| Meris Eutrophic Lakes Algorithm Parameter | |
| Number | Parameter | Default Value | Description |
|---|---|---|---|
| 1 | waterNnInverseFilePath waterNnForwardFilePath atmCorrNnFilePath polCorrNnFilePath |
./water_net_eutrophic_20070710/60x20_586.8inv.net ./water_net_eutrophic_20070710/30x15_88.8forw.net ./atmo_net_20080515/25x30x35x40_4016.9.net 18_518.1.netPolEffekt |
Paths and names of the neural network files: a relative path is assumed to be relative to ${USER_HOME}\.beam\beam-meris-eutrophic-lakes\auxdata\. |
| 2 | inputValidMask | not l1_flags.INVALID | An arithmetic expression which defines the valid pixels for the processing. Pixels which are not valid are skipped by the processor. |
| 3 | landWaterSeparationExpression cloudIceDetectionExpression |
toa_reflec_10 > toa_reflec_6 AND toa_reflec_13 > 0.0475 toa_reflec_14 > 0.2 |
These expressions can be edited to change the separation from land and water, respectively the detection of cloud and ice. Within the expression all tie-point grids and the 15 toa_reflec bands can be used. |
| 4 | performSmileCorrection | true | Switch the smile correction on and off. |
| 5 | performPolCorr | false | Controls if the polarisation correction should be included in the atmospheric correction procedure. This part is presently very experimental and has not been verified so far. |
| 6 | performAtmosphericCorrection | true |
If the build-in atmospheric correction is switched the input product must honor the following rules: - All tie-point grids of the MERIS L1b product, namely: latitude, longitude, sun_zenith, sun_azimuth, view_zenith, view_azimuth, dem_alt, ozone, atm_press, dem_alt, zonal_wind, merid_wind, rel_hum - The flags band of MERIS L1b l1_flags - 15 bands named reflec_1 .. reflec_15 |
| 7 |
outputBTsm outputAPig outputAGelb outputATotal outputABTsm |
true true true true |
Select which of the IOP products shall be included in the output file.
All are given for MERIS band 2 (443 nm). outputBTsm := scattering coefficient of all particles outpuAPig := absorption coefficient of phytoplankton pigments outputAGelb := absorption coefficient of yellow substance and of all particles after bleaching outputATotal := total absorption of water constituents outputABtsm := absorption of all particles |
| 8 |
outputKmin outputZ90max |
true true |
Select which of the transparency variables shall be included in the output file. outputKmin := downwelling irradiance attenuation coefficient outputZ90max := inverted value of Kmin |
| 9 |
outputChlConc outputTsmConc |
true true |
Select which of the concentrations shall be included in the output file. outputChlConc := chlorophyll concentration (mg m-3) outputTsmConc := total suspended matter dry weight (g m-3) |
| 10 |
outputAngstrom outputTau |
true true |
Controls the output of the angstrom coefficient (ang_443_865) and the spectral aerosol optical depth (tau_550). |
| 11 | outputOutOfScopeChiSquare | true | Controls the Output of the chi2 value, i.e. the squared difference between measured and simulated water leaving radiance reflectances, shall be included in the product. A low value in the product indicates a higher success in the retrieval and that the conditions, which have led to the measured spectrum, are in (sufficient) agreement with the conditions and the bio-optical model used in the simulations for training the neural network. A value above a threshold of presently 4.0 triggers the out of training range == out of scope flag. |
| 14 |
tsmConversionFactor tsmConversionExponent |
1.73 1.0 |
Factors for converting particle scattering into total suspended matter dry weight. Ctsm (g m-3) = tsmConversionFactor * b443^tsmConversionExponent |
| 15 |
chlConversionFactor chlConversionExponent |
0.0318 1.0 |
Factors for converting absorption of phytoplankton pigment at 443 into chlorophyll
concentration. Chlorophyll (mg m-3) = chlConversionFactor a_pig443^chlConversionExponent |
| 16 | radiance1AdjustmentFactor | 1.0 | Factors for the adjustment of TOA reflectance MERIS band 1 (412 nm). |
| 17 | spectrumOutOfScopeThreshold | 4.0 | The out of scope (= out of training range) flag will be set if the chi2 value is above the given threshold. |
| 18 |
outputPathRadianceReflAll outputPathRadianceRefl.[1 - 10, 12, 13] |
false true |
outputPathRadianceReflAll sets the default value for all values of the
outputPathRadianceRefl. outputPathRadianceRefl.# defines (separately for each band) if path radiance reflectance shall be included in output product. |
| 19 | switchToIrradianceReflectance | false | Controls if the water leaving reflectances shall be written out as irradiance reflectances. |
| 20 |
outputWaterLeavingReflAll outputWaterLeavingRefl.[1 - 10,12,13] |
false true |
outputWaterLeavingReflAll sets the default value for all values of
outputWaterLeavingRefl. outputWaterLeavingRefl.# defines (separately for each band) if path radiance reflectance shall be included in output product. |
| 21 |
outputTransmittanceAll outputTransmittance.[1 - 10,12,13] |
true true |
outputTransmittanceAll sets the default value for all values of
outputTransmittance. outputTransmittance.# defines (separately for each band) if path radiance reflectance shall be included in output product. |
| 22 | outputToaReflAll outputToaRefl.[1 - 15] |
true true |
outputToaReflAll sets the default value for all values of
outputToaRefl. outputToaRefl.# defines (separately for each band) if path radiance reflectance shall be included in output product. |
| 23 | outputTosaReflAll outputTosaRefl.[1 - 15] outputTosaRefl.[11,14,15] |
false true false |
outputTosaReflAll sets the default value for all values of
outputTosaRefl. outputTosaRefl.# defines (separately for each band) if path radiance reflectance shall be included in output product. |