Oxygen A-band
Fast reconstruction of hyperspectral radiative transfer simulations by using small spectral subsets: application to the oxygen A band
... the oxygen A band showed that about 30 spectral channels are sufficient to reproduce the full hyper- spectral data in a space spanned by 15 principal ...
9
Information content of OCO-2 oxygen A-band channels for retrieving marine liquid cloud properties
... Abstract. Information content analysis is used to select channels for a marine liquid cloud retrieval using the high- spectral-resolution oxygen A-band instrument on NASA’s Orbiting Carbon Observatory-2 ...
14
Application of oxygen A-band equivalent width to disambiguate downwelling radiances for cloud optical depth measurement
... Although we customarily record the full spectral record spanning about 350–1000 nm, the TWST COD retrieval presently makes use of a sparse set of spectral bins de- composed into three spectral factors: the spectral ...
13
Error sources in the retrieval of aerosol information over bright surfaces from satellite measurements in the oxygen A band
... the oxygen A band is known to be challenging, often resulting in large ...the oxygen A band, and discusses its ...the oxygen A band from the GOME-2 instrument on board the ...
15
Improved information about the vertical location and extent of monolayer clouds from POLDER3 measurements in the oxygen A-band
... Rothman, L. S., Jacquemarta, D., Barbeb, A., Bennerc, D. C., Birkd, M., Browne, L., Carleerf, M., Jr., C. C., Chancea, K., Coud- erth, L., Danai, V., Devic, V., Flaudh, J.-M., Gamachej, R., Gold- mank, A., Hartmannh, ...
18
Retrieving aerosol height from the oxygen A band: a fast forward operator and sensitivity study concerning spectral resolution, instrumental noise, and surface inhomogeneity
... In the near and not too distant future, hyperspectral mea- surements within the oxygen A band will become widely available from instruments such as OCO2 (Haring et al., 2004; Crisp and Johnson, 2005), ...
13
Cloud geometry from oxygen-A-band observations through an aircraft side window
... the oxygen-A-band method is mainly caused by the strength of the typical 3-D effects not considered in the re- ...from oxygen-A-band data seems ...
15
Cloud information content analysis of multi-angular measurements in the oxygen A-band: application to 3MI and MSPI
... Abstract. Information content analyses on cloud top al- titude (CTOP) and geometrical thickness (CGT) from multi-angular A-band measurements in the case of mono- layer homogeneous clouds are conducted. In the ...
19
A sensitivity study on the retrieval of aerosol vertical profiles using the oxygen A-band
... Frankenberg et al. (2012) showed that the information con- tent for both aerosols and trace gases can be improved by adding off-nadir viewing angles in hyperspectral measure- ments. They also investigated the dependence ...
17
A high-resolution oxygen A-band spectrometer (HABS) and its radiation closure
... of oxygen A-band inversions and util- ity, we developed a high-resolution oxygen A-band spec- trometer (HABS), and deployed it at Howard University Beltsville site during the NASA Discover ...
12
Retrieval of aerosol parameters from the oxygen A band in the presence of chlorophyll fluorescence
... Fluorescence emissions are a slowly varying function of wavelength. There are basically two mechanisms for re- trieving fluorescence emissions from space: the filling-in of Fraunhofer lines and the filling-in of ...
16
Tropospheric aerosol profile information from high-resolution oxygen A-band measurements from space
... Error of LAOD (top panel) and vertical resolution (middle panel) as a function of pressure for the aerosol profile retrieval for scenario A for surface albedos of 0.05 and 0.5 and SZAs o[r] ...
16
Marine liquid cloud geometric thickness retrieved from OCO-2's oxygen A-band spectrometer
... confident. The highest quality optical depth retrievals agree with those from the Moderate Resolution Imaging Spec- troradiometer (MODIS) with discrepancies smaller than the MODIS-reported uncertainty. Retrieved ...
21
Evaluation of SCIAMACHY Oxygen A band cloud heights using Cloudnet measurements
... at 756–770 nm (Rozanov and Kokhanovsky, 2004). The for- ward model simulates the reflectance at top of atmosphere (TOA), assuming clouds to be a single plane-parallel scat- tering layer and including multiple scattering ...
20
Sensing Behavior Of CuO-Doped SnO2 Thick Film Sensor For H2S Detection
... When the sensor is exposed to reducing gases at elevated temperature, the O − adsorbents react with the gases and release the e -s to the conduction band. Consequently, the depth of the space-charge layer ...
7
Biochemical requirements for singlet oxygen production by purified human myeloperoxidase
... The myeloperoxidase (MPO)-hydrogen peroxide (H2O2)-halide systems were found to produce chemiluminescence at 1,268 nm, a characteristic emission band for singlet oxygen (1O2). The emission was enhanced by a ...
8
Soft X-ray emission lines from a relativistic accretion disk in MCG-6-30-15 and Mrk 766
... in oxygen, are eventually pumped into O viii Lyα, the true intrinsic emission measures may be lower by as much as a factor of ∼ 3 compared to those estimated in ...
7
ANTI MICROBIAL AND ANTI TUBERCULAR ACTIVITY EVALUATION OF NEWLY SYNTHESIZED ZINC COMPLEXES OF AMINOTHIOPHENE SCHIFF BASES
... CONCLUSION: Zinc (II) metal complexes from Schiff bases were synthesized and characterized. Schiff base ligand coordinated to central zinc atom through carboxylic oxygen, azomethine nitrogen and phenolic ...
7
The effects of microstructure and surface chemistry on the response of gas-sensitive resistors
... conducts via ‘polaron hopping’. In such mixed valence oxides, the element that is represented by two oxidation states has a non-integral charge (the net charge is not a whole number and there is transfer o f charge ...
247
Gas-Sensing Properties of Cr doped Lithium Ferrites based Sensor for Environmental Monitoring
... gas concentration was used for both the gases. Operating temperature was maintained at 250˚C for ethanol and LPG respectively. In the case of lithium ferrite, the optimum response is observed in 30-40 sec and recovery at ...
15