HIRDLS Validaton Update

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HIRDLS Validaton Update

• D. Kinnison and J. Gille
• dkin_at_ucar.edu
• 303-497-1469

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Pre-Launch HIRDLS Global Mode Sampling Pattern
(12-hour period)
HIRDLS lat-lon profile locations Temperature on
16 km surface Example 12h global scan-mode Swath
width 6 profiles 2 global maps per day _at_ 5 x 4
Satellite Movement
Additional profile inserted in global mode scan
along orbit track Doubles resolution along orbit
plane
HIRDLS swath
Along track cross-section for orbit plane Central
curtain plot (1 of 6 in a swath) Temperature (8
- 30 km) Spacing of profiles along track 230 km
for orbit plane and 460 km outside
Courtesy of Alyn Lambert
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HIRDLS Reduced Aperture Measurements

• HIRDLS will be measuring at -47 degrees to the
  orbit track
• The HIRDLS tangent points in this schematic are
  the red xs.
• MLS tangent points will be along the orbit path.

x
x
x
Azimuth -47
x
Aura Orbit Path
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HIRDLS Daily Coverage ( 7000 profiles 65km
spacing along orbit track)
80?N
64?S
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Comparison of HIRDLS tangent locations to MLS
HIRDLS Azimuth -47 from the orbit plane
Night
Day
During the day part of the orbit, HIRDLS is
trailing MLS by one orbit. During night the
coincidence is much better and HIRDLS leads MLS
by one orbit.
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Comparison of HIRDLS tangent locations to TES
HIRDLS Azimuth -47 from the orbit plane
Night
Day
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Initial Validation efforts will emphasize species
that have large signals and relatively little
interference from other species.
T, O3, H2O, Aerosols, NO2, CFC-12
More difficult species to retrieve
CH4, N2O, N2O5, ClONO2, HNO3, CFC-11
Science mode since 21 January 2005.
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HIRDLS FYO5 Validation Needs.

• Temperature
• GMAO Data
• Radiance validation
• Incorporate in retrieval procedure (LOS
  gradients)
• Aura MLS GPS TIMED-SABER
• PAVE (McGee AROTAL Lidar MTP)

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Use GMAO (T, O3, and H2O) for loss of Cross Track
LOS gradients information
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HIRDLS FYO5 Validation Needs.

• Temperature
• GMAO Data
• Radiance validation
• Incorporate in retrieval procedure (LOS
  gradients)
• Aura MLS GPS TIMED-SABER
• PAVE (McGee AROTAL Lidar MTP)

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PAVE Flight on 7 February 2005
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PAVE Flight on 7 February 2005
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PAVE Flight on 7 February 2005
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HIRDLS FYO5 Validation Needs.

• Ozone
• Aura MLS with Trajectory modeling.
• POAMIII (NH), SAGEIII,II, and HALOE
• PAVE (Browell, McGee Lidars, and Avery in situ)
• Ozone sondes
• H2O vapor
• Aura MLS
• POAMIII (NH), SAGEIII, and HALOE
• H2O sondes
• TCSP?
• NO2
• POAMIII (NH), HALOE (modeling to compare local
  time coincidence)
• OSIRIS and MIPAS (campaign mode), ACE.
• Heavy lift balloons (Sept 2005)

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HIRDLS FYO5 Validation Needs.

• CFC-12
• MIPAS and ACE
• AVE (WAS or PANTHER)
• Heavy lift Balloons (Sept 2005)
• Aerosol, Cirrus (and Cloud Height)
• Lose SH PSCs cold NH conditions needed.
• PAVE (Browell, McGee lidars)
• Ground-based lidars (NDSC sites)
• AVE (size distributions composition)
• MODIS (thin Cirrus channel at 1.38um)
• Other HIRDLS Products
• N2O, HNO3 gt Aura - MLS
• CH4 gt HALOE, Aura-TES
• CFC-11 gt (similar to CFC-12)
• ClONO2, N2O5 gt MIPAS, ACE, Heavy lift balloons.

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The End