ramesh p. singh - airs · ramesh p. singh center for earth observing and space research, college of...

Ramesh P. SinghCenter for Earth Observing and Space Research,

College of Science, George Mason University, FairfaxVA

rsingh3@gmu.edu

Indian Institute of TechnologyKanpur, India

Contributions from

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

Ground basedCIMELSun-photometer

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

West-East AOD profile

South-North AOD profile

AERONET

Ascending -Day

Dust storm andAIRS – Water

VaporMixing Ratio

(g/Kg)

Desce

nding -

Night

AIRS – Water Vapor Mixing Ratio (g/Kg)

AIRS – Relative Humidity (%)

Ascending -

Day

Descending -

Night

AIRS – Relative Humidity (%)

Ascending -

Day

AIRS – Temperature (Kelvin)

Descending -

Night

AIRS – Temperature (Kelvin)

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

• Contributions from

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

HimalayasIG plains

Arabian Sea

Middle East

Sahara Desert

Sources

Path of Duststorm

May 8, 2005

METEOSAT IG plains

Arabian Sea

Arabian Sea Arabian Sea

8 May 2005

9 May 2005

AIRS profileover ocean

AIRS Water vapor (day)

AIRS RH (day)

Instantaneousshortwave top of theatmosphere forcingfor 8th May 2005based on CERES SSFEdition 2 data. Highnegative forcing inthe regions of dustloading is quiteevident.

AIRS

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

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

AIRSover Himalayas during

dust storm

DelhiKanpur

Blues correspond tomolecular scattering andweak aerosol scattering,aerosols generally showup as yellow/red/orange.Stronger cloud signalsare plotted in grayscales, while weakercloud returns are similarin strength to strongaerosol returns andcoded in yellows andreds. Just above thesurface, in a layer severalkilometers deep, a layerof aerosol particles isshown in shades oforange and red.

Vertical Distribution of Aerosols

Jan 6, 2001 Jan 21, 2001

Jan 28

MODIS IR THERMALIMAGES

NASA findings about theThermal anomaly associatedwith Gujarat earthquake

New AIRSproducts

OZONECARBON MONOXIDEMETHANESULFUR DIOXIDEDUST AND AEROSOLS

VALIDATION ANDCOMPARISION WITH OTHERSENSOR RETRIEVALS!-OMI, TOMS, MOPITT- GPS water vapor

Delhi100

250

400

550

700

850

1000

50 75 100 125 150 175 200 225 250 275 300

CO (ppbv)

Pre

ssu

re (

Hp

a)

26-Mar

28-Mar

30-Mar

2-Apr

4-Apr

6-Apr

11-Apr

Kanpur100

250

400

550

700

850

1000

50 75 100 125 150 175 200 225 250 275 300

CO (ppbv)

Pre

ssu

re (

Hp

a)

28-Mar

30-Mar

1-Apr

6-Apr

8-Apr

13-Apr

dust storm (April 2007) over the IG plains

AIRS CO ?

Delhi100

250

400

550

700

850

1000

0 3 6 9 12Water Vapour (g/kg)

Pre

ssu

re (

Hp

a)

1-Apr

2-Apr

5-Apr

7-Apr

9-Apr

10-Apr

Kanpur100

250

400

550

700

850

1000

0 3 6 9 12

Water Vapor (g/kg)

Pre

ssu

re (

Hp

a)

1-Apr

3-Apr

5-Apr

7-Apr

8-Apr

9-Apr

10-Apr

11-Apr

MOPITT CO profile AIRS WV profile

Thank you for your attention