Abstract

We present the results of a comparison of the total extinction altitude profiles measured at the same time and at same location by the ORA (Occultation Radiometer) and Stratospheric Aerosol and Gas Experiment II solar occultation experiments at three different wavelengths. A series of 25 events for which the grazing points of both experiments lie within a 2° window has been analyzed. The mean relative differences observed over the altitude range 15–45 km are -8.4%, 1.6%, and 3% for the three channels (0.385, 0.6, and 1.02 μm). Some systematic degradation occurs below 20 km (as the result of signal saturation and possible cloud interference) and above 40 km (low absorption). The fair general agreement between the extinction profiles obtained by two different instruments enhances our confidence in the results of the ORA experiment and of the recently developed vertical inversion algorithm applied to real data.

© 1998 Optical Society of America

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  1. E. Arijs, D. Nevejans, D. Fussen, P. Frederick, E. Van Ransbeek, F. W. Taylor, S. B. Calcutt, S. T. Werrett, C. L. Heppelwhite, T. M. Pritchard, I. Burchell, C. D. Rodgers, “The ORA occultation radiometer on EURECA,” Adv. Space Res. 16, 833–836 (1995).
  2. L. E. Mauldin, N. H. Zaun, M. P. McCormick, J. H. Guy, W. R. Vaughn, “Stratospheric aerosol and gas experiment II instrument: a functional description,” Opt. Eng. 24, 307–312 (1985).
  3. W. P. Chu, M. P. McCormick, J. Lenoble, C. Brogniez, P. Pruvost, “SAGE II inversion algorithm,” J. Geophys. Res. 94, 8839–8351 (1989).
    [CrossRef]
  4. J. Lenoble, “Presentation of the European Correlative Experiment program for SAGE II,” J. Geophys. Res. 94, 8395–8398 (1989).
    [CrossRef]
  5. G. K. Yue, M. P. McCormick, W. P. Chu, P. Wang, M. T. Osborn, “Comparative studies of aerosol extinction measurement made by the SAM II and SAGE II satellite experiments,” J. Geophys. Res. 94, 8412–8424 (1989).
    [CrossRef]
  6. D. Fussen, “NOPE: a new inversion method for the total attenuation profile retrieval in atmospheric tomography from space-borne instruments,” in Atmospheric Sensing and Modeling II, R. P. Santer, ed., Proc. SPIE2582, 80–87 (1995).
    [CrossRef]
  7. D. Fussen, E. Arijs, D. Nevejans, F. Leclere, “Tomography of the Earth’s atmosphere by the space-borne ORA radiometer: spatial inversion algorithm,” J. Geophys. Res. 102, 4357–4365 (1997).
    [CrossRef]
  8. G. K. Yue, “Wavelength dependence of aerosol extinction coefficient for stratospheric aerosols,” J. Climate Appl. Meteorol. 25, 1775–1779 (1986).
    [CrossRef]
  9. W. P. Chu, M. P. McCormick, “Inversion of stratospheric aerosol and gaseous constituents from spacecraft solar extinction data in the 0.38–1.0-micron wavelength region,” Appl. Opt. 18, 1404–1413 (1979).
    [CrossRef] [PubMed]
  10. D. M. Murphy, D. W. Fahey, M. H. Proffitt, S. C. Liu, K. R. Chan, C. S. Eubank, S. R. Kawa, K. K. Kelly, “Reactive nitrogen and its correlation with ozone in the lower stratosphere and the upper troposphere,” J. Geophys. Res. 98, 8751–8773 (1993).
    [CrossRef]
  11. C. D. Rodgers, “Characterization and error analysis of profiles retrieved from remote sounding measurements,” J. Geophys. Res. 95, 5587–5595 (1990).
    [CrossRef]

1997 (1)

D. Fussen, E. Arijs, D. Nevejans, F. Leclere, “Tomography of the Earth’s atmosphere by the space-borne ORA radiometer: spatial inversion algorithm,” J. Geophys. Res. 102, 4357–4365 (1997).
[CrossRef]

1995 (1)

E. Arijs, D. Nevejans, D. Fussen, P. Frederick, E. Van Ransbeek, F. W. Taylor, S. B. Calcutt, S. T. Werrett, C. L. Heppelwhite, T. M. Pritchard, I. Burchell, C. D. Rodgers, “The ORA occultation radiometer on EURECA,” Adv. Space Res. 16, 833–836 (1995).

