[PDF] Top 20 Cloud detection and classification based on MAX-DOAS observations
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Cloud detection and classification based on MAX-DOAS observations
... Roscoe, H. K., Van Roozendael, M., Fayt, C., du Piesanie, A., Abuhassan, N., Adams, C., Akrami, M., Cede, A., Chong, J., Clémer, K., Friess, U., Gil Ojeda, M., Goutail, F., Graves, R., Griesfeller, A., Grossmann, K., ... See full document
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A method for cloud detection and opacity classification based on ground based sky imagery
... Figure 1 showed that AOD significantly affects the RBR, but this is not accounted for in the CSL. By dynamically cor- recting the CSL for aerosol content, more consistent thresh- olds can be chosen to distinguish between ... See full document
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Absolute calibration of the colour index and O 4absorption derived from Multi AXis (MAX-)DOAS measurements and their application to a standardised cloud classification algorithm
... their detection, especially because for zenith observations, clouds always lead to a de- crease of the CI compared to clear-sky conditions (if the CI is defined with the intensity at the shorter wavelength ... See full document
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Simultaneous observations by sky radiometer and MAX-DOAS for characterization of biomass burning plumes in central Thailand in January–April 2016
... The sky radiometer (POM-02; Prede Co., Ltd., Tokyo, Japan), a sun–sky photometer measuring direct and diffuse solar irradiances, is the main instrument of the international ground-based remote-sensing network ... See full document
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MAX-DOAS observations of the total atmospheric water vapour column and comparison with independent observations
... Fig. 6. Illustration of the different processing steps to correct for atmospheric radiative effects for a clear day (left) and cloudy day (right): the two upper rows show the retrieved VCDs of H 2 O and O 4 , for which ... See full document
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Determination of aerosol properties from MAX-DOAS observations of the Ring effect
... ground based observations of scattered light (Wagner et ...for MAX- DOAS measurements on two cloud free days with very dif- ferent aerosol ... See full document
18
MAX-DOAS observations of aerosols, formaldehyde and nitrogen dioxide in the Beijing area: comparison of two profile retrieval approaches
... the detection limit, or when the assumptions that are made about fixed parameters (or cloud- free conditions) do not ...under cloud-free conditions, and if assumptions about fixed parameters are not ... See full document
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MAX-DOAS NO 2observations over Guangzhou, China; ground-based and satellite comparisons
... the MAX-DOAS ...only observations characterized by cloud frac- tion (CF) ≤ 30 % were ...the MAX-DOAS measure- ments recorded within 1 h centered at the satellite overpass ... See full document
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Evaluation of MAX-DOAS aerosol retrievals by coincident observations using CRDS, lidar, and sky radiometer in Tsukuba, Japan
... lidar observations at Tsukuba for the period of 5–18 October 2010 are shown in ...between MAX-DOAS and the ground-based humidified nephelometer (Zieger et ...km, MAX-DOAS has a ... See full document
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Automatic cloud classification of whole sky images
... two cloud cameras constructed to enable cost-effective continuous sky observations for research as- sociated with radiative transfer at the Leibniz Institute of Marine Sciences at the University of Kiel ... See full document
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Eight-component retrievals from ground-based MAX-DOAS observations
... other MAX- DOAS retrievals in the study of Zieger et ...of MAX-DOAS AECs all showed that the correlation was reasonably high (R 2 > ...but MAX-DOAS AECs tended to be ... See full document
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Cloud and aerosol classification for 2.5 years of MAX-DOAS observations in Wuxi (China) and comparison to independent data sets
... e.g., based on look-up tables or optimal estimation, are applied to derive tropospheric profiles of trace gases and aerosols from the measured SCDs ...2015). Cloud-free sky is an ideal condition for the ... See full document
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Ground-based direct-sun DOAS and airborne MAX-DOAS measurements of the collision-induced oxygen complex, O 2O absorption with significant pressure and temperature differences
... Figure 3. Measured 1SCDs at 360 nm (left panel) and 477 nm (right panel) vs. modeled SCD ∗ (O 2 O 2 ) for a pure Rayleigh atmosphere and with aerosol profile using fitting parameters outlined in Table 3. Upper panel ... See full document
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Car MAX-DOAS measurements around entire cities: quantification of NO xemissions from the cities of Mannheim and Ludwigshafen(Germany)
... studies based on zenith scattered sun light (elevation angle of 90 ◦ ), we use a MAX-DOAS instrument mounted on a car, which observes scattered sun light under differ- ent elevation angles (here 45 ◦ ... See full document
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Intercomparison of aerosol extinction profiles retrieved from MAX-DOAS measurements
... is based on the optimal estimation method to solve the nonlinear in- version ...developed based on its predecessor MCARaTS (the Monte Carlo Atmospheric Radiative Transfer Simula- tor; Iwabuchi, ... See full document
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High-resolution mapping of the NO 2spatial distribution over Belgian urban areas based on airborne APEX remote sensing
... atmosphere based on a priori information on all parameters that affect the light path, ...temperature, cloud cover, absorber and aerosol vertical ...a cloud retrieval ... See full document
24
Blind source separation for robot audition using fixed HRTF beamforming
... highest energies (instead of selecting N beams as in the previous paragraph). Then, we build over all the selected steering directions a histogram that corresponds to their overall number of occurrence (cf . Figure 7). ... See full document
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MAX-DOAS retrieval of aerosol extinction properties in Madrid, Spain
... the MAX-DOAS-retrieved ...automatically cloud-cleared, the hourly MAX-DOAS-retrieved AODs, which were calculated from the retrieved aerosol extinction profiles in the HEIPRO al- ... See full document
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Tropospheric nitrogen dioxide column retrieval from ground-based zenith–sky DOAS observations
... Piters, A. J. M., Boersma, K. F., Kroon, M., Hains, J. C., Van Roozendael, M., Wittrock, F., Abuhassan, N., Adams, C., Akrami, M., Allaart, M. A. F., Apituley, A., Beirle, S., Bergw- erff, J. B., Berkhout, A. J. C., ... See full document
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From pixels to patches: a cloud classification method based on a bag of micro-structures
... manual cloud classification takes cloud shape as a basic factor, together with shape development and in- terior micro-structure of the ...automatic cloud classification, while Heinle et ...of ... See full document
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