Hello,
I would like to understand which ancillary data are downloaded and what is the usefulness of these data.
For a very recent data file from S2-L1C (ie 20/05/2018), I have some error messages and acolite stops : the problem is some missing downloaded file (from https://oceancolor.gsfc.nasa.gov , see error message below)
Thanks for any help !
Vincent :
Error message :
Processing scene 1 of 1...
Gains False
{'B1': 1.0, 'B2': 1.0, 'B3': 1.0, 'B4': 1.0, 'B5': 1.0, 'B6': 1.0, 'B7': 1.0, 'B8': 1.0, 'B8A': 1.0, 'B9': 1.0, 'B10': 1.0, 'B11': 1.0, 'B12': 1.0}
2018-05-22 09:15:07 - Processing L1C_T31TFJ_A006283_20180520T103458
Elapsed Time: 4.885356664657593
<!DOCTYPE html><html lang="en-US"><head><meta http-equiv="content-type" content="text/html;charset=utf-8"><meta name="ROBOTS" content="NOARCHIVE"><title>ERROR @ OceanColor Biology Processing Group (OBPG)</title></head><body link=#323232 vlink=#323232 alink=#323232 style="background-color:#ffffff; color:#323232; font-size:175%"><br><hr color=#323232><center><h1><b>.:. ERROR .:.</b></h1><h2>OceanColor Biology Processing Group (OBPG)</h2><blockquote>Sorry, an error has occurred. Use the back button to return to the previous page or go to the <a href="https://oceancolor.gsfc.nasa.gov">Ocean Color Home Page</a>.</blockquote><br><hr color= #323232></body></html>
Exception in thread Thread-3:
Traceback (most recent call last):
File "/home/quinten/miniconda3/envs/work/lib/python3.6/threading.py", line 916, in _bootstrap_inner
File "/home/quinten/miniconda3/envs/work/lib/python3.6/threading.py", line 864, in run
File "/storage/Python/acolite/source/shared/download_file.py", line 29, in get_url
Exception: File download failed
Use of the ancillary data ?
Re: Use of the ancillary data ?
Hello Quinten and Vincent,
I've experienced the same issue with very recent data. Would this mean that ACOLITE cannot be used in a near-real time application ?
Thanks for your help,
Olivier
I've experienced the same issue with very recent data. Would this mean that ACOLITE cannot be used in a near-real time application ?
Thanks for your help,
Olivier
Re: Use of the ancillary data ?
Yes, for very recent data there are no ancillary data files available. For near realtime applications I would disable the use of ancillary data.
You can set this in your settings file (ancillary_data=False), this will use defaults for atmospheric ozone (uoz_default=0.3) and water vapour (uwv_default=1.5). If you have better values for your study area you can replace them in the settings file as well.
In a next version I will add a test for recent dates or when the ancillary data server is unreachable, so processing can proceed with no ancillary data even when the ancillary_data=True (and track this in the output file).
Quinten
You can set this in your settings file (ancillary_data=False), this will use defaults for atmospheric ozone (uoz_default=0.3) and water vapour (uwv_default=1.5). If you have better values for your study area you can replace them in the settings file as well.
In a next version I will add a test for recent dates or when the ancillary data server is unreachable, so processing can proceed with no ancillary data even when the ancillary_data=True (and track this in the output file).
Quinten
Re: Use of the ancillary data ?
Hi all
This should be fixed in the current version of ACOLITE (20180611.0). If the ancillary data is not yet present on the server, or the connection times out, the default values will be used.
Quinten
This should be fixed in the current version of ACOLITE (20180611.0). If the ancillary data is not yet present on the server, or the connection times out, the default values will be used.
Quinten