1993 (1)

D. M. Murphy, D. W. Fahey, M. H. Proffitt, S. C. Liu, K. R. Chan, C. S. Eubank, S. R. Kawa, K. K. Kelly, “Reactive nitrogen and its correlation with ozone in the lower stratosphere and the upper troposphere,” J. Geophys. Res. 98, 8751–8773 (1993).
[CrossRef]

1990 (1)

C. D. Rodgers, “Characterization and error analysis of profiles retrieved from remote sounding measurements,” J. Geophys. Res. 95, 5587–5595 (1990).
[CrossRef]

1989 (3)

W. P. Chu, M. P. McCormick, J. Lenoble, C. Brogniez, P. Pruvost, “SAGE II inversion algorithm,” J. Geophys. Res. 94, 8839–8351 (1989).
[CrossRef]

J. Lenoble, “Presentation of the European Correlative Experiment program for SAGE II,” J. Geophys. Res. 94, 8395–8398 (1989).
[CrossRef]

G. K. Yue, M. P. McCormick, W. P. Chu, P. Wang, M. T. Osborn, “Comparative studies of aerosol extinction measurement made by the SAM II and SAGE II satellite experiments,” J. Geophys. Res. 94, 8412–8424 (1989).
[CrossRef]

1986 (1)

G. K. Yue, “Wavelength dependence of aerosol extinction coefficient for stratospheric aerosols,” J. Climate Appl. Meteorol. 25, 1775–1779 (1986).
[CrossRef]

1985 (1)

L. E. Mauldin, N. H. Zaun, M. P. McCormick, J. H. Guy, W. R. Vaughn, “Stratospheric aerosol and gas experiment II instrument: a functional description,” Opt. Eng. 24, 307–312 (1985).

1979 (1)

Arijs, E.

D. Fussen, E. Arijs, D. Nevejans, F. Leclere, “Tomography of the Earth’s atmosphere by the space-borne ORA radiometer: spatial inversion algorithm,” J. Geophys. Res. 102, 4357–4365 (1997).
[CrossRef]

E. Arijs, D. Nevejans, D. Fussen, P. Frederick, E. Van Ransbeek, F. W. Taylor, S. B. Calcutt, S. T. Werrett, C. L. Heppelwhite, T. M. Pritchard, I. Burchell, C. D. Rodgers, “The ORA occultation radiometer on EURECA,” Adv. Space Res. 16, 833–836 (1995).

Brogniez, C.

W. P. Chu, M. P. McCormick, J. Lenoble, C. Brogniez, P. Pruvost, “SAGE II inversion algorithm,” J. Geophys. Res. 94, 8839–8351 (1989).
[CrossRef]

Burchell, I.

E. Arijs, D. Nevejans, D. Fussen, P. Frederick, E. Van Ransbeek, F. W. Taylor, S. B. Calcutt, S. T. Werrett, C. L. Heppelwhite, T. M. Pritchard, I. Burchell, C. D. Rodgers, “The ORA occultation radiometer on EURECA,” Adv. Space Res. 16, 833–836 (1995).

Calcutt, S. B.

E. Arijs, D. Nevejans, D. Fussen, P. Frederick, E. Van Ransbeek, F. W. Taylor, S. B. Calcutt, S. T. Werrett, C. L. Heppelwhite, T. M. Pritchard, I. Burchell, C. D. Rodgers, “The ORA occultation radiometer on EURECA,” Adv. Space Res. 16, 833–836 (1995).

Chan, K. R.

D. M. Murphy, D. W. Fahey, M. H. Proffitt, S. C. Liu, K. R. Chan, C. S. Eubank, S. R. Kawa, K. K. Kelly, “Reactive nitrogen and its correlation with ozone in the lower stratosphere and the upper troposphere,” J. Geophys. Res. 98, 8751–8773 (1993).
[CrossRef]

Chu, W. P.

