MERIS atmospheric correction effects using MEGS(c)

This tutorial builds upon the ESA ODESA (Optical Data Processor of the European Space Agency) project. More context information is available from the project web page.

Getting started

The Getting started guide to implement a "MERIS Level 1 to Level 2 atmospheric correction using MEGS(c)" application on Terradue's Developer Cloud Sandbox platform, a set of Cloud services to develop, test and exploit scalable, distributed Earth Science processors.

To run this application, you will need a Developer Cloud Sandbox that can be requested from Terradue's Portal, provided user registration approval.

Installation

Log on the developer sandbox and run these commands in a shell:

• Install Java 7

sudo yum install -y java-1.7.0-openjdk

• Select Java 7

sudo /usr/sbin/alternatives --config java

This will show on the terminal window:

There are 3 programs which provide 'java'.

  Selection    Command
-----------------------------------------------
 + 1           /usr/java/jdk1.6.0_35/jre/bin/java
   2           /usr/lib/jvm/jre-1.5.0-gcj/bin/java
*  3           /usr/lib/jvm/jre-1.7.0-openjdk.x86_64/bin/java

Enter to keep the current selection[+], or type selection number:

Select java 1.7 out of the menu options by typing the correct number (here it's 3).

• Install the application from github

cd
git clone [email protected]:ocean-color-ac-challenge/Participant-F.git
cd Participant-F
mvn install

• Install the application from rpm

curl -L -O https://github.com/ocean-color-ac-challenge/Participant-D/releases/download/v1.0/Participant-F-1.0-ciop.noarch.rpm
sudo yum -y install Participant-F-1.0-ciop.noarch.rpm

Submitting the workflow

• Via the Sandbox shell

Run this command in a shell:

ciop-run

• Via the Web Processing Service dashboard tab

Use your browser to go to the Sandbox dashboard tab at the address http:///dashboard

Click on the Invoke tab

Below the "Process List" click on Participant F

Fill the parameters and click submit.

Test the application

Test Participant-F-01

• Test Procedure

Invoke the application via the Dashboard with the parameters listed in the test inputs specification

• Inputs specification

Parameter	Value
Data Package URL	https://challenges.esa.int/eceo/datapackage/RRPAR/description?key=9d79148d-3e17-414b-9983-e4cef9e88ec6
Start Time	2002-03-01T00:00:00Z
End Time	2012-05-09T23:59:59Z
Bounding Box	-180,90,180,-90
List of POI for reflectance extraction	BOUS,43.367,7.9|AAOT,45.314,12.508|MOBY,20.828,-157.193
Flag to trigger the publishing of Level 2 products generated	true
Flag to extract POI reflectances	false

• Outputs specification

Output	Size
MER_RR__2PNACR20060730_093546_000021432049_00480_23079_0000.N1.tgz	393.95 MB
MER_RR__2PNACR20060730_093546_000021432049_00480_23079_0000.png	13.01 MB
MER_RR__2PRACR20030306_201313_000026082014_00243_05307_0000.N1.tgz	458.53 MB
MER_RR__2PRACR20030306_201313_000026082014_00243_05307_0000.png	21.89 MB
MER_RR__2PRACR20040903_201756_000026282030_00057_13137_0000.N1.tgz	466.59 MB
MER_RR__2PRACR20040903_201756_000026282030_00057_13137_0000.png	23.12 MB
MER_RR__2PRACR20050504_093419_000026382037_00022_16609_0000.N1.tgz	454.38 MB
MER_RR__2PRACR20050504_093419_000026382037_00022_16609_0000.png	18.13 MB
MER_RR__2PRACR20070920_092716_000026302061_00437_29048_0000.N1.tgz	470.38 MB
MER_RR__2PRACR20070920_092716_000026302061_00437_29048_0000.png	17.06 MB
MER_RR__2PRACR20080816_092020_000026302071_00165_33786_0000.N1.tgz	469.77 MB
MER_RR__2PRACR20080816_092020_000026302071_00165_33786_0000.png	18.2 MB

