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With Giovanni and a few mouse clicks, one can easily obtain information on the atmosphere around the world.

There is need to learn data formats to retrieve and process data.

You can try various combinations of parameters measured by different instruments.

All the statistical analysis is done via a regular web browser.

http://giovanni.gsfc.nasa.gov/

Caution: Giovanni is a constantly evolving data exploration tool!

GES-DISC Interactive Online Visualization ANd aNalysis Infrastructure (Giovanni)

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GiovanniGiovanni homepage homepage

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Giovanni Instances

Giovanni Instances

What is Giovanni?

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Area Plot Time Series Model Output

Profile Cross-Section Correlations Column Densities

CALIOP CALIPSO

CloudSat

MODIS Terra

SeaWiFS

TRMM

HALOE UARS

TOMS EP, N7

Data InputsData Inputs

MLS Aura

OMI Aura

AMSR-E Aqua

MISR Terra

MODIS Aqua

AIRS Aqua

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MERRA Models

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Giovanni CapabilitiesBasic (one-parameter): Area plot – averaged or accumulated over any data period for any rectangular area

(various map projections) Time plot – time series averaged over any rectangular area Hovmöller plots –longitude-time or latitude-time cross sections ASCII output – for all plot types (can be used with GIS apps, spreadsheets, etc.) Image animation – for area plot Vertical profiles Vertical cross-sections, zonal means

Beyond basics: Area plot - geographical intercomparison between two parameters Time plot - an X-Y time series plot of several parameters Scatter plot of parameters in selected area and time period Scatter plot of area averaged parameters - regional (i.e., spatially averaged) relationship

between two parameters Temporal correlation map - relationship between two parameters at each grid Temporal correlation of area averaged parameters - a single value of the correlation

coefficient of a pair of selected parameters Difference plots Anomaly plots Acquiring parameter and spatial subsets in a batch mode through Giovanni

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Satellite, Model, and Ground Satellite, Model, and Ground Based Data in GiovanniBased Data in Giovanni

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Precipitation Measurements

TRMMTRMM: Tropical Rainfall : Tropical Rainfall Measuring Mission (Dec 1997 - )Measuring Mission (Dec 1997 - )

A joint mission between NASA and the A joint mission between NASA and the Japan Aerospace Exploration Agency Japan Aerospace Exploration Agency (JAXA)(JAXA)

GPCP:GPCP: Global Precipitation Global Precipitation Climate Project (1979 - ) Climate Project (1979 - )

Multi-sensor merged precipitationMulti-sensor merged precipitation

SummerSummer

WinterWinter

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Air Temperatures Measurements AIRS/Aqua: AIRS/Aqua: Atmosphere InfraRed Sounder (May 2002 Atmosphere InfraRed Sounder (May 2002 -)-)

• Atmospheric temperature profilesAtmospheric temperature profiles• Surface air temperatureSurface air temperature• Tropopause temperatureTropopause temperature

MODIS/Aqua: MODIS/Aqua: Moderate Resolution Imaging Moderate Resolution Imaging Spectroradiometer (May 2002 -)Spectroradiometer (May 2002 -)

• temperature profile temperature profile

MLS/UARS: MMLS/UARS: Microwave icrowave LLimb imb SSounder (1991-1999)ounder (1991-1999)• upper tropospheric temperature upper tropospheric temperature

MLS/AuraMLS/Aura: Microwave Limb Sounder (MLS) (Aug 2004 : Microwave Limb Sounder (MLS) (Aug 2004 -)-)

• temperature profile temperature profile

HIRDLS/Aura:HIRDLS/Aura: High resolution Dynamic Limb Sounder High resolution Dynamic Limb Sounder (Jan 2005 -)(Jan 2005 -)

• temperature profiles temperature profiles

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Geopotential Height Measurements

AIRS/Aqua: AIRS/Aqua: Atmosphere InfraRed Atmosphere InfraRed Sounder (May 2002 -)Sounder (May 2002 -)

MLS/UARS:MLS/UARS: MMicrowave icrowave LLimb imb SSounder (1991-ounder (1991-1999)1999)