W. P. Chu, M. P. McCormick, J. Lenoble, C. Brogniez, P. Pruvost, “SAGE II inversion algorithm,” J. Geophys. Res. 94, 8839–8351 (1989).
[CrossRef]

G. K. Yue, M. P. McCormick, W. P. Chu, P. Wang, M. T. Osborn, “Comparative studies of aerosol extinction measurement made by the SAM II and SAGE II satellite experiments,” J. Geophys. Res. 94, 8412–8424 (1989).
[CrossRef]

W. P. Chu, M. P. McCormick, “Inversion of stratospheric aerosol and gaseous constituents from spacecraft solar extinction data in the 0.38–1.0-micron wavelength region,” Appl. Opt. 18, 1404–1413 (1979).
[CrossRef] [PubMed]

Eubank, C. S.

D. M. Murphy, D. W. Fahey, M. H. Proffitt, S. C. Liu, K. R. Chan, C. S. Eubank, S. R. Kawa, K. K. Kelly, “Reactive nitrogen and its correlation with ozone in the lower stratosphere and the upper troposphere,” J. Geophys. Res. 98, 8751–8773 (1993).
[CrossRef]

Fahey, D. W.

D. M. Murphy, D. W. Fahey, M. H. Proffitt, S. C. Liu, K. R. Chan, C. S. Eubank, S. R. Kawa, K. K. Kelly, “Reactive nitrogen and its correlation with ozone in the lower stratosphere and the upper troposphere,” J. Geophys. Res. 98, 8751–8773 (1993).
[CrossRef]

Frederick, P.

E. Arijs, D. Nevejans, D. Fussen, P. Frederick, E. Van Ransbeek, F. W. Taylor, S. B. Calcutt, S. T. Werrett, C. L. Heppelwhite, T. M. Pritchard, I. Burchell, C. D. Rodgers, “The ORA occultation radiometer on EURECA,” Adv. Space Res. 16, 833–836 (1995).

Fussen, D.

D. Fussen, E. Arijs, D. Nevejans, F. Leclere, “Tomography of the Earth’s atmosphere by the space-borne ORA radiometer: spatial inversion algorithm,” J. Geophys. Res. 102, 4357–4365 (1997).
[CrossRef]

E. Arijs, D. Nevejans, D. Fussen, P. Frederick, E. Van Ransbeek, F. W. Taylor, S. B. Calcutt, S. T. Werrett, C. L. Heppelwhite, T. M. Pritchard, I. Burchell, C. D. Rodgers, “The ORA occultation radiometer on EURECA,” Adv. Space Res. 16, 833–836 (1995).

D. Fussen, “NOPE: a new inversion method for the total attenuation profile retrieval in atmospheric tomography from space-borne instruments,” in Atmospheric Sensing and Modeling II, R. P. Santer, ed., Proc. SPIE2582, 80–87 (1995).
[CrossRef]

Guy, J. H.

L. E. Mauldin, N. H. Zaun, M. P. McCormick, J. H. Guy, W. R. Vaughn, “Stratospheric aerosol and gas experiment II instrument: a functional description,” Opt. Eng. 24, 307–312 (1985).

Heppelwhite, C. L.

E. Arijs, D. Nevejans, D. Fussen, P. Frederick, E. Van Ransbeek, F. W. Taylor, S. B. Calcutt, S. T. Werrett, C. L. Heppelwhite, T. M. Pritchard, I. Burchell, C. D. Rodgers, “The ORA occultation radiometer on EURECA,” Adv. Space Res. 16, 833–836 (1995).

Kawa, S. R.

D. M. Murphy, D. W. Fahey, M. H. Proffitt, S. C. Liu, K. R. Chan, C. S. Eubank, S. R. Kawa, K. K. Kelly, “Reactive nitrogen and its correlation with ozone in the lower stratosphere and the upper troposphere,” J. Geophys. Res. 98, 8751–8773 (1993).
[CrossRef]

Kelly, K. K.

D. M. Murphy, D. W. Fahey, M. H. Proffitt, S. C. Liu, K. R. Chan, C. S. Eubank, S. R. Kawa, K. K. Kelly, “Reactive nitrogen and its correlation with ozone in the lower stratosphere and the upper troposphere,” J. Geophys. Res. 98, 8751–8773 (1993).
[CrossRef]

Leclere, F.

D. Fussen, E. Arijs, D. Nevejans, F. Leclere, “Tomography of the Earth’s atmosphere by the space-borne ORA radiometer: spatial inversion algorithm,” J. Geophys. Res. 102, 4357–4365 (1997).
[CrossRef]

Lenoble, J.

