AVHRR Global Aerosol Climatology Project
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The Global Aerosol Climatology Project (GACP), established in 1998 as part of the NASA Radiation Sciences Program and the Global Energy and Water Cycle Experiment (GEWEX), provides a 26.5-year global aerosol climatology compiled from channel-1 and -2 AVHRR data and supplemented by data from other satellites, field observations, and chemical-transport modelling.
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Example result / latest result (if near-real time)
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| Satellite: | TIROS / NOAA |
| Instrument(s): | AVHRR |
| Instrument/algorithm PI: | Michael Mishchenko, NASA GISS |
| Contact details: | mmishchenko[at]giss.nasa.gov |
| Parameter(s): | AOD |
| Aerosol algorithm: | GACP |
| Cloud screening: | ISCCP |
| Aerosol model: | spherical aerosols, wavelength independent index of refraction, monomodal size distribution |
| Retrieval assumptions: | globally identical aerosol characterization |
| Retrieval limitations: | ocean only |
| Spatial, temporal coverage: | 1983–2009 / climatological, global oceans |
| Spatial, temporal resolution: | 1°x1° daily |
| Operations status: | reprocessing |
| Validation status: | statistical comparisons with ship-borne sunphotometer data over the period 1983-2001 |
| Quality control: | ISCCP |
| last algorithm version: | N/A |
| last validation: | March 2007 |
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Product data access
Image / quicklook data access |