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Open AccessArticle

Reduced Methane Emissions from Santa Barbara Marine Seeps

1
Institute of Environmental Physics, University of Bremen, FB 1, P.O. Box 330440, D-28334 Bremen, Germany
2
Bubbleology Research International (BRI), Solvang, CA 93463, USA
3
Earth Science Division, NASA Ames Research Center (ARC), Mountain View, CA 94035, USA
4
Center for Interdisciplinary Remotely-Piloted Aircraft Studies (CIRPAS), Marina, CA 93933, USA
*
Author to whom correspondence should be addressed.
Remote Sens. 2017, 9(11), 1162; https://doi.org/10.3390/rs9111162
Received: 1 September 2017 / Revised: 14 October 2017 / Accepted: 2 November 2017 / Published: 13 November 2017
(This article belongs to the Special Issue Remote Sensing of Greenhouse Gases)
Airborne in situ and remote sensing measurements of methane were performed over the marine seeps in the Santa Barbara Channel close to the Coal Oil Point in California on two days in June and August 2014 with the aim to re-assess their methane emissions. During this period, methane column averaged dry air mole fractions derived from airborne remote sensing measurements in the short-wave infrared and airborne in situ measurements of methane indicate that emissions are 2–6 kt CH 4 y 1 , significantly lower than expected from previous publications. This is also confirmed by the on ground in situ measurement time series recorded at the onshore West Campus Monitoring Station in Santa Barbara. Using a time series of methane data, a decline in methane concentrations between 2008 and 2015 of more than a factor of two was derived for air masses originating from the seep field direction. View Full-Text
Keywords: methane; Santa Barbara seeps; remote sensing; in situ; MAMAP; Coal Oil Point methane; Santa Barbara seeps; remote sensing; in situ; MAMAP; Coal Oil Point
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Krings, T.; Leifer, I.; Krautwurst, S.; Gerilowski, K.; Horstjann, M.; Bovensmann, H.; Buchwitz, M.; Burrows, J.P.; Kolyer, R.W.; Jonsson, H.H.; Fladeland, M.M. Reduced Methane Emissions from Santa Barbara Marine Seeps. Remote Sens. 2017, 9, 1162.

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