W. P. Chu, M. P. McCormick, J. Lenoble, C. Brogniez, P. Pruvost, “SAGE II inversion algorithm,” J. Geophys. Res. 94, 8839–8351 (1989).
[CrossRef]

J. Lenoble, “Presentation of the European Correlative Experiment program for SAGE II,” J. Geophys. Res. 94, 8395–8398 (1989).
[CrossRef]

Liu, S. C.

D. M. Murphy, D. W. Fahey, M. H. Proffitt, S. C. Liu, K. R. Chan, C. S. Eubank, S. R. Kawa, K. K. Kelly, “Reactive nitrogen and its correlation with ozone in the lower stratosphere and the upper troposphere,” J. Geophys. Res. 98, 8751–8773 (1993).
[CrossRef]

Mauldin, L. E.

L. E. Mauldin, N. H. Zaun, M. P. McCormick, J. H. Guy, W. R. Vaughn, “Stratospheric aerosol and gas experiment II instrument: a functional description,” Opt. Eng. 24, 307–312 (1985).

McCormick, M. P.

W. P. Chu, M. P. McCormick, J. Lenoble, C. Brogniez, P. Pruvost, “SAGE II inversion algorithm,” J. Geophys. Res. 94, 8839–8351 (1989).
[CrossRef]

G. K. Yue, M. P. McCormick, W. P. Chu, P. Wang, M. T. Osborn, “Comparative studies of aerosol extinction measurement made by the SAM II and SAGE II satellite experiments,” J. Geophys. Res. 94, 8412–8424 (1989).
[CrossRef]

L. E. Mauldin, N. H. Zaun, M. P. McCormick, J. H. Guy, W. R. Vaughn, “Stratospheric aerosol and gas experiment II instrument: a functional description,” Opt. Eng. 24, 307–312 (1985).

W. P. Chu, M. P. McCormick, “Inversion of stratospheric aerosol and gaseous constituents from spacecraft solar extinction data in the 0.38–1.0-micron wavelength region,” Appl. Opt. 18, 1404–1413 (1979).
[CrossRef] [PubMed]

Murphy, D. M.

D. M. Murphy, D. W. Fahey, M. H. Proffitt, S. C. Liu, K. R. Chan, C. S. Eubank, S. R. Kawa, K. K. Kelly, “Reactive nitrogen and its correlation with ozone in the lower stratosphere and the upper troposphere,” J. Geophys. Res. 98, 8751–8773 (1993).
[CrossRef]

Nevejans, D.

D. Fussen, E. Arijs, D. Nevejans, F. Leclere, “Tomography of the Earth’s atmosphere by the space-borne ORA radiometer: spatial inversion algorithm,” J. Geophys. Res. 102, 4357–4365 (1997).
[CrossRef]

E. Arijs, D. Nevejans, D. Fussen, P. Frederick, E. Van Ransbeek, F. W. Taylor, S. B. Calcutt, S. T. Werrett, C. L. Heppelwhite, T. M. Pritchard, I. Burchell, C. D. Rodgers, “The ORA occultation radiometer on EURECA,” Adv. Space Res. 16, 833–836 (1995).

Osborn, M. T.

G. K. Yue, M. P. McCormick, W. P. Chu, P. Wang, M. T. Osborn, “Comparative studies of aerosol extinction measurement made by the SAM II and SAGE II satellite experiments,” J. Geophys. Res. 94, 8412–8424 (1989).
[CrossRef]

Pritchard, T. M.

E. Arijs, D. Nevejans, D. Fussen, P. Frederick, E. Van Ransbeek, F. W. Taylor, S. B. Calcutt, S. T. Werrett, C. L. Heppelwhite, T. M. Pritchard, I. Burchell, C. D. Rodgers, “The ORA occultation radiometer on EURECA,” Adv. Space Res. 16, 833–836 (1995).

Proffitt, M. H.

D. M. Murphy, D. W. Fahey, M. H. Proffitt, S. C. Liu, K. R. Chan, C. S. Eubank, S. R. Kawa, K. K. Kelly, “Reactive nitrogen and its correlation with ozone in the lower stratosphere and the upper troposphere,” J. Geophys. Res. 98, 8751–8773 (1993).
[CrossRef]

Pruvost, P.

