Background levels of methane in Mars atmosphere show strong seasonal variations

Webster, C. R., Mahaffy, P. R., Atreya, S. K., Moores, J. E., Flesch, G. J., Malespin, C., McKay, C. P., Martinez, G., Smith, C. L., Martin-Torres, J., Gomez-Elvira, J., Zorzano, M.-P., Wong, M. H., Trainer, M. G., Steele, A., Archer, D., Sutter, B., Coll, P. J., Freissinet, C., Meslin, P.-Y., Gough, R. V., House, C. H., Pavlov, A., Eigenbrode, J. L., Glavin, D. P., Pearson, J. C., Keymeulen, D., Christensen, L. E., Schwenzer, S. P., Navarro-Gonzalez, R., Pla-Garcia, J., Rafkin, S. C. R., Vicente-Retortillo, A., Kahanpää, H., Viudez-Moreiras, D., Smith, M. D., Harri, A.-M., Genzer, M., Hassler, D. M., Lemmon, M., Crisp, J., Sander, S. P., Zurek, R. W., Vasavada, A. R.
American Association for the Advancement of Science (AAAS)
Published 2018

Publication Date:	2018-06-08
Publisher:	American Association for the Advancement of Science (AAAS)
Print ISSN:	0036-8075
Electronic ISSN:	1095-9203
Topics:	Biology Chemistry and Pharmacology Geosciences Computer Science Medicine Natural Sciences in General Physics
Keywords:	Geochemistry, Geophysics, Planetary Science
Published by:	http://www.aaas.org/

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_version_	1836398964810711040
autor	Webster, C. R., Mahaffy, P. R., Atreya, S. K., Moores, J. E., Flesch, G. J., Malespin, C., McKay, C. P., Martinez, G., Smith, C. L., Martin-Torres, J., Gomez-Elvira, J., Zorzano, M.-P., Wong, M. H., Trainer, M. G., Steele, A., Archer, D., Sutter, B., Coll, P. J., Freissinet, C., Meslin, P.-Y., Gough, R. V., House, C. H., Pavlov, A., Eigenbrode, J. L., Glavin, D. P., Pearson, J. C., Keymeulen, D., Christensen, L. E., Schwenzer, S. P., Navarro-Gonzalez, R., Pla-Garcia, J., Rafkin, S. C. R., Vicente-Retortillo, A., Kahanpää, H., Viudez-Moreiras, D., Smith, M. D., Harri, A.-M., Genzer, M., Hassler, D. M., Lemmon, M., Crisp, J., Sander, S. P., Zurek, R. W., Vasavada, A. R.
beschreibung	Variable levels of methane in the martian atmosphere have eluded explanation partly because the measurements are not repeatable in time or location. We report in situ measurements at Gale crater made over a 5-year period by the Tunable Laser Spectrometer on the Curiosity rover. The background levels of methane have a mean value 0.41 ± 0.16 parts per billion by volume (ppbv) (95% confidence interval) and exhibit a strong, repeatable seasonal variation (0.24 to 0.65 ppbv). This variation is greater than that predicted from either ultraviolet degradation of impact-delivered organics on the surface or from the annual surface pressure cycle. The large seasonal variation in the background and occurrences of higher temporary spikes (~7 ppbv) are consistent with small localized sources of methane released from martian surface or subsurface reservoirs.
