Search found 135 matches

by OB WebDev - norman
Wed May 17, 2017 5:01 pm America/New_York
Forum: Questions/Comments
Question: Geographical coordinate system used for MODIS aqua data
Replies: 4

Geographical coordinate system used for MODIS aqua data

Hi Mohd,Our level-2 data sets have not been projected to any particular coordinate system.Rather, the data are stored roughly in the order in which they were collected bythe various instruments such as MODIS.  To work with these data you will needto read the latitude and longitude data sets tha...
by OB WebDev - norman
Wed Feb 08, 2017 8:28 am America/New_York
Forum: Questions/Comments
Question: Trying to open L3 files without sucsess
Replies: 7

Trying to open L3 files without sucsess

Hi Marat,There is the l3bindump program that is distributed as partof the processing code.  I use this program occasionally toread level-3 bin files into other packages such as GMT.l3bindump 3.0.0-r12992 (May 11 2016 19:30:27)Usage: l3bindump argument-list  The argument-list is a set of ke...
by OB WebDev - norman
Wed Feb 01, 2017 10:20 am America/New_York
Forum: Questions/Comments
Question: problem to satallite data access: create a request
Replies: 3

problem to satallite data access: create a request

Slava,

You should be able to get to the next page now.  Thank you
for pointing this out.

Norman
by OB WebDev - norman
Wed Feb 01, 2017 9:00 am America/New_York
Forum: Questions/Comments
Question: problem to satallite data access: create a request
Replies: 3

problem to satallite data access: create a request

Hi Slava,

I see the same bug... investigating.

Norman
by OB WebDev - norman
Tue Jan 10, 2017 11:07 am America/New_York
Forum: Questions/Comments
Question: l3mapgen georeferencing
Replies: 3

l3mapgen georeferencing

Well, here is one inelegant way to get the corner coordinates you seek.  I am usingGMT in my example since that is what I am most familiar with, but the same logic shouldwork using any other map projection software like Proj4.# First, naively specify a Lambert azimuthal equal area projection wi...
by OB WebDev - norman
Thu Nov 13, 2014 5:07 pm America/New_York
Forum: Questions/Comments
Question: HICO l2 projection problem
Replies: 6

HICO l2 projection problem

Hi Jun,I had a look at the HICO scene you refer to and find thegeolocation information has no unexpected corner anomalies.I am attaching a 3-band image I made from the data withoutusing SeaDAS.  We'll need to investigate further.In the mean time, can you post the exact steps you usedto make...
by OB WebDev - norman
Mon Apr 28, 2014 4:08 pm America/New_York
Forum: Questions/Comments
Question: HICO Level-2 Data
Replies: 1

HICO Level-2 Data

Hi Bruce,

No official level-2 HICO products from our shop yet.
See this post.

http://oceancolor.gsfc.nasa.gov/forum/oceancolor/topic_show.pl?pid=22790

Regards,
Norman
by OB WebDev - norman
Fri Jan 17, 2014 10:15 am America/New_York
Forum: Questions/Comments
Question: HICO level 1b data - latitudes/longitudes not quite correct
Replies: 7

HICO level 1b data - latitudes/longitudes not quite correct

We of the Ocean Biology Processing Group arealso relatively new to the HICO data stream.Since we are a small group, we appreciatewhen anyone from the science communitycalls out issues that we may not have noticedwith HICO (or any of our supported remotesensing platforms).  Please, continue to l...
by OB WebDev - norman
Fri Jan 17, 2014 9:49 am America/New_York
Forum: Questions/Comments
Question: HICO level 1b data - latitudes/longitudes not quite correct
Replies: 7

HICO level 1b data - latitudes/longitudes not quite correct

Andy,When we first started working with these data, the coordinateswere often off by tens of kilometers.  Since then the HICO expertshave improved the geolocation considerably, but it is still notgood to within a pixel.My understanding is that it is very difficult to get accurate attitudeinform...
by OB WebDev - norman
Fri Jan 17, 2014 9:38 am America/New_York
Forum: Questions/Comments
Question: HICO file contents
Replies: 1

HICO file contents

Hi Jasmine,When we first set up HICO processing here at the OBPG,we were inadvertently including a copy of the level-0data in the level-1B files we were making.  This substantiallyincreased the file sizes unnecessarily.  The /data/hicodataset is now no longer included in our L1B products.C...