Nov 2008, 200 hPaNov 2008, 200 hPa

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Wind Measurements

QuikSCAT:QuikSCAT: “Quick” “Quick” Scatterometer (Jun 1999) Scatterometer (Jun 1999)

• sea surface wind velocity sea surface wind velocity • sea surface wind direction sea surface wind direction

WIND II/UARSWIND II/UARS: Wind Imaging : Wind Imaging Interferometer (1991-1997)Interferometer (1991-1997)

• upper atmosphere winds upper atmosphere winds (above 80km)(above 80km)

8/26-27/20058/26-27/2005

8/29-30/20058/29-30/2005

Winds and precipitation of Winds and precipitation of Hurricane KatrinaHurricane Katrina

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Atmospheric Water Vapor Measurements

AIRS/Aqua: AIRS/Aqua: Atmosphere InfraRed Sounder (May 2002 -)Atmosphere InfraRed Sounder (May 2002 -)• Total integrated water vaporTotal integrated water vapor• Precipitable waterPrecipitable water• Relative humidity, Water vapor mixing ratioRelative humidity, Water vapor mixing ratio

MLS/Aura: MLS/Aura: Microwave Limb SounderMicrowave Limb Sounder (Jul 2004 -)(Jul 2004 -)• mixing ratio of water vapor, Relative humiditymixing ratio of water vapor, Relative humidity• ice water contentice water content

MODIS/Terra, MODIS/AquaMODIS/Terra, MODIS/Aqua: Moderate Resolution Imaging : Moderate Resolution Imaging Spectroradiometer (Terra: Dec 1999 -, Aqua: May 2002 -)Spectroradiometer (Terra: Dec 1999 -, Aqua: May 2002 -)

• water vapor clear sky / cloudywater vapor clear sky / cloudy

TRMM:TRMM: Tropical Rainfall Measuring Mission (Dec 1997 - ) Tropical Rainfall Measuring Mission (Dec 1997 - )• precipitable waterprecipitable water

MLS/UARS: MMLS/UARS: Microwave icrowave LLimb imb SSounder (1991-1999)ounder (1991-1999)• upper troposphere relative humidity upper troposphere relative humidity

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Cloud Property Measurements AIRS/Aqua: AIRS/Aqua: Atmosphere InfraRed Sounder (May 2002)Atmosphere InfraRed Sounder (May 2002)

• Cloud fractionCloud fraction• Cloud top temperature and pressureCloud top temperature and pressure• Total integrated column cloud liquid waterTotal integrated column cloud liquid water

MODIS/Terra, MODIS/AquaMODIS/Terra, MODIS/Aqua: Moderate Resolution Imaging Spectroradiometer : Moderate Resolution Imaging Spectroradiometer (Terra: Dec 1999, Aqua: May 2002)(Terra: Dec 1999, Aqua: May 2002)

• cloud fraction , cloud optical depthcloud fraction , cloud optical depth• cloud top temperature/pressure cloud top temperature/pressure • cloud water path cloud water path

HIRDLS/Aura:HIRDLS/Aura: High resolution Dynamic Limb Sounder (Jan 2005) High resolution Dynamic Limb Sounder (Jan 2005)• cloud top pressurecloud top pressure

OMI/Aura: OMI/Aura: Ozone Monitoring Instruments (Jul 2004)Ozone Monitoring Instruments (Jul 2004)• Cloud pressure and cloud fractionCloud pressure and cloud fraction

MLS/AuraMLS/Aura: Microwave Limb Sounder (MLS) (Aug 2004): Microwave Limb Sounder (MLS) (Aug 2004)• ice water content ice water content

CloudSAT: CloudSAT: (Apr 2005)(Apr 2005)• Cloud vertical structure and property Cloud vertical structure and property

CALIPSO: CALIPSO: Cloud-Aerosol LIDAR and Infrared Pathfinder Satellite Observations (Apr Cloud-Aerosol LIDAR and Infrared Pathfinder Satellite Observations (Apr 2006)2006)

