Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Jacob Svensmark"'
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 9, Pp n/a-n/a (2024)
Abstract Observations of marine stratus clouds in clean air off the Californian coast reveal a functional relationship between the number of cloud condensation nuclei (CCN) and supersaturation. Satellite‐derived liquid droplet density estimates the
Externí odkaz:
https://doaj.org/article/1479f9b0f8404988bc9c1b918e95a767
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
Abstract Atmospheric ionization produced by cosmic rays has been suspected to influence aerosols and clouds, but its actual importance has been questioned. If changes in atmospheric ionization have a substantial impact on clouds, one would expect to
Externí odkaz:
https://doaj.org/article/7f5fee2ae3694940a82434a2fa76adf1
Autor:
Martin Bødker Enghoff, Jacob Svensmark, John Leif Jørgensen, Matija Herceg, Stavros Kotsiaros, John E. P. Connerney
Galactic cosmic rays (GCRs), primarily consisting of protons, are ubiquitous throughout the solar system. The greatest source is supernova activity and the flux in the solar system is modulated by the solar wind. Planets can be shielded if they posse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::452ef43fdf37d9bb5491ff88aea6e202
https://doi.org/10.5194/egusphere-egu23-5439
https://doi.org/10.5194/egusphere-egu23-5439
Autor:
Jacob Svensmark
The most recent geomagnetic reversal of Earth’s magnetic dipole field, the Matuyama-Brunhes reversal event, took place 0.78 Ma ago. Detailed spatio-temporal paleomagnetic data have been made available for this time period. Geomagnetic reversals wou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::632cf57fccdbebf85ddfc4e51df09bbf
https://doi.org/10.5194/egusphere-egu23-14450
https://doi.org/10.5194/egusphere-egu23-14450
Dark matter (DM) dominates the properties of large cosmological structures such as galaxy clusters, and the mass profiles of the DM have been inferred for these equilibrated structures for years by using cluster X-ray surface brightnesses and tempera
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::052ece68fbf8d162178db08550f4d875
https://ora.ox.ac.uk/objects/uuid:ef95feaf-ef45-4ba4-aff3-67f60398ed62
https://ora.ox.ac.uk/objects/uuid:ef95feaf-ef45-4ba4-aff3-67f60398ed62
Publikováno v:
Earth and Space Science, Vol 7, Iss 9, Pp n/a-n/a (2020)
The presence of small ions influences the growth dynamics of a size distribution of aerosols. Specifically, the often neglected mass of small ions influences the aerosol growth rate, which may be important for terrestrial cloud formation. To this end
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b2f68e8dc1679d429a821264daca93d
https://doi.org/10.1029/2020ea001142
https://doi.org/10.1029/2020ea001142
Publikováno v:
Svensmark, H, Svensmark, J, Enghoff, M B & Shaviv, N J 2021, ' Atmospheric ionization and cloud radiative forcing ', Scientific Reports, vol. 11, 19668 . https://doi.org/10.1038/s41598-021-99033-1
Svensmark, H, Svensmark, J, Enghoff, M B & Shaviv, N J 2021, ' Atmospheric ionization and cloud radiative forcing ', Scientific Reports, vol. 11, no. 1, 19668 . https://doi.org/10.1038/s41598-021-99033-1
Scientific Reports
Scientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
Svensmark, H, Svensmark, J, Enghoff, M B & Shaviv, N J 2021, ' Atmospheric ionization and cloud radiative forcing ', Scientific Reports, vol. 11, no. 1, 19668 . https://doi.org/10.1038/s41598-021-99033-1
Scientific Reports
Scientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
Atmospheric ionization produced by cosmic rays has been suspected to influence aerosols and clouds, but its actual importance has been questioned. If changes in atmospheric ionization have a substantial impact on clouds, one would expect to observe s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca886862cc1ac307474afca0353b5056
https://orbit.dtu.dk/en/publications/b2b5de55-f14b-4d63-9131-d0468d803a0f
https://orbit.dtu.dk/en/publications/b2b5de55-f14b-4d63-9131-d0468d803a0f
Publikováno v:
Enghoff, M A B & Svensmark, J 2017, ' Measurement of the charging state of 4-70 nm aerosols ', Journal of Aerosol Science, vol. 114, pp. 13-20 . https://doi.org/10.1016/j.jaerosci.2017.08.009
The charging state of aerosols in an 8 m3 reaction chamber was measured using an electrostatic classifier with a condensation particle counter at different levels of ionization in the chamber. By replacing the Kr-85 neutralizer in the classifier with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cc25fe691574e06e2da56c130db5429
https://doi.org/10.1016/j.jaerosci.2017.08.009
https://doi.org/10.1016/j.jaerosci.2017.08.009
Publikováno v:
Svensmark, J, Enghoff, M A B, Shaviv, N J & Svensmark, H 2016, ' The response of clouds and aerosols to cosmic ray decreases ', Journal of Geophysical Research: Space Physics, vol. 121, no. 9, pp. 8152–8181 . https://doi.org/10.1002/2016JA022689
A method is developed to rank Forbush decreases (FDs) in the galactic cosmic ray radiation according to their expected impact on the ionization of the lower atmosphere. Then a Monte Carlo bootstrap-based statistical test is formulated to estimate the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b7afc6870e18c0332845e54ba9caed2f
https://doi.org/10.1002/2016ja022689
https://doi.org/10.1002/2016ja022689
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 448:1644-1659
The caustic technique for measuring mass profiles of galaxy clusters relies on the assumption of spherical symmetry. When applied to aspherical galaxy clusters, the method yields mass estimates affected by the cluster orientation. Here we employ mock
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6a097707306567893f8e949132e25a8
https://doi.org/10.1093/mnras/stu2686
https://doi.org/10.1093/mnras/stu2686