Transcript The Global Riometer Array - science aims and status EoI: 555

EoI: 555
The Global Riometer Array
- science aims and status
What is GLORIA?
Status and Planning
GLORIA and GAIA
Science Aims
New data products
Beyond GLORIA: Science and Public Outreach
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
GLORIA is an international collaborative
program, involving twelve countries (and
growing), with the aim of understanding the
coupling mechanism between the solar wind,
magnetosphere and the ionosphere.
For IPY:
Continuous operations
Easily accessible data (single point)
Overarching, collaborative science aims
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
What is a Riometer
Relative Ionospheric Opacity Meter using Extra Terrestrial Electromagnetic
Radiation
A sensitive radio receiver (usually
between 20 and 50 MHz
Monitors the cosmic radio noise
The attenuation through the D-layer
gives an indication of the path-integrated
electron density
Predominantly caused by >30 keV
electrons
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Events in riometer data
range from
Small
Large
spatial scales
Short
Long
temporal scales
Courtesy of E. Spanswick
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
50+ currently operating riometers
22 imaging riometers
A truly inter-hemispheric array
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Plans for new developments
Two new imaging riometers in Norway
Refit of the Ny Ålesund imaging
riometer
Iqualuit imager will move to Fort Smith
Four 16-beam AGOs set up in Antarctica
Plans for an imaging riometer on Bear
Island
Suggestions for a mid-latitude wide
beam array in Europe
An additional 16 beam riometer in
Antarctica
Installation of 17 new widebeams in
Canada
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
13 riometers are already in the
Canadian sector
12 - 17 extra instruments are being
deployed by Natural Resources Canada.
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
www.dcs.lancs.ac.uk/iono/cgi-bin/riometers
Operating
Not Operating
?
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Unknown
GAIA
GLORIA
Provide summary plots
(line plots and
keograms) and
eventually access to the
riometer data
Refers to the network of
instruments.
In-depth information on
available sites
Focal point for
collaboration and
outreach
New data products and
methods of data
visualization
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
GLORIA
Science
Magnetosphere/Ionosphere Coupling
Aeronomy
Gloria is particularly useful
when used in conjunction with
other instruments
and data sets
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Energetic particle precipitation into the
middle atmosphere triggered by a coronal
mass ejection
(Clilverd et al., 2007)
Combining VLF, balloon and
riometer data to investigate
relativistic electron precipitation
at the onset of a geomagnetic
storm.
Energetic Electron Precipitation during Sawtooth
Injections (Kavanagh et al., 2007)
Combining riometer,
magnetometer and satellite data
to investigate global energetic
electron precipitation signatures
during periodic substorms
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Science Goals
Most science goals from the community have been
magnetosphere-ionosphere-coupling based.
Several goals were decided at the 2nd Riometer
Workshop in Banff, 2006, e.g.
 What role do ULF waves play in the evolution of ring
current and radiation belt particles?
 What is the cause of inter-hemispheric asymmetries in
particle precipitation?
 What is the spatial scale and temporal evolution of
regions of relativistic electron loss?
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Identification of Electron Injection
(Spanswick et al., 2007)
Total Flux Criteria
• Substorm Associated
Dispersionless
Injection
• 3 min. “rise time”
• raised flux for > 15min
Dispersed
3
minutes
Dispersionless
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Courtesy of E. Spanswick
Radial Extent
- The injection region can expand to
> 5 Re in less than 10 minutes
dispersed
t = + 2.7 min
ONSET
t=0
expansion
t = + 6.5 min
t = + 2.5 min
dispersed
There is always a time delay between the
onset of injections across latitude
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Courtesy of E. Spanswick
Azimuthal Extent
- simultaneous injection
With increased instruments we have better
resolution measurements.
We can also apply the technique in
Fennoscandia with the chain of imaging
and widebeam riometers.
We can use the imaging riometers to
examine small scale changes in the
injection region.
Courtesy of E. Spanswick
GLORIA provides valuable support for
satellite and radar measurements by
offering a large scale spatial context for
their point measurements.
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
• Global maps of absorption
– Conversion to
conductance/characteristic energy
– Course resolution but useful in an age of
no space based imagers
• Scintillation maps
– can turn this problem into a bonus for Fregion studies
• Routine injection region identification
– supplement the geostat. satellites
• ULF precipitation index
– A tracer for radiation belt dynamics
• Access to absorption models
– Empirical
– Data assimilation?
Can we put GLORIA into
AMIE or something else?
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Global images that are
very coarse grained
spatially, but with high
time resolution,
continuous coverage,
and in regions very high
spatial resolution.