• cloud property cloud property

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Radiation Measurements

AIRS/Aqua: Atmosphere InfraRed Sounder (May 2002)

• Outgoing longwave radiation• Infrared surface emissivity

OMI/Aura: Ozone Monitoring Instruments (Jul 2004)

• UVB irradiance

SUSIM/UARS: Solar Ultraviolet Spectral Irradiance Monitor (1991-2005)

• ultraviolet radiation

SORCE: Solar Radiation and Climate Experiment (Feb 2003)

• total solar irradiance • solar spectral irradiance

AIRS OLR Nov 2008AIRS OLR Nov 2008

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Atmospheric Aerosols Measurements

OMI/Aura: Ozone Monitoring Instruments (Jul 2004)• Near-UV aerosol extinction and absorption optical depth• multi-wavelength aerosol optical depth

MODIS/Terra, MODIS/Aqua: Moderate Resolution Imaging Spectroradiometer (Terra: Dec 1999, Aqua: May 2002)

• aerosol optical depth at 550 nm• aerosol small mode fraction and optical depth• Angstrom 470/660 nm (land) and 550/865 nm (ocean)

TOMS: Total Ozone Mapping Spectroradiometer (1978-2003)

HALOE/UARS: HALogen Occultation Experiment (1991-2005)

MISR/Terra: Multi-angle Imaging SpectroRadiometer (Dec 1999)

SeaWiFS/OrbView-2: Sea-viewing Wide Field-of-view Sensor ( Sep 1997)

• aerosol optical thickness at 865 nm (ocean only)

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Ozone Measurements

TOMS: Total Ozone Mapping Spectrometer (1978-2003)

HALOE/UARS: HALogen Occutlation Experiment (1991-2005)

AIRS/Aqua: Atmosphere InfraRed Sounder (May 2002 -)

OMI/Aura: Ozone Monitoring Instrument (Jul 2004 -)

MLS/Aura: Microwave Limb Sounder (Jul 2004 - )

HIRDLS/Aura: High Resolution Dynamics Limb Sounder (Jul 2004 -)

• vertical profile of ozone

OMI OzoneOMI OzoneOct 2008Oct 2008

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Atmospheric Trace Gases Measurements

AIRS/Aqua: Atmosphere InfraRed Sounder (May 2002)• Total column CO• Effective CO volume mixing ratio for 7 layers• Effective CH4 volume mixing ratio for 3 layers

OMI/Aura: Ozone Monitoring Instruments (Jul 2004)• Total and tropospheric NO2• Total column SO2

MLS/Aura: Microwave Limb Sounder (Jul 2004)• mixing ratio of SO2, N2O, CO, Bro, CH3CN, CIO, …

HIRDLS/Aura: High Resolution Dynamics Limb Sounder (Jul 2004)•vertical profile of HNO3, CFC-11, CFC-12

HALOE/UARS: HALogen Occultation Experiment (1991-2005)• concentration methane, and nitrogen family

MLS/UARS: Microwave Limb Sounder (1991-1999)• chlorine monoxide, methyl cyanide, nitric acid, sulfur dioxide

More information about atmospheric composition and data:http://disc.gsfc.nasa.gov/acdisc/

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Ocean Measurements

SeaWiFS/OrbView-2: Sea-viewing Wide Field-of-view Sensor (Sep 1997 -)

• chlorophyll a concentration• diffuse attenuation coefficient at 490 nm• normalized water-leaving radiance at 412, 443, 490, 510, 555, 670nm

MODIS/Aqua: Moderate Resolution Imaging Spectroradiometer (Jul 2002 -)

• chlorophyll a concentration• diffuse attenuation coefficient at 490 nm• normalized water-leaving radiance at 412, 443, 488, 531, 551, 667nm• SST at 4, 11 micronSeaWiFS Chl SeaWiFS Chl aa

Aug-Sep Aug-Sep 2008

Land Surface and Cryosphere Data

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• Fire: MODIS/Terra, MODIS/Aqua

