Ramesh P. Singh Center for Earth Observing and Space Research, - - PowerPoint PPT Presentation

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Ramesh P. Singh Center for Earth Observing and Space Research, - - PowerPoint PPT Presentation

Jan 04, 2023 460 likes •746 views

Ramesh P. Singh Center for Earth Observing and Space Research, College of Science, George Mason University, Fairfax VA rsingh3@gmu.edu Indian Institute of Technology Kanpur, India Contributions from Anup K. Prasad Dongliang Sun

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Ramesh P. Singh Center for Earth Observing and Space Research, College of Science, George Mason University, Fairfax VA

rsingh3@gmu.edu Indian Institute of Technology Kanpur, India

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Contributions from

  • Anup K. Prasad
  • Dongliang Sun
  • Ritesh Gautam and C. Hsu (NASA)
  • Partha S. Bhattacharjee
  • Menas Kafatos
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Ground based CIMEL Sun- photometer

(April 3-12, 2005, MODIS Terra images)

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West-East AOD profile South-North AOD profile

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AERONET

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Ascending - Day

Dust storm and AIRS – Water Vapor Mixing Ratio (g/Kg)

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Descending - Night

AIRS – Water Vapor Mixing Ratio (g/Kg)

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AIRS – Relative Humidity (%)

Ascending - Day

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Descending - Night

AIRS – Relative Humidity (%)

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Ascending - Day

AIRS – Temperature (Kelvin)

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Descending - Night

AIRS – Temperature (Kelvin)

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Dust storms (May 7-8-9, 2005)

  • Contributions from
  • Anup K. Prasad
  • Ritesh Gautam
  • Dongliang Sun
  • Partha S. Bhattacharjee
  • Menas Kafatos

Himalayas IG plains Arabian Sea Middle East Sahara Desert Sources

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Path of Dust storm May 8, 2005

METEOSAT

IG plains Arabian Sea Arabian Sea Arabian Sea

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8 May 2005 9 May 2005

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AIRS profile

  • ver ocean

AIRS Water vapor (day) AIRS RH (day)

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Instantaneous shortwave top of the atmosphere forcing for 8th May 2005 based on CERES SSF Edition 2 data. High negative forcing in the regions of dust loading is quite evident.

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AIRS

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Maximum AOD (550nm Maximum AOD (550nm) Mean Water vapor (cm) NIR-CC Mean Water vapor (cm) NIR-CC

Dust storms: Association of water vapor with high AOD (Dust)

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AIRS

  • ver Himalayas during

dust storm

Delhi Kanpur

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Blues correspond to molecular scattering and weak aerosol scattering, aerosols generally show up as yellow/red/orange. Stronger cloud signals are plotted in gray scales, while weaker cloud returns are similar in strength to strong aerosol returns and coded in yellows and

  • reds. Just above the

surface, in a layer several kilometers deep, a layer

  • f aerosol particles is

shown in shades of

  • range and red.

Vertical Distribution of Aerosols

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Jan 6, 2001 Jan 21, 2001 Jan 28 MODIS IR THERMAL IMAGES NASA findings about the Thermal anomaly associated with Gujarat earthquake

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New AIRS products

OZONE CARBON MONOXIDE METHANE SULFUR DIOXIDE DUST AND AEROSOLS

VALIDATION AND COMPARISION WITH OTHER SENSOR RETRIEVALS!

  • OMI, TOMS, MOPITT
  • GPS water vapor
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Delhi 100 250 400 550 700 850 1000 50 75 100 125 150 175 200 225 250 275 300 CO (ppbv) Pressure (Hpa)

26-Mar 28-Mar 30-Mar 2-Apr 4-Apr 6-Apr 11-Apr

Kanpur 100 250 400 550 700 850 1000 50 75 100 125 150 175 200 225 250 275 300 CO (ppbv) Pressure (Hpa)

28-Mar 30-Mar 1-Apr 6-Apr 8-Apr 13-Apr

dust storm (April 2007) over the IG plains

AIRS CO ?

Delhi 100 250 400 550 700 850 1000 3 6 9 12 Water Vapour (g/kg) Pressure (Hpa)

1-Apr 2-Apr 5-Apr 7-Apr 9-Apr 10-Apr

Kanpur 100 250 400 550 700 850 1000 3 6 9 12 Water Vapor (g/kg) Pressure (Hpa)

1-Apr 3-Apr 5-Apr 7-Apr 8-Apr 9-Apr 10-Apr 11-Apr

MOPITT CO profile AIRS WV profile

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Thank you for your attention