citation_standardnr	6279316
datenlieferant	ipn_articles
feed_id	25
feed_publisher	American Association for the Advancement of Science (AAAS)
feed_publisher_url	http://www.aaas.org/
insertion_date	2018-06-08
journaleissn	1095-9203
journalissn	0036-8075
publikationsjahr_anzeige	2018
publikationsjahr_facette	2018
publikationsjahr_intervall	7984:2015-2019
publikationsjahr_sort	2018
publisher	American Association for the Advancement of Science (AAAS)
quelle	Science
relation	http://science.sciencemag.org/cgi/content/short/360/6393/1093?rss=1
schlagwort	Geochemistry, Geophysics, Planetary Science
search_space	articles
shingle_author_1	Webster, C. R., Mahaffy, P. R., Atreya, S. K., Moores, J. E., Flesch, G. J., Malespin, C., McKay, C. P., Martinez, G., Smith, C. L., Martin-Torres, J., Gomez-Elvira, J., Zorzano, M.-P., Wong, M. H., Trainer, M. G., Steele, A., Archer, D., Sutter, B., Coll, P. J., Freissinet, C., Meslin, P.-Y., Gough, R. V., House, C. H., Pavlov, A., Eigenbrode, J. L., Glavin, D. P., Pearson, J. C., Keymeulen, D., Christensen, L. E., Schwenzer, S. P., Navarro-Gonzalez, R., Pla-Garcia, J., Rafkin, S. C. R., Vicente-Retortillo, A., Kahanpää, H., Viudez-Moreiras, D., Smith, M. D., Harri, A.-M., Genzer, M., Hassler, D. M., Lemmon, M., Crisp, J., Sander, S. P., Zurek, R. W., Vasavada, A. R.
shingle_author_2	Webster, C. R., Mahaffy, P. R., Atreya, S. K., Moores, J. E., Flesch, G. J., Malespin, C., McKay, C. P., Martinez, G., Smith, C. L., Martin-Torres, J., Gomez-Elvira, J., Zorzano, M.-P., Wong, M. H., Trainer, M. G., Steele, A., Archer, D., Sutter, B., Coll, P. J., Freissinet, C., Meslin, P.-Y., Gough, R. V., House, C. H., Pavlov, A., Eigenbrode, J. L., Glavin, D. P., Pearson, J. C., Keymeulen, D., Christensen, L. E., Schwenzer, S. P., Navarro-Gonzalez, R., Pla-Garcia, J., Rafkin, S. C. R., Vicente-Retortillo, A., Kahanpää, H., Viudez-Moreiras, D., Smith, M. D., Harri, A.-M., Genzer, M., Hassler, D. M., Lemmon, M., Crisp, J., Sander, S. P., Zurek, R. W., Vasavada, A. R.
shingle_author_3	Webster, C. R., Mahaffy, P. R., Atreya, S. K., Moores, J. E., Flesch, G. J., Malespin, C., McKay, C. P., Martinez, G., Smith, C. L., Martin-Torres, J., Gomez-Elvira, J., Zorzano, M.-P., Wong, M. H., Trainer, M. G., Steele, A., Archer, D., Sutter, B., Coll, P. J., Freissinet, C., Meslin, P.-Y., Gough, R. V., House, C. H., Pavlov, A., Eigenbrode, J. L., Glavin, D. P., Pearson, J. C., Keymeulen, D., Christensen, L. E., Schwenzer, S. P., Navarro-Gonzalez, R., Pla-Garcia, J., Rafkin, S. C. R., Vicente-Retortillo, A., Kahanpää, H., Viudez-Moreiras, D., Smith, M. D., Harri, A.-M., Genzer, M., Hassler, D. M., Lemmon, M., Crisp, J., Sander, S. P., Zurek, R. W., Vasavada, A. R.
shingle_author_4	Webster, C. R., Mahaffy, P. R., Atreya, S. K., Moores, J. E., Flesch, G. J., Malespin, C., McKay, C. P., Martinez, G., Smith, C. L., Martin-Torres, J., Gomez-Elvira, J., Zorzano, M.-P., Wong, M. H., Trainer, M. G., Steele, A., Archer, D., Sutter, B., Coll, P. J., Freissinet, C., Meslin, P.-Y., Gough, R. V., House, C. H., Pavlov, A., Eigenbrode, J. L., Glavin, D. P., Pearson, J. C., Keymeulen, D., Christensen, L. E., Schwenzer, S. P., Navarro-Gonzalez, R., Pla-Garcia, J., Rafkin, S. C. R., Vicente-Retortillo, A., Kahanpää, H., Viudez-Moreiras, D., Smith, M. D., Harri, A.-M., Genzer, M., Hassler, D. M., Lemmon, M., Crisp, J., Sander, S. P., Zurek, R. W., Vasavada, A. R.