W. P. Chu, M. P. McCormick, J. Lenoble, C. Brogniez, P. Pruvost, “SAGE II inversion algorithm,” J. Geophys. Res. 94, 8839–8351 (1989).
[CrossRef]

Rodgers, C. D.

E. Arijs, D. Nevejans, D. Fussen, P. Frederick, E. Van Ransbeek, F. W. Taylor, S. B. Calcutt, S. T. Werrett, C. L. Heppelwhite, T. M. Pritchard, I. Burchell, C. D. Rodgers, “The ORA occultation radiometer on EURECA,” Adv. Space Res. 16, 833–836 (1995).

C. D. Rodgers, “Characterization and error analysis of profiles retrieved from remote sounding measurements,” J. Geophys. Res. 95, 5587–5595 (1990).
[CrossRef]

Taylor, F. W.

E. Arijs, D. Nevejans, D. Fussen, P. Frederick, E. Van Ransbeek, F. W. Taylor, S. B. Calcutt, S. T. Werrett, C. L. Heppelwhite, T. M. Pritchard, I. Burchell, C. D. Rodgers, “The ORA occultation radiometer on EURECA,” Adv. Space Res. 16, 833–836 (1995).

Van Ransbeek, E.

E. Arijs, D. Nevejans, D. Fussen, P. Frederick, E. Van Ransbeek, F. W. Taylor, S. B. Calcutt, S. T. Werrett, C. L. Heppelwhite, T. M. Pritchard, I. Burchell, C. D. Rodgers, “The ORA occultation radiometer on EURECA,” Adv. Space Res. 16, 833–836 (1995).

Vaughn, W. R.

L. E. Mauldin, N. H. Zaun, M. P. McCormick, J. H. Guy, W. R. Vaughn, “Stratospheric aerosol and gas experiment II instrument: a functional description,” Opt. Eng. 24, 307–312 (1985).

Wang, P.

G. K. Yue, M. P. McCormick, W. P. Chu, P. Wang, M. T. Osborn, “Comparative studies of aerosol extinction measurement made by the SAM II and SAGE II satellite experiments,” J. Geophys. Res. 94, 8412–8424 (1989).
[CrossRef]

Werrett, S. T.

E. Arijs, D. Nevejans, D. Fussen, P. Frederick, E. Van Ransbeek, F. W. Taylor, S. B. Calcutt, S. T. Werrett, C. L. Heppelwhite, T. M. Pritchard, I. Burchell, C. D. Rodgers, “The ORA occultation radiometer on EURECA,” Adv. Space Res. 16, 833–836 (1995).

Yue, G. K.

G. K. Yue, M. P. McCormick, W. P. Chu, P. Wang, M. T. Osborn, “Comparative studies of aerosol extinction measurement made by the SAM II and SAGE II satellite experiments,” J. Geophys. Res. 94, 8412–8424 (1989).
[CrossRef]

G. K. Yue, “Wavelength dependence of aerosol extinction coefficient for stratospheric aerosols,” J. Climate Appl. Meteorol. 25, 1775–1779 (1986).
[CrossRef]

Zaun, N. H.

L. E. Mauldin, N. H. Zaun, M. P. McCormick, J. H. Guy, W. R. Vaughn, “Stratospheric aerosol and gas experiment II instrument: a functional description,” Opt. Eng. 24, 307–312 (1985).

Adv. Space Res. (1)

E. Arijs, D. Nevejans, D. Fussen, P. Frederick, E. Van Ransbeek, F. W. Taylor, S. B. Calcutt, S. T. Werrett, C. L. Heppelwhite, T. M. Pritchard, I. Burchell, C. D. Rodgers, “The ORA occultation radiometer on EURECA,” Adv. Space Res. 16, 833–836 (1995).