• Vegetation Index: MODIS/Terra, MODIS/Aqua

• Soil Moisture: AMSR-E

• Snow/Ice: NESDIS/IMS

Model Data

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MERRA: MODERN ERA RETROSPECTIVE-ANALYSIS FOR RESEARCH AND APPLICATIONS (1979 – 2008)

NASA reanalysis of atmospheric observations from using GEOS-5, focusing on hydrological cycle, resolution 1/2x2/3x72

GOCART: Goddard Chemistry Aerosol Radiation and Transport (2000-2006) simulates tropospheric aerosols

HemTAP: Intercomparisons of 40 Air Quality Models (2001-) (coming soon)

GLDAS: 4 Land Surface Models (1979 - )(coming soon)

Ozone mixing ratio at upper atmosphere Ozone mixing ratio at upper atmosphere 850 hPa (upper panel) in Dec 1999. 850 hPa (upper panel) in Dec 1999.

Zonal averaged vertical cross section map Zonal averaged vertical cross section map for air temperature in Jul 1999.for air temperature in Jul 1999.

Annual mean total surface precipitation of Annual mean total surface precipitation of year 1980 over northern America. year 1980 over northern America.

Wind vertical profiles over an area (80Wind vertical profiles over an area (80oo W – 85 W – 85ooW, W, 3333ooN-38N-38ooN) for U component (left panel) and V N) for U component (left panel) and V

component (right panel) in July 1980. component (right panel) in July 1980.

Northern hemisphere snow Northern hemisphere snow mass in Dec 1999mass in Dec 1999

Northern hemisphere snow Northern hemisphere snow mass in Dec 1999mass in Dec 1999

NASA MERRA Reanalysis ProductsNASA MERRA Reanalysis ProductsNASA MERRA Reanalysis ProductsNASA MERRA Reanalysis ProductsTwo new Giovanni instances supporting the recently released 30 years (1979-2008) Modern Era-Two new Giovanni instances supporting the recently released 30 years (1979-2008) Modern Era-

Retrospective-analysis for Research and Applications (MERRA), the NASA reanalysis for the Retrospective-analysis for Research and Applications (MERRA), the NASA reanalysis for the satellite era using GEOS-5, focusing on historical analyses of the hydrological cycle on a broad satellite era using GEOS-5, focusing on historical analyses of the hydrological cycle on a broad

range of weather and climate time scales. range of weather and climate time scales.

Two new Giovanni instances supporting the recently released 30 years (1979-2008) Modern Era-Two new Giovanni instances supporting the recently released 30 years (1979-2008) Modern Era-Retrospective-analysis for Research and Applications (MERRA), the NASA reanalysis for the Retrospective-analysis for Research and Applications (MERRA), the NASA reanalysis for the

satellite era using GEOS-5, focusing on historical analyses of the hydrological cycle on a broad satellite era using GEOS-5, focusing on historical analyses of the hydrological cycle on a broad range of weather and climate time scales. range of weather and climate time scales.

Cloud top pressure of Jan 1999Cloud top pressure of Jan 1999Cloud top pressure of Jan 1999Cloud top pressure of Jan 1999

Giovanni Provides Comparisons Of Giovanni Provides Comparisons Of Observations and ModelObservations and Model

Map of the Differences Map of the Differences between Model and between Model and

ObservationsObservations

Overlay of Contours of one parameter Overlay of Contours of one parameter over 2D colored map of another over 2D colored map of another

parameterparameter

The global map of July 2007 OMI The global map of July 2007 OMI Absorption Optical DepthAbsorption Optical Depth (on the left) (on the left) shows North African dust traveling westward over the Atlantic Ocean and shows North African dust traveling westward over the Atlantic Ocean and reaching Mexico and North America. It also shows smoke plumes from the reaching Mexico and North America. It also shows smoke plumes from the biomass burning from central Africa.biomass burning from central Africa.