shingle_catch_all_1	Background levels of methane in Mars atmosphere show strong seasonal variations Geochemistry, Geophysics, Planetary Science Variable levels of methane in the martian atmosphere have eluded explanation partly because the measurements are not repeatable in time or location. We report in situ measurements at Gale crater made over a 5-year period by the Tunable Laser Spectrometer on the Curiosity rover. The background levels of methane have a mean value 0.41 ± 0.16 parts per billion by volume (ppbv) (95% confidence interval) and exhibit a strong, repeatable seasonal variation (0.24 to 0.65 ppbv). This variation is greater than that predicted from either ultraviolet degradation of impact-delivered organics on the surface or from the annual surface pressure cycle. The large seasonal variation in the background and occurrences of higher temporary spikes (~7 ppbv) are consistent with small localized sources of methane released from martian surface or subsurface reservoirs. Webster, C. R., Mahaffy, P. R., Atreya, S. K., Moores, J. E., Flesch, G. J., Malespin, C., McKay, C. P., Martinez, G., Smith, C. L., Martin-Torres, J., Gomez-Elvira, J., Zorzano, M.-P., Wong, M. H., Trainer, M. G., Steele, A., Archer, D., Sutter, B., Coll, P. J., Freissinet, C., Meslin, P.-Y., Gough, R. V., House, C. H., Pavlov, A., Eigenbrode, J. L., Glavin, D. P., Pearson, J. C., Keymeulen, D., Christensen, L. E., Schwenzer, S. P., Navarro-Gonzalez, R., Pla-Garcia, J., Rafkin, S. C. R., Vicente-Retortillo, A., Kahanpää, H., Viudez-Moreiras, D., Smith, M. D., Harri, A.-M., Genzer, M., Hassler, D. M., Lemmon, M., Crisp, J., Sander, S. P., Zurek, R. W., Vasavada, A. R. American Association for the Advancement of Science (AAAS) 0036-8075 00368075 1095-9203 10959203
shingle_catch_all_2	Background levels of methane in Mars atmosphere show strong seasonal variations Geochemistry, Geophysics, Planetary Science Variable levels of methane in the martian atmosphere have eluded explanation partly because the measurements are not repeatable in time or location. We report in situ measurements at Gale crater made over a 5-year period by the Tunable Laser Spectrometer on the Curiosity rover. The background levels of methane have a mean value 0.41 ± 0.16 parts per billion by volume (ppbv) (95% confidence interval) and exhibit a strong, repeatable seasonal variation (0.24 to 0.65 ppbv). This variation is greater than that predicted from either ultraviolet degradation of impact-delivered organics on the surface or from the annual surface pressure cycle. The large seasonal variation in the background and occurrences of higher temporary spikes (~7 ppbv) are consistent with small localized sources of methane released from martian surface or subsurface reservoirs. Webster, C. R., Mahaffy, P. R., Atreya, S. K., Moores, J. E., Flesch, G. J., Malespin, C., McKay, C. P., Martinez, G., Smith, C. L., Martin-Torres, J., Gomez-Elvira, J., Zorzano, M.-P., Wong, M. H., Trainer, M. G., Steele, A., Archer, D., Sutter, B., Coll, P. J., Freissinet, C., Meslin, P.-Y., Gough, R. V., House, C. H., Pavlov, A., Eigenbrode, J. L., Glavin, D. P., Pearson, J. C., Keymeulen, D., Christensen, L. E., Schwenzer, S. P., Navarro-Gonzalez, R., Pla-Garcia, J., Rafkin, S. C. R., Vicente-Retortillo, A., Kahanpää, H., Viudez-Moreiras, D., Smith, M. D., Harri, A.-M., Genzer, M., Hassler, D. M., Lemmon, M., Crisp, J., Sander, S. P., Zurek, R. W., Vasavada, A. R. American Association for the Advancement of Science (AAAS) 0036-8075 00368075 1095-9203 10959203
