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[[Category: Rob Andrews Thesis]]
[[Category: Rob Andrews Thesis]]
{{QASpage}}
[[category:Queens Applied Sustainability Group Lab Protocols]]


=Introduction=
=Introduction=


NASA maintains programs which continuously monitor atmospheric parameters using remote sensing sattelites, a summary of the NASA Aerosol programs can be found [http://eosweb.larc.nasa.gov/HPDOCS/projects/aerosols.html here]. There are two insturments which are used, [http://terra.nasa.gov/About/MISR/index.php MISR] (Multi-angle Imaging SpectroRadiometer) and [http://terra.nasa.gov/About/MODIS/index.php MODIS] (Moderate-resolution Imaging Spectroradiometer). MODIS provides a wide band, low resolution spectroscopic view of the earths surface and can "see" the entire planet every 1-2 days. MISR has a higher resoulution, and "sees" the entire planet less frequently, but at a higher resoulution.  
NASA maintains programs which continuously monitor atmospheric parameters using remote sensing satellites, a summary of the NASA Aerosol programs can be found [http://eosweb.larc.nasa.gov/HPDOCS/projects/aerosols.html here]. There are two instruments which are used, [http://terra.nasa.gov/About/MISR/index.php MISR] (Multi-angle Imaging SpectroRadiometer) and [http://terra.nasa.gov/About/MODIS/index.php MODIS] (Moderate-resolution Imaging Spectroradiometer). MODIS provides a wide band, low resolution spectroscopic view of the earths surface and can "see" the entire planet every 1-2 days. MISR has a higher resolution, and "sees" the entire planet less frequently, but at a higher resolution.  


=Acessing the data=
=Accessing the data=


There are a variety of "levels" at which data can be retreived. Level 1 corresponds to raw, callibrated instrument data. Level 2 is data which has been derived from level 1 data, and consists of cloud and aerosol optical depth information. Level 3 corresponds to global concatonated datasets, showing cloud/aerosol distribution over the planet suface.
There are a variety of "levels" at which data can be retrieved. Level 1 corresponds to raw, calibrated instrument data. Level 2 is data which has been derived from level 1 data, and consists of cloud and aerosol optical depth information. Level 3 corresponds to global concatenated datasets, showing cloud/aerosol distribution over the planet surface.


==Access portals==
==Access portals==
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ASDC coordinates the collection, processing, and distribution of NASA Earth Science data and is the entry point for access to all earth science datasets
ASDC coordinates the collection, processing, and distribution of NASA Earth Science data and is the entry point for access to all earth science datasets
===[http://l0dup05.larc.nasa.gov/sciflo/amapsLangley/ Aerosol Measurement and Processing Sytem (AMAPS)]===
===[http://l0dup05.larc.nasa.gov/sciflo/amapsLangley/ Aerosol Measurement and Processing Sytem (AMAPS)]===
AMAPS provides conveient tools which provide access to aerosol data from MODIS and MISR. It provides a tool which allows a user to specify a specific location on the planet by latitude and londitude, and will provie all MISR  between a specified time interval which cover this area. There are two methods to specify the location , either through uploading a text file, [http://l0dup05.larc.nasa.gov/sciflo/cgi-bin/submit_sciflo.cgi?scifloStr=http://l0dup05.larc.nasa.gov/sciflo/web/flows/site/amaps-langley/MatchupSitesToMisr.sf.xml&reset=hard&basicTemplate=true URL version] (useful for batch operation) or through [http://l0dup05.larc.nasa.gov/sciflo/cgi-bin/submit_sciflo.cgi?scifloStr=http://l0dup05.larc.nasa.gov/sciflo/web/flows/site/amaps-langley/MatchupSitesToMisr2.sf.xml&reset=hard&basicTemplate=true browser text input]
AMAPS provides convenient tools which provide access to aerosol data from MODIS and MISR. It provides a tool which allows a user to specify a specific location on the planet by latitude and longitude, and will provide all MISR  between a specified time interval which cover this area. There are two methods to specify the location , either through uploading a text file, [http://l0dup05.larc.nasa.gov/sciflo/cgi-bin/submit_sciflo.cgi?scifloStr=http://l0dup05.larc.nasa.gov/sciflo/web/flows/site/amaps-langley/MatchupSitesToMisr.sf.xml&reset=hard&basicTemplate=true URL version] (useful for batch operation) or through [http://l0dup05.larc.nasa.gov/sciflo/cgi-bin/submit_sciflo.cgi?scifloStr=http://l0dup05.larc.nasa.gov/sciflo/web/flows/site/amaps-langley/MatchupSitesToMisr2.sf.xml&reset=hard&basicTemplate=true browser text input]


