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ACE-2 North Atlantic Regional Aerosol Characterization Experiment

June 16 - July 25, 1997

 

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ALPS99 Poster

 AEROSOL CHARACTERIZATION EXPERIMENT -2. ACE-2 LOGO

 Clear Column Closure Studies of Urban Marine and Mineral-dust Aerosols Using Aircraft, Ship, Satellite and Ground-based Measurements in ACE-2

 IMAGE OF PELICAN AIRCRAFT

 FIGURE 1 PELICAN ACE-2 PAYLOAD AND CONFIGURATION

Fig.1 Pelican ACE-2 payload and configuration

 FIGURE 5 AEROSOL OPTICAL DEPTH (LAMBDA=0.63 MICROMETERS) RETRIEVED FROM AVHRR RADIANCES ON JULY 17,1997

Fig.5 AOD = .63 micrometers retreived from AVHRR radiances on 07/17/97

 FIGURE 11 AOD(LAMBDA=0.63 MICROMETERS) RETRIEVED FROM AVHRR RADIANCES ON JULY 10,1997

Fig.11 AOD=.63 micrometers retrieved from AVHRR radiances on 07/10/97

DESCRIPTION OF MEASUREMENTS AND COMPARISONS

 FIGURE 6: (LEFT PANEL) COMPARISON BETWEEN AEROSOL OPTICAL DEPTHS MEASURED BY AATS-14 AND DERIVED FROM AVHRR RADIANCES FOR A CASE WITH AN ELEVATED DUST LAYER. (RIGHT PANEL) VERTICAL PROFILES OF AEROSOL EXTINCTION COEFFICIENT FOR THE CASE IN THE LEFT PANEL

 FIGURE 12 (LEFT PANEL) COMPARISON BETWEEN AOD MEASURED BY AATS-14 ON PELICAN AND AATS-6 ON THE RV VODYANITSKIY AND DERIVED FROM AVHRR RADIANCES FOR A CASE WITH NO ELEVATED DUST LAYER PRESENT. (RIGHT PANEL) VERTICAL PROFILES OF AEROSOL EXTINCTION COEFFICIENT FOR THE CASE IN THE LEFT PANEL

Fig.12a comparison between AOD measured by AATS 6 &14 Fig12b. Vertical profiles of Aerosol extinction coefficient for Fig12a

FIGURE 7. COMPARISON OF MARINE BOUNDARY LAYER SIZE DISTRIBUTIONS FROM IN=SITU MEASUREMENTS AND FROM INVERTED AATS-14 SPECTRAL EXTINCTION MEASUREMENTS 

Fig7 comparison of marine boundary layer size distributions from in-situ measurements and from inverted AATS-14 spectral extinction measurements

 FIG.13 WATER VAPOR DENSITY AND COLUMNAR WATER VAPOR PROFILE RETRIEVED FROM AATS-14 AND UW-PH MEASUREMENTS DURING PELICAN FLIGHT TFT7 ON JULY 10,1997 AND FROM A RADIO SOUNDING LAUNCHED FROM THE RV VODYANITSKIY ALSO SHOWN COLUMNAR WATER VAPOR MEASURED BY AATS-6 ON THE RV

Fig13 Water vapor density and columnar water vapor profile retrieved from AATS-14 and UW-PH measurements during Pelican flight

FIG2 AOD AND EXTICTION PROFILE RETRIEVED FROM AATS-14 (LAMBDA=525 NM) SIZE DISTRIBUTION MEASUREMENTS (CALTECH, LAMBDA=525 NM) UW-PH NEPHELOMETERS (LAMBDA=550NM) DURING PELICAN FLIGHT TF15 ON JULY 8, 1997

 Fig2 AOD and extinction profile retrieved from AATS-14, size distribution measurements

 FIG8 COMPARISON OF DUST SIZE DISTRIBUTIONS FROM IN-SITU MEASUREMENTS AND FROM INVERTED AATS-14 SPECTRAL EXTINCTION MEASUREMENTS

 FIG14. MEAND AND STANDARD DEVIATION OF THE PHASE FUNCTION CALCULATED FRIM IN-SITU SIZE DISTRIBUTION MEASUREMENTS

 SPECTRAL AOD FOR THE MARINE BOUNDARY LAYER DURING PELICAN FLIGHT TF15 ON JULY 8, 1997

Fig 3 Spectral AOD for the marine boundary layer during Pelican flight on 07/08/97

 CUMULATIVE AOD PROFILE FROM LIDAR (LAMBDA=524NM) AND AATS-14 AOD PROFILE (LAMBDA=524.8NM) ALSO SHOWN CIMEL AOD AT THE LOCATION OF THE MPL AND THE MFR AOD AT NEARBY TEIDE AT 3570M A.S.L.(FOR BOTH INSTRUMENTS THE AODS ARE INTERPOLATED TO (LAMBDA 524NM)

Fig 9 Cumulative AOD profile from Lidar and AATS-14 AOD profile

 CONCLUSION

REFERENCES

SPECTRAL AOD FOR PART OF THE DUST LAYER DURINGPELICAN FLIGHT TF15 ON JULY 8, 1997

Fig 4 Spectral AOD for part of the Dust layer during Pelican flight on 07/08/97

 AIRBORNE MEASUREMENT OF SPECTRAL AOD FROM AATS-14 COMPARED TO GROUND-BASED SPECTRAL AOD FROM MFR ON TEIDE (3570M) WHEN PELICAN WAS FLYING AT CORRESPONDING ALTITUDE DURING FLIGHT 20 ON JULY 17,1997

Fig 10 Airborne measurement of spectral AOD from AATS-14 compared to ground -based spectral AOD from MFR

 

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