Description
This dataset comprises MISR-derived output from a comprehensive analysis of Icelandic volcano eruptions (Eyjafjallajokull 2010, Grimsvotn 2011, Holuhraun 2014-2015). The data presented here are analyzed and discussed in the following paper: Flower, V.J.B., and R.A. Kahn, 2020. The evolution of Icelandic volcano emissions, as observed from space in the era of NASA’s Earth Observing System (EOS). J. Geophys. Res. Atmosph. (in press).
The data is subdivided by volcano of origin, date and MISR orbit number. Within each case folder there are up to 11 files relating to an individual MISR overpass. Files include plume height records (from both the red and blue spectral bands) derived from the MISR INteractive eXplorer (MINX) program, displayed in: map view, downwind profile plot (along with the associated wind vectors retrieved at plume elevation), a histogram of retrieved plume heights and a text file containing the digital plume height values. An additional JPG is included delineating the plume analysis region, start point for assessing downwind distance, and input wind direction used to initialize the MINX retrieval. A final two files are generated from the MISR Research Aerosol (RA) retrieval algorithm (Limbacher, J.A., and R.A. Kahn, 2014. MISR Research-Aerosol-Algorithm: Refinements For Dark Water Retrievals. Atm. Meas. Tech. 7, 1-19, doi:10.5194/amt-7-1-2014). These files include the RA model output in HDF5, and an associated JPG of key derived variables (e.g. Aerosol Optical Depth, Angstrom Exponent, Single Scattering Albedo, Fraction of Non-Spherical components, model uncertainty classifications and example camera views).
File numbers per folder vary depending on the retrieval conditions of specific observations. RA plume retrievals are limited when cloud cover was widespread or the solar radiance was insufficient to run the RA. In these cases the RA files are not included in the individual folders.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| View this dataset's data citation policy | HTML | How to cite ASDC data | Open resource |
| Download this dataset | HTML | ASDC Direct Data Download for ICEVOLC_FlowerKahn2020_1 | Open resource |
| View documentation related to this dataset | HTML | ASDC Data and Information for MISR | Open resource |
| This dataset's landing page | HTML | DOI data set landing page for ICEVOLC_FlowerKahn2020_1 | Open resource |
| Get a related visualization | HTML | The MISR INteractive eXplorer (MINX) program, for determining the altitude of aerosol plumes and associated wind vectors using the MISR Level 1B2 multi-angle multi-spectral radiance imaging products. | Open resource |
| Google Scholar search results | HTML | Search results for publications that cite this dataset by its DOI. | Open resource |
| Download this dataset through Earthdata Search | HTML | Earthdata Search for ICEVOLC_FlowerKahn2020_1 (NASA Application to search, discover, visualize, refine, and access NASA Earth Observation data) | Open resource |