• Test pass/fail criteria

All products listed in test outputs specification are generated

Test Participant-F-02

• Test Procedure

Invoke the application via the Dashboard with the parameters listed in the test inputs specification

• Inputs specification

Parameter	Value
Data Package URL	https://challenges.esa.int/eceo/datapackage/FRSPAR/description?key=495f181f-47d3-4668-b717-d36d4a560837
Start Time	2002-03-01T00:00:00Z
End Time	2012-05-09T23:59:59Z
Bounding Box	-180,90,180,-90
List of POI for reflectance extraction	CHINA,27,122|CHINA2,30,124|CHINA3,22,126
Flag to trigger the publishing of Level 2 products generated	true
Flag to extract POI reflectances	false

• Outputs specification

Output	Size
MER_FRS_2PPEPA20040711_020449_000002422028_00275_12353_1787.N1.tgz	585.52 MB
MER_FRS_2PPEPA20040711_020449_000002422028_00275_12353_1787.png	24.37 MB
MER_FRS_2PPEPA20040717_021529_000002642028_00361_12439_1968.N1.tgz	751.59 MB
MER_FRS_2PPEPA20040717_021529_000002642028_00361_12439_1968.png	22.65 MB

• Test pass/fail criteria

All products listed in test outputs specification are generated

Test Participant-F-03

• Test Procedure

Invoke the application via the Dashboard with the parameters listed in the test inputs specification

• Inputs specification

Parameter	Value
Data Package URL	https://challenges.esa.int/eceo/datapackage/RRPAR/description?key=9d79148d-3e17-414b-9983-e4cef9e88ec6
Start Time	2002-03-01T00:00:00Z
End Time	2012-05-09T23:59:59Z
Bounding Box	-180,90,180,-90
List of POI for reflectance extraction	BOUS,43.367,7.9|AAOT,45.314,12.508|MOBY,20.828,-157.193
Flag to trigger the publishing of Level 2 products generated	false
Flag to extract POI reflectances	true

• Outputs specification

Output	Size
MER_RR__2PNACR20060730_093546_000021432049_00480_23079_0000.dim.txt	3.34 KB
MER_RR__2PRACR20030306_201313_000026082014_00243_05307_0000.dim.txt	2.62 KB
MER_RR__2PRACR20040903_201756_000026282030_00057_13137_0000.dim.txt	2.66 KB
MER_RR__2PRACR20050504_093419_000026382037_00022_16609_0000.dim.txt	3.36 KB
MER_RR__2PRACR20070920_092716_000026302061_00437_29048_0000.dim.txt	3.36 KB
MER_RR__2PRACR20080816_092020_000026302071_00165_33786_0000.dim.txt	3.38 KB

• Test pass/fail criteria

All products listed in test outputs specification are generated

Test Participant-F-04

• Test Procedure

Invoke the application via the Dashboard with the parameters listed in the test inputs specification

• Inputs specification

Parameter	Value
Data Package URL	https://challenges.esa.int/eceo/datapackage/FRSPAR/description?key=495f181f-47d3-4668-b717-d36d4a560837
Start Time	2002-03-01T00:00:00Z
End Time	2012-05-09T23:59:59Z
Bounding Box	-180,90,180,-90
List of POI for reflectance extraction	CHINA,27,122|CHINA2,30,124|CHINA3,22,126
Flag to trigger the publishing of Level 2 products generated	false
Flag to extract POI reflectances	true

• Outputs specification

Output	Size
MER_FRS_2PPEPA20040711_020449_000002422028_00275_12353_1787.dim.txt	4.1 KB
MER_FRS_2PPEPA20040717_021529_000002642028_00361_12439_1968.dim.txt	3.24 KB

• Test pass/fail criteria

All products listed in test outputs specification are generated

Community and Documentation

To learn more and find information go to

• Developer Cloud Sandbox service

Authors (alphabetically)

• Fabrice Brito
• Fabio D'Andria
• Samantha Lavender

License

Copyright 2015 Terradue Srl

Licensed under the Apache License, Version 2.0: http://www.apache.org/licenses/LICENSE-2.0