Appl. Opt. (1)

J. Climate Appl. Meteorol. (1)

G. K. Yue, “Wavelength dependence of aerosol extinction coefficient for stratospheric aerosols,” J. Climate Appl. Meteorol. 25, 1775–1779 (1986).
[CrossRef]

J. Geophys. Res. (6)

D. Fussen, E. Arijs, D. Nevejans, F. Leclere, “Tomography of the Earth’s atmosphere by the space-borne ORA radiometer: spatial inversion algorithm,” J. Geophys. Res. 102, 4357–4365 (1997).
[CrossRef]

W. P. Chu, M. P. McCormick, J. Lenoble, C. Brogniez, P. Pruvost, “SAGE II inversion algorithm,” J. Geophys. Res. 94, 8839–8351 (1989).
[CrossRef]

J. Lenoble, “Presentation of the European Correlative Experiment program for SAGE II,” J. Geophys. Res. 94, 8395–8398 (1989).
[CrossRef]

G. K. Yue, M. P. McCormick, W. P. Chu, P. Wang, M. T. Osborn, “Comparative studies of aerosol extinction measurement made by the SAM II and SAGE II satellite experiments,” J. Geophys. Res. 94, 8412–8424 (1989).
[CrossRef]

D. M. Murphy, D. W. Fahey, M. H. Proffitt, S. C. Liu, K. R. Chan, C. S. Eubank, S. R. Kawa, K. K. Kelly, “Reactive nitrogen and its correlation with ozone in the lower stratosphere and the upper troposphere,” J. Geophys. Res. 98, 8751–8773 (1993).
[CrossRef]

C. D. Rodgers, “Characterization and error analysis of profiles retrieved from remote sounding measurements,” J. Geophys. Res. 95, 5587–5595 (1990).
[CrossRef]

Opt. Eng. (1)

L. E. Mauldin, N. H. Zaun, M. P. McCormick, J. H. Guy, W. R. Vaughn, “Stratospheric aerosol and gas experiment II instrument: a functional description,” Opt. Eng. 24, 307–312 (1985).

Other (1)

D. Fussen, “NOPE: a new inversion method for the total attenuation profile retrieval in atmospheric tomography from space-borne instruments,” in Atmospheric Sensing and Modeling II, R. P. Santer, ed., Proc. SPIE2582, 80–87 (1995).
[CrossRef]

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Figures (6)

Fig. 1
Fig. 1

Time evolution of the ORA and SAGE grazing site latitudes. The orbit plane inclination (28°) of the ORA is responsible for the smaller amplitude. Any curve crossing between the two experiments is not necessarily favorable owing to a possible longitude difference. The set of the 25 closest events is shown for 4 time periods (large gray circles).

Fig. 2
Fig. 2

Comparison of extinction profiles for the set of the closest 25 events at λ = 0.385 μm. Top, averaged total extinction profiles for ORA and SAGE together with the climatological Rayleigh component. The shaded area corresponds to the standard deviation around the ORA mean values (for clarity, only the ORA error bars are given). Bottom, scatter plot associated with the averaged distributions. The scattering of the points reflects both the differences in measured values and the natural variability. The slope is indicative of the mean correlation.

Fig. 3
Fig. 3

Same as Fig. 2 but for λ = 0.6 μm.

Fig. 4
Fig. 4

Same as Fig. 2 but for λ = 1.02 μm.

Fig. 5
Fig. 5

Comparison of three total extinction profiles at λ = 1.020 μm: ORA, SAGE, and Rayleigh (air density). Error bars are given for both ORA and SAGE values.

Fig. 6
Fig. 6

Same as Fig. 2 for λ = 0.385 μm but for c = 3 μm-1 (see text). The agreement above 20 km is now satisfactory, whereas the ORA algorithm seems to miss the aerosol peak.

Tables (2)

Tables Icon

Table 1 Spatiotemporal Coordinates of the Three Events Compared in Fig. 5

Tables Icon

Table 2 Mean Relative Differences (in %) between ORA and SAGE Experiments Computed as (ORA-SAGE)/SAGE × 100 for the 25 Coincident Events

Equations (7)

Equations on this page are rendered with MathJax. Learn more.

T λ h = exp - s 1 s 2   β λ z s h d s ,
β λ = β λ Rayleigh + β λ aerosol + β λ O 3 + ,
S λ h = Δ Ω   W Ω T λ h Ω d Ω .
S λ h T λ h .
β z = β 0 z i = 0 n   α i P i z ,
β λ = β 1.013 exp c λ - 1.013 c - 2.4   μ m - 1 .
Δ t = 6   min. ,     Δ L = 2 ° ,     Δ l = 2 ° .

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