Comments on: Imaging Ash http://earthobservatory.nasa.gov/blogs/elegantfigures/2010/08/09/imaging-ash/?src=elegantfigures-rss On data visualization and information design on the Earth Observatory. Wed, 24 Apr 2013 19:40:10 +0000 hourly 1 http://wordpress.org/?v=3.5.1 By: Peter Caltner http://earthobservatory.nasa.gov/blogs/elegantfigures/2010/08/09/imaging-ash/comment-page-1/#comment-50 Peter Caltner Fri, 13 Aug 2010 19:37:42 +0000 http://earthobservatory.nasa.gov/blogs/elegantfigures/?p=4#comment-50 I have been following E.O. for years and appreciate all the great stuff you publish. Such background information is an extra treat. Thank you for that. I learned about. BTW, often when I look at the published images I wonder how it has been made. Some secrets of these ash clouds have been revealed. I’m looking forward to the next insight report.

]]> By: Dan Pendick (gogblog) http://earthobservatory.nasa.gov/blogs/elegantfigures/2010/08/09/imaging-ash/comment-page-1/#comment-47 Dan Pendick (gogblog) Fri, 13 Aug 2010 17:47:10 +0000 http://earthobservatory.nasa.gov/blogs/elegantfigures/?p=4#comment-47 Welcome to the Goddard blogpodcastotwittersphere!

Great article — keep them coming.

]]> By: joy breeze http://earthobservatory.nasa.gov/blogs/elegantfigures/2010/08/09/imaging-ash/comment-page-1/#comment-31 joy breeze Thu, 12 Aug 2010 19:46:52 +0000 http://earthobservatory.nasa.gov/blogs/elegantfigures/?p=4#comment-31 Thank you for making, what is usually for me, incomprehensible stuff, comprehensible.
NASA is awesome. Such generosity. My sincere gratitude.

]]> By: Robert Simmon http://earthobservatory.nasa.gov/blogs/elegantfigures/2010/08/09/imaging-ash/comment-page-1/#comment-29 Robert Simmon Thu, 12 Aug 2010 16:57:17 +0000 http://earthobservatory.nasa.gov/blogs/elegantfigures/?p=4#comment-29 Thanks for all the replies & compliments. I made the mistake of heading out on leave the morning after launching the blog, so I can’t respond in depth at the moment. The good news is that travel always gives me ideas, and I’ll have a new post up soon after I get back.

Demetrio:
The black dots are dead zones with unknown size. They’re rendered a bit differently (black outline with semi-transparent fill) in the large version because the high-resolution allowed me to use transparency to give a better indication of the precise location of dead zones where many are clustered together (i.e. Western Europe). Solid black dots simply merge together. I think locations that appear to be inland are on estuaries. I don’t have the data with me so I can’t check at the moment. In any case, that map will probably get its own post before too long.

Pablo:
I have never even considered using HDR (high dynamic range) techniques to merge multiple bands into a single channel, and have absolutely no idea how (or if) it would work. It’s certainly something to think about in the future.

]]> By: Pablo Zenteno http://earthobservatory.nasa.gov/blogs/elegantfigures/2010/08/09/imaging-ash/comment-page-1/#comment-27 Pablo Zenteno Thu, 12 Aug 2010 14:22:14 +0000 http://earthobservatory.nasa.gov/blogs/elegantfigures/?p=4#comment-27 Thank you Robert, great blog!

it is very helpful the way you describe all your steps in creating this really elegant scientific data and also making it very comprehensible to all the people.

One idea came into my mind, to use a HDR photo software and introduce 2 bands for surface cloud temperature (11 and 12µm) and 1 band for cloud top altitude (14µm).

]]> By: Demetrio http://earthobservatory.nasa.gov/blogs/elegantfigures/2010/08/09/imaging-ash/comment-page-1/#comment-15 Demetrio Wed, 11 Aug 2010 22:37:27 +0000 http://earthobservatory.nasa.gov/blogs/elegantfigures/?p=4#comment-15 Robert,
A question on the “aquatic” or “marine” dead zones map – hard to tell which is which if one looks at the title and reads the text (freshwater included?); it has your name as co-author. On the text it mentions black dots as unknowns. When I zoom in, I see circles with black outline. Also many fall on land… can you explain? Thanks. Demetrio

]]> By: Ingrid Chettleburgh http://earthobservatory.nasa.gov/blogs/elegantfigures/2010/08/09/imaging-ash/comment-page-1/#comment-14 Ingrid Chettleburgh Wed, 11 Aug 2010 20:51:37 +0000 http://earthobservatory.nasa.gov/blogs/elegantfigures/?p=4#comment-14 Robert
I found your article documented your work flow and ideas well. It was easy to follow and demonstrated the benefits of imagery. As a high school teacher, it provides a depth of information for my students to review and comment on in their study on volcanology. Excellent work.

]]> By: Ian Hunter http://earthobservatory.nasa.gov/blogs/elegantfigures/2010/08/09/imaging-ash/comment-page-1/#comment-9 Ian Hunter Wed, 11 Aug 2010 08:00:31 +0000 http://earthobservatory.nasa.gov/blogs/elegantfigures/?p=4#comment-9 What a wonderful job NASA’s EO group are doing in bringing meteorological and oceanographic events/ phenomena to the Internet public via such a variety of satellite imagery. This article is especially well-presented. Thank you.

It was particularly interesting to hear of a graphics editing program being used to enhance certain features on satellite images – something I have found very useful.

]]> By: Michele Gomis http://earthobservatory.nasa.gov/blogs/elegantfigures/2010/08/09/imaging-ash/comment-page-1/#comment-5 Michele Gomis Wed, 11 Aug 2010 01:06:07 +0000 http://earthobservatory.nasa.gov/blogs/elegantfigures/?p=4#comment-5 I have only a little blog where my art is posted but this blog is highly informative and I hope you will continue with it indefinitely. Understanding how the final “product” gets constructed and finalized is a fascinating series of steps. Thank you!

]]> By: Frank B http://earthobservatory.nasa.gov/blogs/elegantfigures/2010/08/09/imaging-ash/comment-page-1/#comment-4 Frank B Wed, 11 Aug 2010 00:56:17 +0000 http://earthobservatory.nasa.gov/blogs/elegantfigures/?p=4#comment-4 Robert, this is a great article. The way you describe your complete workflow, complete with false-starts, dead ends, and problem solving, helps to provide some idea of how much work goes into creating these beautiful images.

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