ASDC | ICEVOLC_FlowerKahn2020

MISR_Volcano_Research Level 4

Entry Title: MISR Derived Case Study Data for Iceland Volcanic Eruptions (Eyjafjallajokull, Grimsvotn, Holuhraun) Including Geometric Plume Height and Qualitative Radiometric Particle Property Information

Entry ID: ICEVOLC_FlowerKahn2020_1

Aerosols

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.

DOI

10.5067/Terra/MISR_Volcano_Research/ICEVOLC_FLOWERKAHN2020_1

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Resources and Documentation

Earthdata Forum

GET RELATED VISUALIZATION

The MISR INteractive eXplorer (MINX) program, for determining the altitude of plumes and performing particle property analysis using the MISR standard aerosol retrieval product, is a stand-alone software package developed at the NASA Jet Propulsion Laboratory (JPL) and distributed through Github. This program allows the user to ingest the MISR Level 1 data, select regions for analysis and output visualizations of features, like those included in this data set.

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DATA CITATION POLICY

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GENERAL DOCUMENTATION

ASDC Data and Information for MISR

From GCMD Science Keywords:

AEROSOLS
ASH/DUST COMPOSITION > ERUPTION DYNAMICS > VOLCANIC ACTIVITY
GAS/AEROSOL DISPERSION > ERUPTION DYNAMICS > VOLCANIC ACTIVITY
AEROSOL OPTICAL DEPTH/THICKNESS
ERUPTION DYNAMICS > VOLCANIC ACTIVITY
VOLCANO > TECTONIC LANDFORMS
ASH/DUST DISPERSION > ERUPTION DYNAMICS > VOLCANIC ACTIVITY
TECTONIC LANDFORMS
VOLCANO OCCURRENCES > VOLCANIC ACTIVITY
GEOMORPHIC LANDFORMS/PROCESSES
DUST/ASH/SMOKE
VOLCANIC GASES > ERUPTION DYNAMICS > VOLCANIC ACTIVITY
VOLCANIC ACTIVITY
AEROSOL PARTICLE PROPERTIES
VOLCANIC EXPLOSIVITY > ERUPTION DYNAMICS > VOLCANIC ACTIVITY
SULFATE PARTICLES

Data Distribution

File Format(s):

Other (Subdirectories) , Image (not GIF) , Other (.txt) , Image (not GIF) , HDF5

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Spatial Information

Spatial Coverage: (50, 70), (-30, 5)
Spatial Coverage Type: Horizontal Vertical
Horizontal Resolution Range: 1 km - < 10 km or approximately .01 degree - < .09 degree
Vertical Resolution Range: 100 meters - < 1 km
Vertical Resolution: 250 m
Coordinate System: Geodetic
Granule Spatial Representation: Cartesian

Locations

EUROPE NORTHERN EUROPE ICELAND VERTICAL LOCATION STRATOSPHERE TROPOSPHERE

Temporal Information

Temporal Coverage: 2010-04-15 - 2015-02-21

Platforms

Earth Observation Satellites

Terra

Earth Observing System, TERRA (AM-1)

MISR

Multi-Angle Imaging SpectroRadiometer

Metadata Dates

Created on 2020-08-06

Last updated on 2021-01-05