Long-term Variations of Venus's 365 nm Albedo Observed by Venus Express, Akatsuki, MESSENGER, and the Hubble Space Telescope
dc.contributor.author | Lee, Yeon Joo | |
dc.contributor.author | Jessup, Kandis Lea | |
dc.contributor.author | Pérez Hoyos, Santiago | |
dc.contributor.author | Titov, Dmitrij V. | |
dc.contributor.author | Lebonnois, Sebastien | |
dc.contributor.author | Peralta Calvillo, Javier | |
dc.contributor.author | Horinouchi, Takeshi | |
dc.contributor.author | Imamura, Takeshi | |
dc.contributor.author | Limaye, Sanjay | |
dc.contributor.author | Marcq, Emmanuel | |
dc.contributor.author | Takagi, Masahiro | |
dc.contributor.author | Yamazaki, Atsushi | |
dc.contributor.author | Yamada, Manabu | |
dc.contributor.author | Watanabe, Shigeto | |
dc.contributor.author | Murakami, Shinya | |
dc.contributor.author | Ogohara, Kazunori | |
dc.contributor.author | McClintock, William M. | |
dc.contributor.author | Holsclaw, Gregory | |
dc.contributor.author | Roman, Anthony | |
dc.date.accessioned | 2019-12-30T09:27:11Z | |
dc.date.available | 2019-12-30T09:27:11Z | |
dc.date.issued | 2019-08-26 | |
dc.identifier.citation | Astronomical Journal 158(3) : (2019) // Article ID 126 | es_ES |
dc.identifier.issn | 0004-6256 | |
dc.identifier.issn | 1538-3881 | |
dc.identifier.uri | http://hdl.handle.net/10810/37404 | |
dc.description.abstract | An unknown absorber near the cloud-top level of Venus generates a broad absorption feature from the ultraviolet (UV) to visible, peaking around 360 nm, and therefore plays a critical role in the solar energy absorption. We present a quantitative study of the variability of the cloud albedo at 365 nm and its impact on Venus's solar heating rates based on an analysis of Venus Express and Akatsuki UV images and Hubble Space Telescope and MESSENGER UV spectral data; in this analysis, the calibration correction factor of the UV images of Venus Express (Venus Monitoring Camera) is updated relative to the Hubble and MESSENGER albedo measurements. Our results indicate that the 365 nm albedo varied by a factor of 2 from 2006 to 2017 over the entire planet, producing a 25%-40% change in the low-latitude solar heating rate according to our radiative transfer calculations. Thus, the cloud-top level atmosphere should have experienced considerable solar heating variations over this period. Our global circulation model calculations show that this variable solar heating rate may explain the observed variations of zonal wind from 2006 to 2017. Overlaps in the timescale of the long-term UV albedo and the solar activity variations make it plausible that solar extreme UV intensity and cosmic-ray variations influenced the observed albedo trends. The albedo variations might also be linked with temporal variations of the upper cloud SO2 gas abundance, which affects the H2SO4-H2O aerosol formation. | es_ES |
dc.description.sponsorship | Y.J.L. thanks T. Satoh, R. Lorenz, N. Ignatiev, R. Hueso, and C.C.C. Tsang for helpful comments. K.-L.J. was supported by the NASA/PS program, grant NNX16AK82G, for the analysis of the 365 nm STIS data. S.P.-H. was supported by the Spanish MICIIN project AYA2015-65041-P (MINECOFE-DER, 695UE) and Grupos Gobierno Vasco IT-765-13. S.Le. acknowledges support from INSU-PNP. The IPSL VGCM computations were done thanks to the High-Performance Computing (HPC) resources of the Centre Informatique National de l'Enseignement Superieur (CINES) under allocation No. A0040110391 made by the Grand Equipement National de Calcul Intensif (GENCI). J.P. acknowledges the JAXA's International Top Young Fellowship. Solar heating calculations were performed on a Supermicro SuperServer Intel (R) Xeon(R) CPU E5-2620 v4 funded through JAXA's International Top Young Fellowship. T.H., M.T., and T.I. acknowledge JSPS grant 16H02231. S.Li. was supported by a NASA Participating Scientist in Residence grant (NNX16AC79G). E.M. acknowledges support from CNES and INSU-PNP for SPICAV data analysis. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | IOP | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/AYA2015-65041-P695UE | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | planets and satellites: atmospheres | es_ES |
dc.subject | planets and satellites: individual (Venus) | es_ES |
dc.subject | planets and satellites: terrestrial planets | es_ES |
dc.subject | radiative energy-balance | es_ES |
dc.subject | temporal variability | es_ES |
dc.subject | cloud features | es_ES |
dc.subject | cyclic nature | es_ES |
dc.subject | water-vapor | es_ES |
dc.subject | atmosphere | es_ES |
dc.subject | temperature | es_ES |
dc.subject | ultraviolet | es_ES |
dc.subject | solar | es_ES |
dc.subject | haze | es_ES |
dc.title | Long-term Variations of Venus's 365 nm Albedo Observed by Venus Express, Akatsuki, MESSENGER, and the Hubble Space Telescope | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. | es_ES |
dc.rights.holder | Atribución 3.0 España | * |
dc.relation.publisherversion | https://iopscience.iop.org/article/10.3847/1538-3881/ab3120 | es_ES |
dc.identifier.doi | 10.3847/1538-3881/ab3120 | |
dc.departamentoes | Física aplicada I | es_ES |
dc.departamentoeu | Fisika aplikatua I | es_ES |
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