Zobrazeno 1 - 10
of 439
pro vyhledávání: '"C A, Keller"'
Autor:
H. M. Amos, N. K. Skaff, S. Schollaert Uz, F. S. Policelli, D. Slayback, E. Macorps, M. J. Jo, K. Patel, C. A. Keller, P. Abue, V. Buchard, A. K. Werner
Publikováno v:
GeoHealth, Vol 7, Iss 12, Pp n/a-n/a (2023)
Abstract Exposure to environmental hazards is an important determinant of health, and the frequency and severity of exposures is expected to be impacted by climate change. Through a partnership with the U.S. National Aeronautics and Space Administrat
Externí odkaz:
https://doaj.org/article/d13fb2fb131f44bbaf4568f2d23accb9
Autor:
R. V. Martin, S. D. Eastham, L. Bindle, E. W. Lundgren, T. L. Clune, C. A. Keller, W. Downs, D. Zhang, R. A. Lucchesi, M. P. Sulprizio, R. M. Yantosca, Y. Li, L. Estrada, W. M. Putman, B. M. Auer, A. L. Trayanov, S. Pawson, D. J. Jacob
Publikováno v:
Geoscientific Model Development, Vol 15, Pp 8731-8748 (2022)
We describe a new generation of the high-performance GEOS-Chem (GCHP) global model of atmospheric composition developed as part of the GEOS-Chem version 13 series. GEOS-Chem is an open-source grid-independent model that can be used online within a me
Externí odkaz:
https://doaj.org/article/ca13a85666b94a268146e2adab775db1
Autor:
T. C. Stevenson Keller, Christophe Lechauve, Alexander S. Keller, Gilson Brás Broseghini-Filho, Joshua T. Butcher, Henry R. Askew Page, Aditi Islam, Zhe Yin Tan, Leon J. DeLalio, Steven Brooks, Poonam Sharma, Kwangseok Hong, Wenhao Xu, Alessandra Simão Padilha, Claire A. Ruddiman, Angela K. Best, Edgar Macal, Daniel B. Kim-Shapiro, George Christ, Zhen Yan, Miriam M. Cortese-Krott, Karina Ricart, Rakesh Patel, Timothy P. Bender, Swapnil K. Sonkusare, Mitchell J. Weiss, Hans Ackerman, Linda Columbus, Brant E. Isakson
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-15 (2022)
In mammals, hypoxia causes dilation of small arteries for increased metabolic demand. Keller et al used novel transgenic mice to show alpha hemoglobin in endothelium, once thought only in red blood cells, can regulate hypoxic-mediated dilation.
Externí odkaz:
https://doaj.org/article/b9f465340f0741ff838bff1e07d81c95
Publikováno v:
Communications Chemistry, Vol 5, Iss 1, Pp 1-8 (2022)
Sustainable aviation fuels offer the opportunity to both reduce CO2 emissions and produce fuels with superior properties to conventional petroleum-based fuels. Here, the bio-based monoterpene linalool is converted into an aviation fuel mixture primar
Externí odkaz:
https://doaj.org/article/a31f423531494bb5a10a59b005193754
Autor:
P. A. Wales, C. A. Keller, K. E. Knowland, S. Pawson, S. Choi, F. Hendrick, M. VanRoozendael, R. J. Salawitch, R. Sulieman, W. F. Swanson
Publikováno v:
Journal of Advances in Modeling Earth Systems, Vol 15, Iss 8, Pp n/a-n/a (2023)
Abstract During polar spring, periods of elevated tropospheric bromine drive near complete removal of surface ozone. These events impact the tropospheric oxidative capacity and are an area of active research with multiple approaches for representing
Externí odkaz:
https://doaj.org/article/45fe26a54f41422eb58a0b7d93d4227c
Autor:
L. Bindle, R. V. Martin, M. J. Cooper, E. W. Lundgren, S. D. Eastham, B. M. Auer, T. L. Clune, H. Weng, J. Lin, L. T. Murray, J. Meng, C. A. Keller, W. M. Putman, S. Pawson, D. J. Jacob
Publikováno v:
Geoscientific Model Development, Vol 14, Pp 5977-5997 (2021)
Modeling atmospheric chemistry at fine resolution globally is computationally expensive; the capability to focus on specific geographic regions using a multiscale grid is desirable. Here, we develop, validate, and demonstrate stretched grids in the G
Externí odkaz:
https://doaj.org/article/fe4c2e6b73bd44b9846b2284fac8b92f
Autor:
H. Lin, D. J. Jacob, E. W. Lundgren, M. P. Sulprizio, C. A. Keller, T. M. Fritz, S. D. Eastham, L. K. Emmons, P. C. Campbell, B. Baker, R. D. Saylor, R. Montuoro
Publikováno v:
Geoscientific Model Development, Vol 14, Pp 5487-5506 (2021)
Emissions are a central component of atmospheric chemistry models. The Harmonized Emissions Component (HEMCO) is a software component for computing emissions from a user-selected ensemble of emission inventories and algorithms. It allows users to re-
Externí odkaz:
https://doaj.org/article/2a6a3364118e41e3bfb01c7be57c8f64
Autor:
K. E. Knowland, C. A. Keller, P. A. Wales, K. Wargan, L. Coy, M. S. Johnson, J. Liu, R. A. Lucchesi, S. D. Eastham, E. Fleming, Q. Liang, T. Leblanc, N. J. Livesey, K. A. Walker, L. E. Ott, S. Pawson
Publikováno v:
Journal of Advances in Modeling Earth Systems, Vol 14, Iss 6, Pp n/a-n/a (2022)
Abstract The NASA Goddard Earth Observing System (GEOS) Composition Forecast (GEOS‐CF) provides recent estimates and 5‐day forecasts of atmospheric composition to the public in near‐real time. To do this, the GEOS Earth system model is coupled
Externí odkaz:
https://doaj.org/article/8b0fff55845143e1b2bc5c099a915ad3
Publikováno v:
Geochronology, Vol 3, Pp 181-198 (2021)
Recent attempts to establish the eruptive history of the Deccan Traps large igneous province have used both U−Pb (Schoene et al., 2019) and 40Ar/39Ar (Sprain et al., 2019) geochronology. Both of these studies report dates with high precision and un
Externí odkaz:
https://doaj.org/article/69ae4b5fafc44168a44d410a1465b242
Autor:
C. A. Keller, M. J. Evans, K. E. Knowland, C. A. Hasenkopf, S. Modekurty, R. A. Lucchesi, T. Oda, B. B. Franca, F. C. Mandarino, M. V. Díaz Suárez, R. G. Ryan, L. H. Fakes, S. Pawson
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 3555-3592 (2021)
Social distancing to combat the COVID-19 pandemic has led to widespread reductions in air pollutant emissions. Quantifying these changes requires a business-as-usual counterfactual that accounts for the synoptic and seasonal variability of air pollut
Externí odkaz:
https://doaj.org/article/7e76dac4af184ffdaf71668e47656e41