shingle_catch_all_3	Background levels of methane in Mars atmosphere show strong seasonal variations Geochemistry, Geophysics, Planetary Science Variable levels of methane in the martian atmosphere have eluded explanation partly because the measurements are not repeatable in time or location. We report in situ measurements at Gale crater made over a 5-year period by the Tunable Laser Spectrometer on the Curiosity rover. The background levels of methane have a mean value 0.41 ± 0.16 parts per billion by volume (ppbv) (95% confidence interval) and exhibit a strong, repeatable seasonal variation (0.24 to 0.65 ppbv). This variation is greater than that predicted from either ultraviolet degradation of impact-delivered organics on the surface or from the annual surface pressure cycle. The large seasonal variation in the background and occurrences of higher temporary spikes (~7 ppbv) are consistent with small localized sources of methane released from martian surface or subsurface reservoirs. Webster, C. R., Mahaffy, P. R., Atreya, S. K., Moores, J. E., Flesch, G. J., Malespin, C., McKay, C. P., Martinez, G., Smith, C. L., Martin-Torres, J., Gomez-Elvira, J., Zorzano, M.-P., Wong, M. H., Trainer, M. G., Steele, A., Archer, D., Sutter, B., Coll, P. J., Freissinet, C., Meslin, P.-Y., Gough, R. V., House, C. H., Pavlov, A., Eigenbrode, J. L., Glavin, D. P., Pearson, J. C., Keymeulen, D., Christensen, L. E., Schwenzer, S. P., Navarro-Gonzalez, R., Pla-Garcia, J., Rafkin, S. C. R., Vicente-Retortillo, A., Kahanpää, H., Viudez-Moreiras, D., Smith, M. D., Harri, A.-M., Genzer, M., Hassler, D. M., Lemmon, M., Crisp, J., Sander, S. P., Zurek, R. W., Vasavada, A. R. American Association for the Advancement of Science (AAAS) 0036-8075 00368075 1095-9203 10959203
shingle_catch_all_4	Background levels of methane in Mars atmosphere show strong seasonal variations Geochemistry, Geophysics, Planetary Science Variable levels of methane in the martian atmosphere have eluded explanation partly because the measurements are not repeatable in time or location. We report in situ measurements at Gale crater made over a 5-year period by the Tunable Laser Spectrometer on the Curiosity rover. The background levels of methane have a mean value 0.41 ± 0.16 parts per billion by volume (ppbv) (95% confidence interval) and exhibit a strong, repeatable seasonal variation (0.24 to 0.65 ppbv). This variation is greater than that predicted from either ultraviolet degradation of impact-delivered organics on the surface or from the annual surface pressure cycle. The large seasonal variation in the background and occurrences of higher temporary spikes (~7 ppbv) are consistent with small localized sources of methane released from martian surface or subsurface reservoirs. Webster, C. R., Mahaffy, P. R., Atreya, S. K., Moores, J. E., Flesch, G. J., Malespin, C., McKay, C. P., Martinez, G., Smith, C. L., Martin-Torres, J., Gomez-Elvira, J., Zorzano, M.-P., Wong, M. H., Trainer, M. G., Steele, A., Archer, D., Sutter, B., Coll, P. J., Freissinet, C., Meslin, P.-Y., Gough, R. V., House, C. H., Pavlov, A., Eigenbrode, J. L., Glavin, D. P., Pearson, J. C., Keymeulen, D., Christensen, L. E., Schwenzer, S. P., Navarro-Gonzalez, R., Pla-Garcia, J., Rafkin, S. C. R., Vicente-Retortillo, A., Kahanpää, H., Viudez-Moreiras, D., Smith, M. D., Harri, A.-M., Genzer, M., Hassler, D. M., Lemmon, M., Crisp, J., Sander, S. P., Zurek, R. W., Vasavada, A. R. American Association for the Advancement of Science (AAAS) 0036-8075 00368075 1095-9203 10959203
shingle_title_1	Background levels of methane in Mars atmosphere show strong seasonal variations
shingle_title_2	Background levels of methane in Mars atmosphere show strong seasonal variations
shingle_title_3	Background levels of methane in Mars atmosphere show strong seasonal variations
shingle_title_4	Background levels of methane in Mars atmosphere show strong seasonal variations
timestamp	2025-06-30T23:35:27.395Z
titel	Background levels of methane in Mars atmosphere show strong seasonal variations
titel_suche	Background levels of methane in Mars atmosphere show strong seasonal variations
topic	W V TE-TZ SQ-SU WW-YZ TA-TD U
uid	ipn_articles_6279316