Search found 1277 matches

by OB.DAAC - SeanBailey
Tue May 17, 2022 3:23 pm America/New_York
Forum: Questions/Comments
Question: Run modis_GEO without network?
Replies: 3

Re: Run modis_GEO without network?

Short answer: yes.

Long(er) answer: A network connection is required to obtain the ATT/EPH data (and popuate the local sqlite database used by the script). Once those data are obtained (and database populated), modis_GEO will run without a network connection.

Sean
by OB.DAAC - SeanBailey
Thu Apr 07, 2022 9:02 am America/New_York
Forum: Questions/Comments
Question: The value of a measured by modis
Replies: 3

Re: The value of a measured by modis

There is a known bug in the processing of the IOP products related to the pure water values for aw and bbw. The current operational code uses an ASCII table of values that was updated prior to the last reprocessing. In that update, the header records for that file had a blank line and a couple of er...
by OB.DAAC - SeanBailey
Mon Mar 28, 2022 11:26 am America/New_York
Forum: Questions/Comments
Question: R222 reprocessing schedule
Replies: 4

Re: R222 reprocessing schedule

Mati, There is no firm schedule, but a squishy one is as follows: S3A OLCI - soon-ish (maybe this week!) S3B OLCI - the week following S3A OLCI MODIS-Aqua - early May 2022? MODIS-Terra - the week after Aqua SNPP-VIIRS - late May/early June 2022? NOAA20-VIIRS - the week after SNPP-VIIRS OCTS, SeaWiFS...
by OB.DAAC - SeanBailey
Fri Mar 18, 2022 3:18 pm America/New_York
Forum: Questions/Comments
Question: Why Kd490?
Replies: 5

Re: Why Kd490?

The diffuse attenuation coefficient is useful for estimating light penetration depth (which in turn is useful in productivity models, and radiative heating estimates, as well as other applications). Early estimates of water absorption (e.g. Hale and Querry, 1973) put the minimum absorption around 49...
by OB.DAAC - SeanBailey
Thu Mar 17, 2022 2:48 pm America/New_York
Forum: Questions/Comments
Question: download using wget from http manifest
Replies: 1

Re: download using wget from http manifest

It seems that you requested the data be expired, so it was removed from our distribution servers. What you downloaded wasn't a manifest file, but the HTML error page (which was sent because the data no longer existed). You can check on the status of an order using the order manager (https://oceandat...
by OB.DAAC - SeanBailey
Thu Mar 17, 2022 11:16 am America/New_York
Forum: Questions/Comments
Question: Time of data capture
Replies: 1

Re: Time of data capture

No. At Level 3 the data for a given bin can come from multiple orbits, or if multi-day composites, multiple days. Time of observation is therefore not meaningful to capture (nor possible).

Sean
by OB.DAAC - SeanBailey
Tue Mar 08, 2022 10:38 am America/New_York
Forum: Questions/Comments
Question: Difficulty processing L3 mapped CHL data
Replies: 4

Re: Difficulty processing L3 mapped CHL data

Not all the L3 mapped products are distributed as scaled integers. The chlorophyll product is store as floating point values, so no scaling is required. The equation you tried would only be necessary if the product was stored with a logarithmic scaling (rarely used - most products are linearly scale...
by OB.DAAC - SeanBailey
Thu Mar 03, 2022 1:30 pm America/New_York
Forum: Questions/Comments
Question: Some modis_GEO.py 7.5.3 fail but not in modis_GEO T2022.2 anc.db issues
Replies: 4

Re: Some modis_GEO.py 7.5.3 fail but not in modis_GEO T2022.2 anc.db issues

Brock, There was (still is until we can correct it) some missing metadata in our database related to some ancillary data. That was confusing the getanc script, having it pull a NRT ephemeris file instead of the definitive one. The newer getanc uses a different (and more robust) mechanism so was unaf...
by OB.DAAC - SeanBailey
Tue Mar 01, 2022 8:26 am America/New_York
Forum: Questions/Comments
Question: modis aqua data download interruption
Replies: 1

Re: modis aqua data download interruption

Our records show that particular order was requested to be expired by the user. When that happens, the staged data are deleted. If you did this in error, you will need to order the data again.

Sean
by OB.DAAC - SeanBailey
Mon Feb 28, 2022 9:09 am America/New_York
Forum: Questions/Comments
Question: Annual climatology
Replies: 1

Re: Annual climatology

An annual climatology (in the sense of how we generate monthly and seasonal climatologies) does not make sense, so we don't produce one. However, we do produce an annual product (means for a given year). If you can explain what it is you are seeking to accomplish, we may be better able to assist you...