02/04/2009 University of Manchester ADIENT meeting 5 – Gareth Thomas, Maria Frontoso 1 WP 1.3: Satellite data in support of ADIENT aircraft flights Gareth

02/04/2009 University of 02/04/2009 University of ManchesterManchester

ADIENT meeting 5 – Gareth Thomas, Maria ADIENT meeting 5 – Gareth Thomas, Maria FrontosoFrontoso

11

WP 1.3:WP 1.3:Satellite data in support of Satellite data in support of

ADIENT aircraft flightsADIENT aircraft flights

Gareth ThomasGareth Thomas

Don GraingerDon Grainger

02/10/2008 University of Reading ADIENT meeting 4 – Gareth Thomas, Andy Sayer 2

What we said we’d doWhat we said we’d doFour aspects to this work:Four aspects to this work:

1.1. Providing maps of predicted satellite Providing maps of predicted satellite overpasses for flight planningoverpasses for flight planning

2.2. Providing satellite data on a NRT basis Providing satellite data on a NRT basis during flight campaignsduring flight campaigns

3.3. Provide download links to a range of Provide download links to a range of satellite data corresponding to each ADIENT satellite data corresponding to each ADIENT flightflight

4.4. Creating a tool which extracts satellite data Creating a tool which extracts satellite data for a given set of locations and timesfor a given set of locations and times

What we’ve doneWhat we’ve done

1.1. Documents detailing the predicted overpass Documents detailing the predicted overpass times and locations have been created for times and locations have been created for November 2007November 2007 and and MarchMarch, April and May , April and May 2008.2008.

2.2. A website has been set up which A website has been set up which systematically provides aerosol properties systematically provides aerosol properties from AATSR and MERIS on a NRT basis, as from AATSR and MERIS on a NRT basis, as well as linking to MODIS quick-looks.well as linking to MODIS quick-looks.


What we’ve doneWhat we’ve done

1.1. Documents detailing the predicted overpass Documents detailing the predicted overpass times and locations have been created for times and locations have been created for November 2007November 2007 and and MarchMarch, April and May , April and May 2008.2008.

2.2. A website has been set up which A website has been set up which systematically provides aerosol properties systematically provides aerosol properties from AATSR and MERIS on a NRT basis, as from AATSR and MERIS on a NRT basis, as well as linking to MODIS quick-looks.well as linking to MODIS quick-looks.

3.3. Links to MODIS daily Level 3 and Level 2 data Links to MODIS daily Level 3 and Level 2 data are available on the web. AATSR and SEVIRI are available on the web. AATSR and SEVIRI will be added soon.will be added soon.

4.4. A prototype of the data extraction tool is A prototype of the data extraction tool is available for download.available for download.



MODIS L3 downloadMODIS L3 download

► For each flight there For each flight there are two links:are two links: One to the MODIS L3 One to the MODIS L3

Terra product Terra product directory (am directory (am overpass)overpass)

One to the MODIS L3 One to the MODIS L3 Aqua product directory Aqua product directory (pm overpass)(pm overpass)

► Each of these Each of these directories should directories should contain 1 file (Global contain 1 file (Global AOD at 1x1 degree)AOD at 1x1 degree)


http://www.atm.ox.ac.uk/project/adient/sat_data/modis_MOD08_D3_links.html

MODIS L2 downloadMODIS L2 download

► Again, links for both Again, links for both Terra and Aqua data.Terra and Aqua data.

► Download the text Download the text files and them files and them upload to the NASA upload to the NASA LAADS data LAADS data extractor.extractor.

► This will provide a This will provide a list of level 2 tiles for list of level 2 tiles for the day of interest.the day of interest.


http://www.atm.ox.ac.uk/project/adient/sat_data/modis_MOD04_L2_links.html

02/04/2009 University of 02/04/2009 University of ManchesterManchester

ADIENT meeting 5 – Gareth ThomasADIENT meeting 5 – Gareth Thomas 88

WP 4.2.2:WP 4.2.2:Regional analysis of satellite Regional analysis of satellite

and ground based dataand ground based data

Gareth ThomasGareth Thomas

Maria FrontosoMaria Frontoso

Don GraingerDon Grainger


Current workCurrent work► Mixing and matching datasets:Mixing and matching datasets:

GlobAEROSOLGlobAEROSOLSatellite products from (A)ATSR, SEVIRI & MERISSatellite products from (A)ATSR, SEVIRI & MERISGlobal, 1995-2007Global, 1995-2007

MODISMODISLevel 3 aerosolLevel 3 aerosolGlobal, 2000 onwardsGlobal, 2000 onwards

GlomapGlomapModel fields at approx. 2.8 degree resolutionModel fields at approx. 2.8 degree resolutionEurope only, 2004 (so far).Europe only, 2004 (so far).

AERONETAERONETGround based stationsGround based stationsApproximately 80 sites within “Europe”Approximately 80 sites within “Europe”

Progress thus farProgress thus far►Preliminary comparison of optical depths Preliminary comparison of optical depths

has been done:has been done: Monthly means calculated from both satellite Monthly means calculated from both satellite

and GLOMAP data.and GLOMAP data. Satellite measurements regridded onto the Satellite measurements regridded onto the

GLOMAP resolution on a daily basis.GLOMAP resolution on a daily basis. Only model data for which there is matching Only model data for which there is matching

satellite value included in the GLOMAP satellite value included in the GLOMAP average.average.

►Time series for grid cells containing Time series for grid cells containing AERONET stations also produced.AERONET stations also produced.



Note x3 difference

October2004


October2004

AERONET time seriesAERONET time series


Southern France

Purple: GLOMAPBlack: AERONETBlue: MODIS (L3)Green: AATSR (GlobAER)Red: SEVIRI (GlobAER)



Spanish Atlantic coast




Northern Germany




Belarus




Mid-Mediterranean


What next...What next...► Why does GLOMAP show such low optical Why does GLOMAP show such low optical

depths?depths? The run did not include ‘dust’, but this is unlikely to The run did not include ‘dust’, but this is unlikely to

account for the discrepancy seen.account for the discrepancy seen. How is AOD being calculated from the model?How is AOD being calculated from the model?

► Investigate other parametersInvestigate other parameters Aerosol size (effective radius, Angstrom exponent, Aerosol size (effective radius, Angstrom exponent,

ORAC size distributions).ORAC size distributions). Aerosol composition/”type”.Aerosol composition/”type”.

► Look at coincidences with aircraft dataLook at coincidences with aircraft data How close is the model and satellite to what actually How close is the model and satellite to what actually

seen (size/composition)seen (size/composition)

► Expand the comparison to a global domain.Expand the comparison to a global domain.02/10/2008 University of Reading ADIENT meeting 4 – Gareth Thomas, Andy Sayer 18