Earthdata Forum

Posted: **Mon Mar 07, 2022 2:19 pm America/New_York**

Hi folks,

I'm probably doing something stupid here, but I'm pretty sure this command sequence has worked for me in the past.

I have these input files.

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$ ls -l V*
-rw-rw-r-- 1 norman norman  45683223 Feb 20 10:43 V2022051083600.GEO-M_JPSS1.nc
-rw-rw-r-- 1 norman norman 464234144 Feb 20 10:35 V2022051083600.L1A_JPSS1.nc
-rw-rw-r-- 1 norman norman       588 Mar  7 13:33 V2022051083600.L1A_JPSS1.nc.anc

The ancillary file was generated with:

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getanc V2022051083600.L1A_JPSS1.nc

The forum doesn't allow me to attach the output file directly, but it looks like this.

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$ cat V2022051083600.L1A_JPSS1.nc.anc
geo1=/data1/ocssw/var/anc/2022/051/V2022051083600.GEO-M_JPSS1.nc
icefile=/data1/ocssw/var/anc/2022/051/N2022051_SST_OIV2AV_24h.nc
met1=/data1/ocssw/var/anc/2022/051/N202205100_MET_NCEPR2_6h.hdf
met2=/data1/ocssw/var/anc/2022/051/N202205112_MET_NCEPR2_6h.hdf
met3=/data1/ocssw/var/anc/2022/051/N202205112_MET_NCEPR2_6h.hdf
ozone1=/data1/ocssw/var/anc/2022/051/N202205100_O3_AURAOMI_24h.hdf
ozone2=/data1/ocssw/var/anc/2022/052/N202205200_O3_AURAOMI_24h.hdf
ozone3=/data1/ocssw/var/anc/2022/052/N202205200_O3_AURAOMI_24h.hdf
sstfile=/data1/ocssw/var/anc/2022/051/N2022051_SST_OIV2AV_24h.nc

So far, so good, I think.

I get an error when I run l2gen, however.

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$ l2gen ifile=V2022051083600.L1A_JPSS1.nc geofile=V2022051083600.GEO-M_JPSS1.nc par=V2022051083600.L1A_JPSS1.nc.anc ofile=V2022051083600.L2.nc l2prod=rhos_445,rhos_556,rhos_667,rhos_868,chlor_a
Loading default parameters from /data1/ocssw/share/common/msl12_defaults.par
Input file V2022051083600.L1A_JPSS1.nc is VIIRS JPSS-1 L1A NetCDF4.

Loading characteristics for VIIRSJ1
Opening sensor information file /data1/ocssw/share/viirs/j1/msl12_sensor_info.dat
  Bnd   Lam       Fo    Tau_r     k_oz    k_no2    t_co2   awhite       aw      bbw
    0  411.000  172.571 3.210e-01 2.618e-04 6.006e-19 1.000e+00 1.000e+00 1.169e-02 2.984e-03
    1  445.000  192.488 2.312e-01 3.220e-03 4.932e-19 1.000e+00 1.000e+00 1.833e-02 2.131e-03
    2  489.000  197.681 1.573e-01 2.129e-02 2.886e-19 1.000e+00 1.000e+00 2.174e-02 1.428e-03
    3  556.000  182.765 9.252e-02 9.965e-02 8.767e-20 1.000e+00 1.000e+00 7.367e-02 8.275e-04
    4  667.000  151.106 4.420e-02 4.771e-02 8.008e-21 1.000e+00 8.871e-01 4.505e-01 3.883e-04
    5  746.000  127.525 2.815e-02 1.083e-02 1.820e-21 1.000e+00 7.872e-01 2.833e+00 2.447e-04
    6  868.000   94.945 1.533e-02 2.062e-03 6.223e-23 1.000e+00 6.486e-01 4.768e+00 1.315e-04
    7 1238.000   45.609 3.650e-03 3.897e-14 0.000e+00 9.994e-01 0.000e+00 1.359e+02 3.044e-05
    8 1604.000   24.974 1.296e-03 2.357e-14 0.000e+00 9.890e-01 0.000e+00 7.720e+02 1.063e-05
    9 2258.000    7.711 3.285e-04 1.388e-13 0.000e+00 9.696e-01 0.000e+00 2.197e+03 2.648e-06

  Bnd   Lam
   10 3700.000
   11 4050.000
   12 8550.000
   13 10763.000
   14 12013.000

Loading default parameters for VIIRSJ1 from /data1/ocssw/share/viirs/msl12_defaults.par
Loading default sub-sensor parameters for VIIRSJ1 from /data1/ocssw/share/viirs/j1/msl12_defaults.par
Loading parameters for suite OC from /data1/ocssw/share/viirs/msl12_defaults_OC.par
Loading parameters for suite OC from /data1/ocssw/share/viirs/j1/msl12_defaults_OC.par
Loading command line parameters

Loading user parameters for VIIRSJ1
-E- Invalid argument "geo1"
   geo1 (string) (current=/data1/ocssw/var/anc/2022/051/V2022051083600.GEO-M_JPSS1.nc) (source=V2022051083600.L1A_JPSS1.nc.anc)

-E- Invalid argument "geo1"
geo1 (string) (current=/data1/ocssw/var/anc/2022/051/V2022051083600.GEO-M_JPSS1.nc) (source=V2022051083600.L1A_JPSS1.nc.anc)

Does anyone have any idea what I may be doing wrong? (I get the same 'Invalid argument "geo1"' error when attempting to process SNPP VIIRS data.)

Thanks for any light you can shed on my problem.

Norman

P.S. These are the software versions I am using.

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$ getanc --version
getanc 2.2

$ l2gen --version
msl12 9.5.1-V2022.0 (Jan 11 2022 14:33:38)

$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 20.04.4 LTS
Release:	20.04
Codename:	focal

Posted: **Mon Mar 07, 2022 3:48 pm America/New_York**

Hi Norman,

Please try

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$ l2gen ifile=V2022051083600.L1A_JPSS1.nc geofile=V2022051083600.GEO-M_JPSS1.nc parfile=V2022051083600.L1A_JPSS1.nc.anc ofile=V2022051083600.L2.nc l2prod=rhos_445,rhos_556,rhos_667,rhos_868,chlor_a

Note
par (ifile) = input parameter file
parfile (ifile) = par climatology file for NPP calculation

Bing

Posted: **Mon Mar 07, 2022 4:17 pm America/New_York**

Thank you Bing. That seems to be working.

I figured I was doing something silly. Interestingly, I had the command line coded that way in a script I use. Perhaps I inadvertently chopped out the "file" portion of "parfile" the last time I edited the script.

I hope you are well.

Thanks again,
Norman

Posted: **Mon Mar 07, 2022 4:47 pm America/New_York**

You are welcome Norman!

Bing

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