The The Aerosol IndexAerosol Index map on the right shows westward transport of North map on the right shows westward transport of North African dust plumes with time. The dust plume which lifted above ground African dust plumes with time. The dust plume which lifted above ground on June 6 at 20 deg E reached Gulf of Mexico in two weeks. Aerosol index on June 6 at 20 deg E reached Gulf of Mexico in two weeks. Aerosol index is a very good indicator of absorbing aerosols such as smoke and dust. is a very good indicator of absorbing aerosols such as smoke and dust.

OMI Absorption Aerosol Optical Depth OMI Absorption Aerosol Optical Depth July 2007July 2007

DustDust

SmokeSmoke

Aerosol Index Time-Longitude Map & Aerosol Index Time-Longitude Map & Transport of African Dust West to Transport of African Dust West to

EastEast

Long-Range Transport of Smoke and Dust AerosolsLong-Range Transport of Smoke and Dust Aerosols

OMI can see UV absorbing Aerosols (dust & OMI can see UV absorbing Aerosols (dust & smoke) over cloudssmoke) over clouds

Asian dust plumes usually start in Asian dust plumes usually start in March and mainly build up over March and mainly build up over Taklamakan and Gobi deserts and Taklamakan and Gobi deserts and move eastwards, travel over the move eastwards, travel over the Pacific and reach the west coast of Pacific and reach the west coast of America. On the right, the map of America. On the right, the map of OMI Aerosol Index of April 7, 2005 OMI Aerosol Index of April 7, 2005 shows dust plume over East China, shows dust plume over East China, Korea and Japan.Korea and Japan.

On the left is shown Plumes of On the left is shown Plumes of smoke from a Canadian Boreal smoke from a Canadian Boreal Forest Fire for August 16, 2005Forest Fire for August 16, 2005

These Aerosol index maps have These Aerosol index maps have been overlaid on OMI retrieved been overlaid on OMI retrieved Cloud Cover to show that OMI can Cloud Cover to show that OMI can detect aerosols even over clouds.detect aerosols even over clouds.

Smokes Over cloud Smokes Over cloud

Dust Plumes Over Dust Plumes Over CloudCloud

AIRS Temperature AIRS Temperature (300mb)(300mb)

AIRS Relative HumidityAIRS Relative Humidity(Pressure-Latitude Cross Section)(Pressure-Latitude Cross Section)

OMI Ozone Column OMI Ozone Column AmountAmount

AIRS Ozone Column AIRS Ozone Column AmountAmount

IntrusionIntrusion

AIRS Relative HumidityAIRS Relative Humidity(Pressure-Time Cross Section)(Pressure-Time Cross Section)

AIRS TemperatureAIRS Temperature(Pressure-Time Cross Section)(Pressure-Time Cross Section)

Stratospheric Ozone Contribution to Stratospheric Ozone Contribution to Tropospheric OzoneTropospheric Ozone

Stratosphere-Troposphere Exchange shown Stratosphere-Troposphere Exchange shown using OMI & AIRS Data, March 26-28, 2005using OMI & AIRS Data, March 26-28, 2005

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Southern California Wildfires

OMI UV Aerosol Index AIRS Carbon Monoxide (CO)

MODIS Cloud Optical Thickness

MODIS Aerosol Mass over LandMODIS Small

Aerosol Fraction

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OMI Tropospheric NO2

Giovanni Data sources and their access protocolsGiovanni Data sources and their access protocols

Data sources Protocol Data

NASA GES DISC Local access AIRS, TRMM, OMI, MLS, HIRDLS

NASA MODIS DAAC FTP MODIS

NASA Ocean Color DAAC FTP SeaWiFS, MODIS

NASA Langley DAAC OPeNDAP CALIPSO, MISR, TES, CERES

NSIDC FTP AMSR-E

NOAA FTP Snow, Ice, NCEP

Univ. of Maryland FTP MODIS fire, NDVI

Colorado State Univ. FTP CloudSat

CIESIN Columbia University FTP Population

JPL FTP QuickSat

EPA via DataFed WCS PM2.5

Lille, France FTP Parasol

ESA FTP MERIS

Juelich, Germany FTP WCS HTAP

Paris, France OPeNDAP AEROCOM

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