AMFIC on AIRSAT- a web data base for hosting and easy retrieval of

atmosphericdata from satellites

• Konstantinos Kourtidis1, Aristeidis Georgoulias1, Evangelos Kosmidis2, Fanis Despotakis2, and Panayiotis Symeonidis3

1School of Engineering, Demokritus University of Thrace, Dept. of Environmental Engineering, Xanthi, Greece 2DOTSOFT S.A., Thessaloniki, Greece 3Draxis Environmental Technologies LtD., Thessaloniki, Greece

Rationale• Satellite instruments produce large amounts data. • There is an increased demand for satellite data not only from

specialized users but also from researchers and public institutions for research, management, information and education purposes.

• Many of these potential users lack the expertise to extract the data they need from the formats offered by the repositories.

• The AMFIC web database has been developed to address the need of these users for fast, easy access of atmospheric composition data.

• The main idea behind the AMFIC database (http://www.amfic.satellite-earth-simulator.com/), is to offer overpass columnar ascii files with atmospheric composition data for every spot within any region of interest through a set of interactive maps.

Product availabilityFour different products from SCIAMACHY/ENVISAT @three different resolution modes (10x10deg, 5x5deg and 1x1deg)

• WFM-DOAS v1.0 CH4 dry air columnar data (XCH4) for 2003 and 2004, • WFM-DOAS v0.6 CO total column data for 2003 and 2004, DOAS v1.0.3 • SO2 total column data for the period 2005-2007 and TM4NO2A version

1.10 • NO2 tropospheric and total column data for the period 2003-2008 are

available.

Database capable of hosting any other atmospheric composition product (level2 or level3) from any satellite instrument (e.g. OMI, GOME-2, GOSAT, MODIS, etc).

Example

Daily single pixel swath NO2 tropospheric column measurements from SCIAMACHY assigned to a 1ox1o grid cell covering the

greater Thrace region where the Democritus University is located (red square)

Flowchart of the methodology used for the analysis of various datasets

Original data

Daily or granule HDF/HDF-EOS/netCDF files

CH4, CO2 or CO *.was files

Daily or monthly ascii fileswith columnar (lat/lon) data

Define grid dimensions

IDL (extract selected parameters)

FORTRAN (gridding)

All the datasets Level-2 MODIS dataset

IDL

0.1ox0.1o gridded dataset

One columnar (timeseries) ascii for each cellincluding all the measurements centered in it

Original data

Daily or granule HDF/HDF-EOS/netCDF files

CH4, CO2 or CO *.was files

Daily or monthly ascii fileswith columnar (lat/lon) data

Define grid dimensions

IDL (extract selected parameters)

Original data

Daily or granule HDF/HDF-EOS/netCDF files

CH4, CO2 or CO *.was files

Daily or monthly ascii fileswith columnar (lat/lon) data

Define grid dimensions

IDL (extract selected parameters)

FORTRAN (gridding)

All the datasets Level-2 MODIS dataset

IDL

0.1ox0.1o gridded dataset

One columnar (timeseries) ascii for each cellincluding all the measurements centered in it

FORTRAN (gridding)

All the datasets Level-2 MODIS dataset

IDL

0.1ox0.1o gridded dataset

One columnar (timeseries) ascii for each cellincluding all the measurements centered in it

Database short tour

AMFIC-WSDB FRONT data maps showing the general XCH4 patterns, standard deviation and number of months with available measurements over the

region of China for 2003.

AMFIC-WSDB FRONT data file including the annual XCH4 levels, standard deviation and number of months with available measurements over the

region of China for 2003.

FRONTFRONT

BACKBACK

AMFIC-WSDB interactive map. The selected grid cell becomes grey.

AMFIC-WSDB BACK data columnar ascii files with all the XCH4 values in 2003 for the grid cell centered in (36.5oN, 100.5oE).

AMFIC-WSDB BACK data columnar ascii files with the monthly mean XCH4 standard deviation and number of months with available measurements in 2003 for the grid cell

centered in (36.5oN, 100.5oE).

AMFIC-WSDB BACK data graph with all the XCH4 single pixel values, the monthly mean, the standard deviation and number of months with available measurements in 2003

for the grid cell centered in (36.5oN, 100.5oE).

The AMFIC-WSDB through a short demo projectLocation of the stations selected for the short demo project which shows the

functionality of the AMFIC-WSDB.

Seasonal variability of the SCIAMACHY XCH4, AIRS 206.25, 306.75 and 407.25 mbar pressure level CH4 vmr and NOAA CH4 flask measurements. The summer

peaks are indicated by a colored rectangular.

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Main advantages of the database:

• Allows a wider public to have direct access to satellite observations that they are either dispersed or not in a user-friendly format.

• Allows the use of parallel satellite measurements of different parameters due to their common spatial and temporal resolution.

• Allows the easy use of data from people interested in data analysis in conjunction with models but also for users who wish to compare surface observations with the corresponding satellite.

• Data are suitable even for educational and informational purposes due to the interactive manner in which the system works.

Satellite Earth simulator-AIRSATSatellite Earth simulator-AIRSAThttp://www.satellite-earth-simulator.com/http://www.satellite-earth-simulator.com/

Satellite Data SourcesSatellite Data Sources• TOMS (Earth Probe TOMS)TOMS (Earth Probe TOMS)

• SCIAMACHY (ENVISAT)SCIAMACHY (ENVISAT)

• GOME (ERS-2)GOME (ERS-2)

• MODIS (AQUA)MODIS (AQUA)

Meteorological Data SourceMeteorological Data Source• NCEP/NCAR Reanalysis Project NCEP/NCAR Reanalysis Project

Meteorological parametersMeteorological parameters• TemperatureTemperature• HumidityHumidity• PressurePressure• Wind speedWind speed• Precipitation Precipitation

Atmospheric dataAtmospheric data • Ozone vertical columnOzone vertical column• NONO22 vertical column vertical column• Aerosol Optical Thickness over oceanAerosol Optical Thickness over ocean• Cloud Optical Thickness Cloud Optical Thickness • Cloud Top Temperature Cloud Top Temperature • Optical Depth Land and OceanOptical Depth Land and Ocean• Atmospheric Water Vapour Atmospheric Water Vapour

Ocean dataOcean data• ChlorophyllChlorophyll• Sea surface temperatureSea surface temperature,, day day//nightnight

An ExampleAn Example::Data from ICSU World Data Center for Remote Sensing of the Data from ICSU World Data Center for Remote Sensing of the Atmosphere http://wdc.dlr.de Atmosphere http://wdc.dlr.de

geographical areageographical area

data setdata set

time periodtime period

(Spectral(Spectral Harmonic Analysis Harmonic Analysis applied on applied on NASA NASA EP EP TOMS Level 2 dataTOMS Level 2 data))

daily data in csv ascii formatdaily data in csv ascii format(1(1oox1x1oo analysis) analysis)

daily mapsdaily maps

start animationstart animation

select coordinatesselect coordinates

time series for Xanthi [41.133time series for Xanthi [41.133ooN, 24.883N, 24.883ooE] E] graph & csv ascii formatgraph & csv ascii format

animationanimation

http://www.amfic.satellite-earth-simulator.com

See also:

http://www.satellite-earth-simulator.com/