Temporal binning: Level-3 temporal binning is performed on a set of Level-3 binned files. This input set can include both spatially and/or temporally binned Level-3 binned files. Temporally gridded files are created from the summation of any number of Level-3 binned files. Typical binning periods used include "orbit", "daily", "8day", "monthly", and "yearly" products. However, SeaDAS provides the capability of producing a Level-3 time-binned file of any time period. See notes below. Lat/lon coordinates can also be specified to create a new L3 extract from an existing L3 file.
Note: The SeaWiFS Project (and the Goddard DAAC) support only the standard temporal periods of "orbit", "daily", "8day", "monthly", or "yearly". SeaDAS currently offers non-standard temporal binning. Any length of time can be used in SeaDAS but realize that the "time trend" flag, which is used as an indicator of which files went into a temporal product, would not make sense under non-standard temporal conditions so it is not modified in those cases.
Note: SeaWiFS NORAD orbital elements data files must be periodically updated in order for the l3bin program to function correctly. These files are located in the $SEADAS/data/seawifs/norad directory and can be downloaded from: ftp://samoa.gsfc.nasa.gov/pub/orbital_elements/
See the SeaWiFS Technical Memorandum (TM) series volume 32 (abstracts online on seawifs.gsfc.nasa.gov) for further details on the SeaWiFS spatial and temporal binning design.
[Command Mode][Interactive Mode]
Usage:
l3bin,
ifile="ifile",
ofile="ofile",
l3bprod="l3bprod",
noext=noext,
latsouth=latsouth,
latnorth=latnorth,
lonwest=lonwest,
loneast=loneast,
logfile=logfile
l3bin, ifile="ifile", ofile="ofile" (minimum command)
OR
l3bin, par="pfile"
Example:
l3bin, ifile="$SDSDEMO/timebin.list1", ofile="L3.hdf", l3bprod="chlor_a,nLw_443"
Arguments/Keywords for time binning:
| ifile | The name of an ASCII file containing a list of Level-3 binned input files. | |
| ofile | The output HDF file name. | |
| l3bprod | A list of product names to timebin. The default behavior is to process all products in the input files. This keyword should be used in place of the 'out_parm' keyword when used for time-binning. Type string array or a single string delimited by either commas or colons. | |
| noext | Set to 1 to create only one output file instead of a main file and separate files for each included product. | |
| loneast | Easternmost longitude for extraction (must be between -180 and 180) | |
| lonwest | Westernmost longitude for extraction (must be between -180 and 180) | |
| latnorth | Northernmost latitude for extraction (must be between -90 and 90) | |
| latsouth | Southernmost latitude for extraction (must be between -90 and 90) | |
| Log file | The output file name to keep the process log. | |
| par | Input parameter file to be used in the specific command mode 'l3bin, par="pfile"'. Parfile entries do not need to be bounded by single or double quotes. The parfile contains a list of keywords, one keyword per line, of the form KEYWORD=value. |
Main Window:
The main_widget can be accessed by selecting "l3bin" from the Process-SeaWiFS/MODIS/OCTS pull down menu in SeaDAS main menu or from the command line mode by typing: "l3bin".
Input items :
Input Listfile Enter the input textfile containing input filenames for time-binning. Options for l3bin
Set Products Select the desired output products for time-binning. Subordinates Choose whether the output file has subordinates for each product, or a single output file. LonEast Easternmost longitude for extraction (must be between -180 and 180) LonWest Westernmost longitude for extraction (must be between -180 and 180) LatNorth Northernmost latitude for extraction (must be between -90 and 90) LatSouth Southernmost latitude for extraction (must be between -90 and 90) Day Start/End These non-editable text fields show the start/end julian dates for the binning period based on the input files. Output filename The output file name for the time binned result. This field is automatically populated with a default filename based on the input files, but you can change it to whatever you want. Working directory The directory for the space binned or time binned output file. Note this is only used when the output file name(s) does not have the 'path' specified. Select (for Working directory) To display the File Selection Widget for selecting the working directory. The directory selected will be displayed in the corresponding field. Create (for SeaDAS script file) To create the SeaDAS script file based on the selections/options in the input screen. SeaDAS script file The output script file to be created when the Create button is pressed. This is a SeaDAS script file and can only be executed under SeaDAS or IDL command mode. Log file The output file name for the processing log if the user selects Submit.
Action items:
Run To run this program with selections/options in the input screen. Submit To run this program as a background process with the selections/options in the input screen. Help Displays the IDL version of online help on this widget. Quit To quit this program.
Set Products Widget:
Input items:
Reset Resets the product selections to their original settings. Set All Selects all products. Set None Unselects all products. Okay Closes the widget.