===[http://eosweb.larc.nasa.gov/HPDOCS/datapool/ Data pool]===
===[http://eosweb.larc.nasa.gov/HPDOCS/datapool/ Data pool]===
Provides FTP access to recently produced data, in a .HDF file format. This data must be post processed using supplied [http://eosweb.larc.nasa.gov/PRODOCS/misr/tools/misr_tools.html software]. It appears that to retreive specific Aerosol data from the .HDF files, a compatibl GIS environment (eg.IDL) must be utilized.  
Provides FTP access to recently produced data, in a .HDF file format. This data must be post processed using supplied [http://eosweb.larc.nasa.gov/PRODOCS/misr/tools/misr_tools.html software]. It appears that to retrieve specific Aerosol data from the .HDF files, a compatible GIS environment (eg.IDL) must be utilized.  


===[http://l0dup05.larc.nasa.gov/MISR/cgi-bin/MISR/main.cgi Data order tool]===
===[http://l0dup05.larc.nasa.gov/MISR/cgi-bin/MISR/main.cgi Data order tool]===
Provides acess to all MIDC data, filered spacially and temporally, in seperate .HDF files for the entire measurement campaign. Again, post processing of the .HDF file is requried to read individual site Aerosol information.
Provides access to all MIDC data, filtered spatially and temporally, in separate .HDF files for the entire measurement campaign. Again, post processing of the .HDF file is required to read individual site Aerosol information.

Revision as of 01:49, 3 August 2011

Introduction

NASA maintains programs which continuously monitor atmospheric parameters using remote sensing satellites, a summary of the NASA Aerosol programs can be found here. There are two instruments which are used, MISR (Multi-angle Imaging SpectroRadiometer) and MODIS (Moderate-resolution Imaging Spectroradiometer). MODIS provides a wide band, low resolution spectroscopic view of the earths surface and can "see" the entire planet every 1-2 days. MISR has a higher resolution, and "sees" the entire planet less frequently, but at a higher resolution.

Accessing the data

There are a variety of "levels" at which data can be retrieved. Level 1 corresponds to raw, calibrated instrument data. Level 2 is data which has been derived from level 1 data, and consists of cloud and aerosol optical depth information. Level 3 corresponds to global concatenated datasets, showing cloud/aerosol distribution over the planet surface.

Access portals

Atmospheric Science Data Center (ASDC)

ASDC coordinates the collection, processing, and distribution of NASA Earth Science data and is the entry point for access to all earth science datasets

Aerosol Measurement and Processing Sytem (AMAPS)

AMAPS provides convenient tools which provide access to aerosol data from MODIS and MISR. It provides a tool which allows a user to specify a specific location on the planet by latitude and longitude, and will provide all MISR between a specified time interval which cover this area. There are two methods to specify the location , either through uploading a text file, URL version (useful for batch operation) or through browser text input

Data pool

Provides FTP access to recently produced data, in a .HDF file format. This data must be post processed using supplied software. It appears that to retrieve specific Aerosol data from the .HDF files, a compatible GIS environment (eg.IDL) must be utilized.

Data order tool

Provides access to all MIDC data, filtered spatially and temporally, in separate .HDF files for the entire measurement campaign. Again, post processing of the .HDF file is required to read individual site Aerosol information.

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