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000189986 1001_ $$0P:(DE-Juel1)129121$$aGriessbach, S.$$b0$$eCorresponding Author
000189986 245__ $$aInfrared limb emission measurements of aerosol in the troposphere and stratosphere
000189986 260__ $$aKatlenburg-Lindau$$bCopernicus$$c2015
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000189986 520__ $$aAltitude resolved aerosol detection in the upper troposphere and lower stratosphere (UTLS) is a challenging task for remote sensing instruments. Here, we introduce a new method for detecting aerosol in the UTLS based on infrared limb emission measurements. The method applies an improved aerosol-cloud-index that indicates infrared limb spectra affected by aerosol and ice clouds. For the discrimination between aerosol and ice clouds we developed a new method based on brightness temperature difference correlations. The discrimination thresholds for the new method were derived from radiative transfer simulations (including scattering) and Michelson Interferometer for Passive Atmospheric Sounding (MIPAS)/Envisat measurements obtained in 2011. The method not only reliably separates aerosol from ice clouds, but also provides characteristic yet overlapping correlation patterns for volcanic ash and sulfate aerosol. We demonstrate the value of the new approach for volcanic ash and sulfate aerosol originating from the Grímsvötn (Iceland), Puyehue-Cordón Caulle (Chile) and Nabro (Eritrea) eruptions by comparing with Atmospheric Infrared Sounder (AIRS) volcanic ash and SO2 measurements.
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000189986 7001_ $$0P:(DE-Juel1)129125$$aHoffmann, Lars$$b1
000189986 7001_ $$0P:(DE-Juel1)129154$$aSpang, R.$$b2
000189986 7001_ $$0P:(DE-Juel1)129170$$avon Hobe, M.$$b3
000189986 7001_ $$0P:(DE-Juel1)129138$$aMüller, Rolf$$b4
000189986 7001_ $$0P:(DE-Juel1)129145$$aRiese, M.$$b5
000189986 773__ $$0PERI:(DE-600)2507817-3$$a10.5194/amtd-8-4379-2015$$gVol. 8, no. 4, p. 4379 - 4412$$n4$$p4379 - 4412$$tAtmospheric measurement techniques discussions$$v8$$x1867-8610$$y2015
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