Earthdata Forum

Hello,

Anyone know the differences between the interp settings on the L3mapgen function?  I'm making 8-day composites of 1km resolution sst using L2 files, and would like to minimize the cross-hatching effect that I'm presently getting (I used the 'area' interp option).  Obvious in the attached image: in particular, the "V" at the top of the image. .

When you use "interp=area" you can also set the "fudge" parameter to make each pixel bigger.  This will average the neighboring pixels, but will obviously decrease your resolution.

Are you sure the artifact is introduced by l3mapgen and not l2bin?

Can you put the bin file and l3mapgen command line parameters somewhere where I can grab them.

don

Very well could come from l2bin -- any good way to determine that?  I perfomed l2bin on each file individually, then l3 bin in chunks of 8 days worth of files.  Finally l3mapgen.  Here's an image of my l3mapgen parameters:



Here's a link to the final L3 mapped file: https://www.dropbox.com/s/w70ek5g9te9a653/A2016193-200_8D_L3M.nc?dl=0
And a link to the L3 bin file: https://www.dropbox.com/s/kuegkcahaeh3cxg/A20161932016200.L3b_8D_SST?dl=0

Here's the log file readout for one instance of using l3bin:
And below that, I've posted the l3mapgen log.

Thanks!

Execution log for
[/Applications/seadas-7.3.2/ocssw/run/scripts/ocssw_runner, --ocsswroot, /Applications/seadas-7.3.2/ocssw, l3bin, parfile=/Users/alysiaherr/Dropbox/ALYSIA/MATLAB_alysia/Sat_SST/L3_Binned/Jul_11-13/tmpParFile2681278049870431981.par]
L3BIN 4.20 (Apr 27 2016 10:27:28)
66 input files
0 A2016193121000.L3b_DAY_SST.nc
1 A2016193134500.L3b_DAY_SST.nc
2 A2016193135000.L3b_DAY_SST.nc
3 A2016193200500.L3b_DAY_SST.nc
4 A2016193201000.L3b_DAY_SST.nc
5 A2016193214500.L3b_DAY_SST.nc
6 A2016193215000.L3b_DAY_SST.nc
7 A2016193232000.L3b_DAY_SST.nc
8 A2016193232500.L3b_DAY_SST.nc
9 A2016194111500.L3b_DAY_SST.nc
10 A2016194125000.L3b_DAY_SST.nc
11 A2016194125500.L3b_DAY_SST.nc
12 A2016194191500.L3b_DAY_SST.nc
13 A2016194205000.L3b_DAY_SST.nc
14 A2016194205500.L3b_DAY_SST.nc
15 A2016194222500.L3b_DAY_SST.nc
16 A2016194223000.L3b_DAY_SST.nc
17 A2016195000500.L3b_DAY_SST.nc
18 A2016195001000.L3b_DAY_SST.nc
19 A2016195115500.L3b_DAY_SST.nc
20 A2016195133500.L3b_DAY_SST.nc
21 A2016195195500.L3b_DAY_SST.nc
22 A2016195213000.L3b_DAY_SST.nc
23 A2016195213500.L3b_DAY_SST.nc
24 A2016195231000.L3b_DAY_SST.nc
25 A2016195231500.L3b_DAY_SST.nc
26 A2016196124000.L3b_DAY_SST.nc
27 A2016196203500.L3b_DAY_SST.nc
28 A2016196204000.L3b_DAY_SST.nc
29 A2016196221500.L3b_DAY_SST.nc
30 A2016196222000.L3b_DAY_SST.nc
31 A2016196235000.L3b_DAY_SST.nc
32 A2016196235500.L3b_DAY_SST.nc
33 A2016197114500.L3b_DAY_SST.nc
34 A2016197132000.L3b_DAY_SST.nc
35 A2016197132500.L3b_DAY_SST.nc
36 A2016197194500.L3b_DAY_SST.nc
37 A2016197212000.L3b_DAY_SST.nc
38 A2016197212500.L3b_DAY_SST.nc
39 A2016197225500.L3b_DAY.SST.nc
40 A2016197230000.L3b_DAY_SST.nc
41 A2016198122500.L3b_DAY_SST.nc
42 A2016198123000.L3b_DAY_SST.nc
43 A2016198140500.L3b_DAY_SST.nc
44 A2016198202500.L3b_DAY_SST.nc
45 A2016198203000.L3b_DAY_SST.nc
46 A2016198220000.L3b_DAY_SST.nc
47 A2016198220500.L3b_DAY_SST.nc
48 A2016198234000.L3b_DAY_SST.nc
49 A2016198234500.L3b_DAY_SST.nc
50 A2016199113000.L3b_DAY_SST.nc
51 A2016199131000.L3b_DAY_SST.nc
52 A2016199193000.L3b_DAY_SST.nc
53 A2016199193500.L3b_DAY_SST.nc
54 A2016199210500.L3b_DAY_SST.nc
55 A2016199211000.L3b_DAY_SST.nc
56 A2016199224500.L3b_DAY_SST.nc
57 A2016199225000.L3b_DAY_SST.nc
58 A2016200121500.L3b_DAY_SST.nc
59 A2016200135500.L3b_DAY_SST.nc
60 A2016200201000.L3b_DAY_SST.nc
61 A2016200201500.L3b_DAY_SST.nc
62 A2016200215000.L3b_DAY_SST.nc
63 A2016200215500.L3b_DAY_SST.nc
64 A2016200232500.L3b_DAY_SST.nc
65 A2016200233000.L3b_DAY_SST.nc
irow:     0 of    17280 Fri Jan 27 15:53:09 2017
...
irow: 17000 of    17280 Fri Jan 27 15:54:53 2017

L3mapgen log:
Execution log for
[/Applications/seadas-7.3.2/ocssw/run/scripts/ocssw_runner, --ocsswroot, /Applications/seadas-7.3.2/ocssw, l3mapgen, par=/Users/alysiaherr/Dropbox/ALYSIA/MATLAB_alysia/Sat_SST/L3_Binned/Jul_11-18/tmpParFile6618878568457695416.par]
l3mapgen 1.0.1-r12911 (Apr 27 2016 10:21:34)
ifile      : /Users/alysiaherr/Dropbox/ALYSIA/MATLAB_alysia/Sat_SST/L3_Binned/Jul_11-18/A20161932016200.L3b_8D_SST
ofile      : /Users/alysiaherr/Dropbox/ALYSIA/MATLAB_alysia/Sat_SST/L3_Binned/Jul_11-18/output
oformat    : netcdf4
projection : platecarree
resolution : 1159.578m
product    : sst,qual_sst,flags_sst,bias_sst,stdv_sst,sstref
north      :   61.995
south      :   44.005
east       : -122.409
west       : -149.999
image size : 1727 x 2648

1% complete
...
99% complete

actual data min       : 0.000000
actual data max       : 23356.000000
num filled pixels     : 873205
percent filled pixels : 19.09%