Difference between revisions of "PSD"
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under construction<br> | under construction<br> | ||
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| − | + | <math>N(D)=N_o \left ( \frac{D}{D_o} \right )^\xi</math> | |
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The Particle Size Distribution Slope (<math>\xi</math>) and Particle | The Particle Size Distribution Slope (<math>\xi</math>) and Particle | ||
| − | differential Number concentration N<sub>o</sub> (for D<sub>o</sub>=2<math>\mu</math>m) | + | differential Number concentration N<sub>o</sub> (for D<sub>o</sub>=2<math>\mu</math>m) were calculated following Kostadinov ''et.al.'' 2009. |
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| − | were calculated following Kostadinov ''et.al.'' 2009 | ||
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<br> | <br> | ||
| − | + | The method was applied to | |
[http://oceandata.sci.gsfc.nasa.gov/SeaWiFS/Mapped/Monthly/9km/Rrs/ SeaWiFS L3 monthly Rrs]<br> | [http://oceandata.sci.gsfc.nasa.gov/SeaWiFS/Mapped/Monthly/9km/Rrs/ SeaWiFS L3 monthly Rrs]<br> | ||
| + | file naming convention uses most of the original SeaWiFS file name, replacing RRS_rrs_*_9km.bz2 with .XiNo.nc. | ||
| + | SYYYYdddYYYYddd.L3m_MO.XiNo.nc<br> | ||
| + | here YYYYdddYYYYddd is the year and 3-digit day-of-year, for the start and end of the month long composite file. | ||
<br> | <br> | ||
| − | + | each netcdf (V4 "classic") file contains the variables Xi (<math>\xi</math>) and logNo (<math>log_{10}(N_o</math>) in the 2160x4320 [http://oceancolor.gsfc.nasa.gov/DOCS/ocformats.html#6 SMI format] these are | |
| − | + | single floats with a fill value of -999. | |
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| + | References: Kostadinov, T.S., D.A.Siegel, & S. Maritorena (2009) Retrieval of the particle size distribution from satellite ocean color observations. ''J. Geophys. Res.,114,'' C09015,doi:10.1029/2009JC005303 | ||
| − | + | == Data (link to FTP site) == | |
| + | * [ftp://ftp.oceancolor.ucsb.edu//pub/org/oceancolor/MEaSUREs/PSD/ SeaWiFS-based monthly PSD] | ||
Latest revision as of 10:57, 16 February 2012
PSD Product Description
under construction
<math>N(D)=N_o \left ( \frac{D}{D_o} \right )^\xi</math>
The Particle Size Distribution Slope (<math>\xi</math>) and Particle
differential Number concentration No (for Do=2<math>\mu</math>m) were calculated following Kostadinov et.al. 2009.
The method was applied to
SeaWiFS L3 monthly Rrs
file naming convention uses most of the original SeaWiFS file name, replacing RRS_rrs_*_9km.bz2 with .XiNo.nc.
SYYYYdddYYYYddd.L3m_MO.XiNo.nc
here YYYYdddYYYYddd is the year and 3-digit day-of-year, for the start and end of the month long composite file.
each netcdf (V4 "classic") file contains the variables Xi (<math>\xi</math>) and logNo (<math>log_{10}(N_o</math>) in the 2160x4320 SMI format these are
single floats with a fill value of -999.
References: Kostadinov, T.S., D.A.Siegel, & S. Maritorena (2009) Retrieval of the particle size distribution from satellite ocean color observations. J. Geophys. Res.,114, C09015,doi:10.1029/2009JC005303
