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![]() Site Crew 2011 PHOTO: E. STOCKARD |
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JUN2011 | Continuing with tower and dish maintenance (when it's not snowing!). |
MAY2011 | ![]() |
APR2011 | Additional channels added to the RADAC system allowing for a lot more flexibility, including simultaneous measurements of both the up- and down-shifted plasma lines, raw data sampling, the addition of light-ion measurements concurrent with standard operating modes, etc. |
MAR2011 | Up-converter installed, ready to let the transmitter be controlled by the RADAC (RAdar Data ACquisition) system, and also allowing for sampling of the transmitted pulses. |
FEB2011 | Doing plasma line runs, coordinated with EISCAT Svalbard Radar, for Asti Bhatt of Millstone Hill. |
JAN2011 | Surveillance radars are fully refurbished. |
DEC2010 | Robert Michell and Marilia Samara, both from Southwest Research Institute, have installed a narrow-field imager for the season. Lots of radar operations with the new tube. |
NOV2010 | The new CPI klystron arrives and is installed. Data acquisition begins with baking and tuning on 13 November. |
Katey Anthony and assistant visit from the University of Alaska, Fairbanks, and collect data for their study on methane trapped in lake ice. | |
OCT2010 | Making preparations for receiving and installing the new klystron. |
SEP2010 | ![]() |
We have a new vehicle! The used Land Cruiser from Nuuk was just delivered from the ship. | |
AUG2010 | ![]() |
JUL2010 | Christian departs, back to Denmark. Best wishes to him and many thanks for his contributions over four years at the site. |
JUN2010 | Susanne Toball, a graduate student at the Karlsruhe Institute of Technology in Germany, visits for a week collecting particle samples for her dissertation. |
MAY2010 | CPI tells us they have had a failure in the assembly process of the new tube. It will not be ready for delivery in June, as planned, but we are hopeful it will be ready in August. |
APR2010 | The old Lytton klystron has failed. The performance of this tube had been slowly degrading since it was re-installed in late August. Each time the system was brought up, it requqired two operators for many hours before it stabilized enough to allow the normal one-person operation. As a result, we have been scheduling the experiment to be contiguous, as much as possible. Unfortunately, this tube cannot be rebuilt again. We are off the air until the new klystron is delivered, hopefully in June. Major maintenance tasks are being scheduled to take advantage of this downtime. |
Site crew provides assistance to the University of Colorado, Boulder, and NOAA campaign for validating their new lidar system, CAPABL (Cloud and Aerosol, Polarization and Backscatter Lidar), before it's deployed to Summit Camp. | |
MAR2010 | The new Color All-Sky Imager (CASI) is installed and tested. Data have been archived and acces is at http://transport.sri.com/asicat/availability with keograms, summary movies, and much more. |
FEB2010 | ![]() |
JAN2010 | Injectors replaced in E3 (the 600 kW generator-set that powers the ISR). |
DEC2009 | The National Space Center at Denmark's Technical University (DTU) has now taken over the Greenland magnetometer chain, as well as some of the other instruments DMI had deployed locally. These are now under the direction of our old friend Dr. Eigel Friis-Christensen and we are looking forward to many years of fruitful collaboration. |
NOV2009 | Run scheduled in conjunction with the new RISR-N (northward looking AMISR at Resolute Bay, Canada) in response to a predicted solar Corotation Interaction Region. |
OCT2009 | New engine replaces 26-year old original. This is one of two "house power" diesel generators, 180 kW each, used alternately to provide 24/7 power to the facility. |
SEP2009 | The Lytton klystron tube has been resurrected. After two weeks off-line to reconfigure the modulator socket, plumbing and electronics (and baking and tuning!), we are back on the air with the old spare klystron in ample time to perform the 10-day Equinox Wind Reversal world day run. |
AUG2009 | Anja Strømme takes over as Principal Investigator! |
The CPI klystron has failed. This tube cannot be rebuilt again so the old Lytton tube will be installed. Fortunately, a new CPI klystron was ordered earlier this month with the special stimulus funding. It's scheduled for delivery June 2010. | |
Upgrades done by visitors on the HF Imaging system (Dartmouth College) and the CCD Spectrograph (Embry-Riddle Aeronautical University). | |
JUL2009 | Eggert returns to Kellyville and resumes his position as site supervisor. He and Christian again team up with their EE design and implementation skills. |
JUN2009 | ![]() |
MAY2009 | New RADAC (RAdar Data ACquisition) system now on-line with three channels. This was concurrent with several modifications to the front-end of the receive path. The RADAC system was developed for the AMISRs and is used at PFISR and RISR-N. The addition of three more digital receiver channels is planned, which will allow for simultaneous measurements of both the up- and down-shifted plasma lines and the addition of light-ion measurements concurrent with the standard operating modes. |
APR2009 | The Danish Meteorological Institute (DMI) announces it has decided to withdraw from their activities in the field of geomagnetism, to be finalized by the end of this year. |
MAR2009 | The IPY (International Polar Year) which began in March 2007 has now ended. The 30-hour bi-weekly runs that we've been doing, coordinated with the other high-latitude ISRs, are now complete. |
FEB2009 | No Stratospheric Warming event has occurred this month, so no 10-day world day run for that. |
JAN2009 | Welcome aboard to John Fremming! John is a certified electrician from Denmark and will be a welcome addition to the crew. |
DEC2008 | Continuing with "normal" runs: bi-weekly IPY high-latitude ISR runs, Themis coverage coordinated with the HIRISE instrument for detection of the cusp, GUVI satellite overpasses, etc. |
NOV2008 | Two members of the Danish Parliament come to the site and have a tour. |
OCT2008 | Troubleshooting some strange symptoms and have traced it to a faulty internal switch in the exciter. |
SEP2008 | It was determined that one of the three elevation rotary joints has gone bad. It's been replaced with the good spare and is being returned to the US for repair/refurbishment. |
AUG2008 | ![]() |
SR run will help determine if there are gravity waves caused by solar eclipse on 1 August. | |
JUL2008 | ![]() |
JUN2008 | After 12 years on-site, Eggert returns to Iceland -- he will be sorely missed. With the planned pull-out of DMI, Christian's position has disappeared but he has become an SRI employee and the new site supervisor. |
DEC2002 | ![]() Fall AGU Presentations: Semeter et al, "Observed relationship between auroral rays and intense ion upflows at the polar cap boundary." Thayer et al, "Observations of the high-latitude ionospheric response to the onset of the April 2002 storm." |
AUG2002 | Search for Naturally Enhanced Ion Lines inconclusive. More investigations to be made. |
APR2002 | World day storm shows large Joule heating event. |
JAN2001 | ISR/optical detection of cusp, led by Pallamraju Duggirala, Boston U. |
2000-2001 | Topical collection in JGR Atmospheres on Layered Phenomena of the Mesopause Region |