Data
Products
GLORIA community resolutions
- decided at the 2nd Riometer Workshop,
Banff, 2006
Data Access – “All members of the GLORIA community
represented at the 2nd International Workshop on Riometry
agree to work towards truly open data policies. Ideally, open
means no registration and password, and science-level data
available via (among other options) open anonymous FTP sites.”
- Excellent for IPY
Data Formats – “All members of the GLORIA community
represented at the 2nd International Workshop on Riometry
agree to produce files for dissemination in a common agreed
upon data format. It was further agreed that this format will be
CDF.”
- A GLORIA Data Format Working Group has been formed to
detail meta-data, generate web based instructions and
produce example programs for CDF production
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
GLORIA
in IPY and beyond
The riometers operate 24/7 constantly sampling the
cosmic radio noise.
New data products will be developed for community
use during the IPY and thereafter. Lancaster intends
to pursue funding from the EU to facilitate this.
We hope to gain some funding to help bring some
neglected data sets up to standard.
What about later….?
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
A GLORIA Legacy:
We have…
•
•
•
•
•
•
•
Data sharing agreements (GloRiA,…).
Data and metadata format agreements (GAIA,…).
A multitude of data access facilities.
Processing tools.
Visualisation tools.
Models.
Jointly-run instruments.
We have the building blocks already!
Now we just have to package them…
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Courtesy of M. Grill
A GLORIA Legacy:
We have…
•
•
•
•
•
•
•
Data sharing agreements (GloRiA,…).
Data and metadata format agreements (GAIA,…).
A multitude of data access facilities.
Processing tools.
Visualisation tools.
Models.
Jointly-run instruments.
We have the building blocks already!
Now we just have to package them…
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Courtesy of M. Grill
A GLORIA Legacy:
We have…
•
•
•
•
•
•
•
Data sharing agreements (GloRiA,…).
Data and metadata format agreements (GAIA,…).
A multitude of data access facilities.
Processing tools.
Visualisation tools.
Models.
Jointly-run instruments.
We have the building blocks already!
Now we just have to package them…
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Courtesy of M. Grill
A GLORIA Legacy:
We have…
•
•
•
•
•
•
•
Data sharing agreements (GloRiA,…).
Data and metadata format agreements (GAIA,…).
A multitude of data access facilities.
Processing tools.
Visualisation tools.
Models.
Jointly-run instruments.
We have the building blocks already!
Now we just have to package them…
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Courtesy of M. Grill
A GLORIA Legacy:
We have…
•
•
•
•
•
•
•
Data sharing agreements (GloRiA,…).
Data and metadata format agreements (GAIA,…).
A multitude of data access facilities.
Processing tools.
Visualisation tools.
Models.
Jointly-run instruments.
We have the building blocks already!
Now we just have to package them…
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Courtesy of M. Grill
A GLORIA Legacy:
We have…
•
•
•
•
•
•
•
Data sharing agreements (GloRiA,…).
Data and metadata format agreements (GAIA,…).
A multitude of data access facilities.
Processing tools.
Visualisation tools.
Models.
Jointly-run instruments.
We have the building blocks already!
Now we just have to package them…
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Courtesy of M. Grill
Put an i in front!
Gather it all into a sexy, highperformance, multi-platform, open
source, graphical 3D interface.
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
picture from http://www.123macmini.com/
A top-down approach!
•
•
•
•
Approach so far: bottom-up
A lot of seriously good work has gone into backends.
Terabytes of data, available in various formats, quite fast.
Sophisticated processing.
•
•
•
•
Ease-of-use.
Truly multi-instrument.
Intuitively query space and time.
Visualise, model, watch, project, summarise.
Important!
•
And still get all the raw data in an instant whenever
you like!
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Courtesy of M. Grill
Ever used Google Earth or NASA world wind?
Click-zoom-done
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Ever used Google Earth or NASA world wind?
Click-zoom-done
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Ever used Google Earth or NASA world wind?
Click-zoom-done
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Ever used Google Earth or NASA world wind?
Click-zoom-done
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Ever used Google Earth or NASA world wind?
Click-zoom-done
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
Our vision…
i
A distributed, redundant data access,
translation,
cachingagreements,
and dissemination
A
sexy,
multiBuilt
on high-performance,
existing
models,
layer,
including
real-time
and
near-realplatform,
open
source,
graphical
3D
processing
tools,
repositories.
time
streaming and notification capabilities.
interface.
Put an i in front!
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting
EKSNoARIA/TKeLi
The European Knowledge Saturation and
Northern All InstRument Image Access ToolKit
with eLectronic infrastructure
The name might need
some work…
A. J. Kavanagh, 7 February 2007 IPY Cluster 63: Kick-off meeting