validation of satellite aerosol optical depth by aats-14 during icartt 2004
DESCRIPTION
Validation of Satellite Aerosol Optical Depth by AATS-14 during ICARTT 2004. NASA Ames Airborne Sunphotometer Team Presented by John Livingston SRI International. Jetstream-31 (J31) in INTEX-ITCT. Table of J31/satellite coincidences during ITCT 2004. ICARTT 2004 AATS-14/MODIS Coincidences. - PowerPoint PPT PresentationTRANSCRIPT
J31 Data Workshop 9-10Mar05
Validation of Satellite Aerosol Optical Depth by AATS-14
during ICARTT 2004
NASA Ames Airborne Sunphotometer Team
Presented by John Livingston
SRI International
Jetstream-31 (J31) in INTEX-ITCT
DATE Satellite Overflight Time lower left corner upper right corner comments UT [hhmm] lat N, lon W [decimal deg] lat N, lon W [decimal deg] MODIS MISR
12-Jul Aqua 1813 42.95, 69.9 43.1, 69.0 yes15-Jul Aqua 1705 43.1, 69.9 43.2, 69.3 no16-Jul Aqua 1748 42.4, 69.0 43.0, 68.0 yes17-Jul Terra 1513 42.7, 70.7 43.25, 70.0 MISR Path 7; too far east of J31 track yes no20-Jul Terra 1543 43.05, 69.8 43.3, 69.4 MISR local mode; MODIS unusable yes/bad yes21-Jul Aqua 1806 43.0, 70.5 43.6, 69.5 yes22-Jul Terra 1531 42.4, 70.2 43.1, 69.4 MISR local mode yes yes23-Jul Aqua 1754 42.6, 70.2 43.1, 69.95 yes29-Jul Terra 1537 42.5,70.5 43.3 69.5 MISR local mode; MODIS unusable yes/bad yes29-Jul Aqua 1718 42.5,70.5 43.3 69.5 MODIS unusable yes/bad31-Jul Terra 1525 no MISR; limited AATS data at low alt no no31-Jul Aqua 1705 cirrus no2-Aug Terra 1513 42.3, 70.5 43.2, 69.2 MISR Path 7; too far east of J31 track yes no7-Aug Terra 1531 41.6, 68.75 42.8, 67.5 MISR (but no LM); MODIS unusable yes/bad yes8-Aug Aqua 1754 42.65, 70.25 42.85, 67.75 yes
analysis status
Table of J31/satellite coincidences during ITCT 2004
ICARTT 2004 AATS-14/MODIS Coincidences
• Eight cases w/MODIS data
• July 12, 16, 17, 21, 22, 23; August 2, 8
ICARTT 2004 AATS-14/MISR Coincidences
• Four events
• July 20, 22, 29; August 7
MISR 20 July
• Moderate AODs
• Limited MISR data
J31 descent
J31 ascent
Terra overpass: 1543 UT
Note: V16 MISR AODs > 0 are available only within blue boxshown in earlier slide. These AATS-14 data are means for allAATS data points shown in previous slide.
MISR V16
Note: These AATS-14 means only include those data points within the MISR blue box, as shown in earlier slide.
MISR V16
J31 descent
J31 ascent
MISR 29 July
• Moderate/large AODs
• AOD gradient
J31 ascent
J31 descent
Terra overpass: 1537 UT
AOD gradient (AATS)
MISR V15
MISR V16
J31 ascent
J31 descent
MISR 7 Aug
• Small AODs
• AOD gradient
• DC-8 rendezvous
J31 ascent
Terra overpass: 1531 UT
small AO
D gradient (AATS)
MISR V15
MISR V16
MISR 22 July
• Moderate/large AODs
• small AOD gradient along J31 flight trackbut outside of MISR grid cell locations
J31 ascent
J31 descent
MISR grids
Terra overpass: 1531 UT
small AOD gradient (AATS)
MISR V15
MISR V16
22 July: AATS/MISR/MODIS
small AO
D gradient (AATS)
MODIS
ICARTT 2004 AATS-14/MODIS Coincidences
• Eight cases w/MODIS data
• July 12, 16, 17, 21, 22, 23; August 2, 8
• MISR data also available for 22 July case
MODIS 12 July
• Moderate AODs
• AOD gradient along portion of J31 track
flight direction
J31 descent
J31 ascent
AOD gradient (AATS)
MODIS 16 July
• Moderate AODs
• Limited AATS retrievals
MODIS 17 July
• Small AODs
• Limited near surface AATS AOD retrievals
MODIS 21 July
• Moderate AODs
• AOD gradient along portion of J31 track
flight direction
J31 descent
J31 ascent
AO
D g
radi
ent (
AA
TS)
MODIS 23 July
• AOD gradient
• Large maximum AODs
flight direction
AOD gradient (AATS)
MODIS 2 Aug
• Large AOD gradient
• Moderate maximum AODs
flight direction
J31 descent
AOD gradient (AATS)
flight direction
MODIS 8 Aug
• J31 short longitudinal transect
• Small AODs
• AOD gradient near eastern end of track