−1 resolution ground-based near-infrared solar absorption spectra with the GFIT2 algorithm, using improved spectroscopic line lists and line shapes. With these improvements, CO2 profiles we
Externí odkaz:
https://doaj.org/article/5721fd4c9cfb4c0882a8be450bcd5fa2
Autor:
P. Weibring, D. Richter, J. G. Walega, A. Fried, J. DiGangi, H. Halliday, Y. Choi, B. Baier, C. Sweeney, B. Miller, K. J. Davis, Z. Barkley, M. D. Obland
Publikováno v:
Atmospheric Measurement Techniques, Vol 13, Pp 6095-6112 (2020)
An airborne trace gas sensor based on mid-infrared technology is presented for fast (1 s) and high-precision ethane measurements during the Atmospheric Carbon and Transport-America (ACT-America) study. The ACT-America campaign is a multiyear effort
Externí odkaz:
https://doaj.org/article/11098c56e9d14164b98b20ac36a3bcf9
Autor:
J. C. Laube, E. C. L. Elvidge, K. E. Adcock, B. Baier, C. A. M. Brenninkmeijer, H. Chen, E. S. Droste, J.-U. Grooß, P. Heikkinen, A. J. Hind, R. Kivi, A. Lojko, S. A. Montzka, D. E. Oram, S. Randall, T. Röckmann, W. T. Sturges, C. Sweeney, M. Thomas, E. Tuffnell, F. Ploeger
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 9771-9782 (2020)
We present new observations of trace gases in the stratosphere based on a cost-effective sampling technique that can access much higher altitudes than aircraft. The further development of this method now provides detection of species with abundances
Externí odkaz:
https://doaj.org/article/838e657c9f784aabb8c5ad8a7df2526c
Autor:
J. Kostinek, A. Roiger, K. J. Davis, C. Sweeney, J. P. DiGangi, Y. Choi, B. Baier, F. Hase, J. Groß, M. Eckl, T. Klausner, A. Butz
Publikováno v:
Atmospheric Measurement Techniques, Vol 12, Pp 1767-1783 (2019)
Tunable laser direct absorption spectroscopy is a widely used technique for the in situ sensing of atmospheric composition. Aircraft deployment poses a challenging operating environment for instruments measuring climatologically relevant gases in the
Externí odkaz:
https://doaj.org/article/5efb542fb0e045dab10de036271b0332
Publikováno v:
PLoS ONE, Vol 11, Iss 4, p e0153446 (2016)
Some of the greatest transformations in vertebrate history involve developmental and evolutionary origins of avian flight. Flight is the most power-demanding mode of locomotion, and volant adult birds have many anatomical features that presumably hel
Externí odkaz:
https://doaj.org/article/f086dc157f6a47df8d85208244f7b836
Publikováno v:
Chemie Ingenieur Technik. 94:1331-1331
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::babc161bc47ab0e33edef56ef60295d2
https://doi.org/10.1002/cite.202255151
https://doi.org/10.1002/cite.202255151
Publikováno v:
PLoS ONE, Vol 8, Iss 5, p e63982 (2013)
Past studies have shown that birds use their wings not only for flight, but also when ascending steep inclines. Uphill flap-running or wing-assisted incline running (WAIR) is used by both flight-incapable fledglings and flight-capable adults to retre
Externí odkaz:
https://doaj.org/article/e4a6374cc89649b8bf6a02e19c624bfb