Search found 165 matches

by avmehta
Fri Jun 11, 2021 1:14 pm America/New_York
Forum: Questions/Comments
Question: MODIS Geolocation
Replies: 2

MODIS Geolocation

Hello, I am trying to process MODIS L1 to L2. Most files starting from Julian date 336 for 2020 and almost all files for 2021. I get geo-processing errors in modis_GEO.py (example is shown below): call modis_GEO.py ----------------------------- MODIS GEO version 6.1.0, built Aug 16 2019 12:46:24 sca...
by avmehta
Wed Jun 09, 2021 10:59 pm America/New_York
Forum: Questions/Comments
Question: MODIS L1 to L2
Replies: 3

Re: MODIS L1 to L2

Hi Sean, For 2019 missing days are: 005 006 015 016 021 022 027 031 032 036 043 044 052 057 060 073 081 082 085 087 088 093 109 113 114 117 119 125 130 133 134 135 136 141 151 152 158 164 174 177 178 180 182 185 205 210 213 215 216 221 228 231 232 236 238 244 254 257 258 269 270 273 274 277 279 281 ...
by avmehta
Wed Jun 09, 2021 3:05 pm America/New_York
Forum: Questions/Comments
Question: OLCI Data Download
Replies: 4

OLCI Data Download

Hello, I have been downloading OLCI L1 data using the Ocean Color Web. from 'select one or more region' I choose The Chesapeake Bay, select swaths and download data. I downloaded all available swaths for 2021 for this region. I find that occasionally some images are not in the Bay region but are cen...
by avmehta
Wed Jun 09, 2021 2:57 pm America/New_York
Forum: Questions/Comments
Question: MODIS L1 to L2
Replies: 3

MODIS L1 to L2

Hello, I am processing MODIS L1 to L2 for years 2002 to 2021. I find that in each year, L1 data for several days are missing - more in some years than others. For example, 2003 has only one day missing but 2004 and 2011 have ~10 to 15 days missing. The largest number of days missing are in 2019 (~80...
by avmehta
Tue Jun 08, 2021 6:11 pm America/New_York
Forum: Questions/Comments
Question: OLCI Chlorophyll from OCSSW
Replies: 1

OLCI Chlorophyll from OCSSW

Hi,
This is just to confirm (again) that OLCI processing in SeaDAS uses OC4 algorithm by default for Ch-a calculations.
Thank you.
Amita
by avmehta
Wed May 05, 2021 12:07 am America/New_York
Forum: Questions/Comments
Question: MODIS data
Replies: 2

MODIS data

Hello,
I ordered MODIS data through OC Data Access. Before I could download all the files, the order was removed! I re-ordered the data (OBPG: Data order [c0a0f30a289b0166]. Is it possible to get the data back online?
Thank you.
Amita
by avmehta
Fri Mar 26, 2021 11:39 am America/New_York
Forum: Questions/Comments
Question: OLCI data peocessing
Replies: 1

OLCI data peocessing

Hello, I am using gpt with OLCI images. I assume that when there are no multiple images, available single image is added to the larger grid specified. Occasionally I see that in the resulting file there is a line appears where no samples are counted! This feature is not seen in the original image. P...
by avmehta
Wed Mar 03, 2021 4:39 pm America/New_York
Forum: Questions/Comments
Question: OLCI and MODIS data processing
Replies: 0

OLCI and MODIS data processing

Hello, This is in continuation of my Q/A with the OC Forum about using gpt to mosaic MODIS and OLCI images. In the end I started using IDL because while gpt provides mean reflectances we are interested in composting 7-day images to find mean, minimum and median reflectances for a region. Since I wan...
by avmehta
Mon Feb 22, 2021 10:15 am America/New_York
Forum: Questions/Comments
Question: gpt MosaicGeneral
Replies: 7

gpt MosaicGeneral

Hi,
The xml file does not like && ! Any way I am  going to use IDL to do mosaics as I want minimum, mean, and median values  for the mosaics.
Thanks for your help.
Amita
by avmehta
Thu Feb 18, 2021 12:40 pm America/New_York
Forum: Questions/Comments
Question: gpt MosaicGeneral
Replies: 7

gpt MosaicGeneral

Thanks so much Danny - will try this.
Amita