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CRF Experiment Confirms Accepted Oxidation Scheme of Proposed Diesel Alternative: Dimethyl Ether

Combustion Research Facility (CRF) researchers Kai Moshammer, Ahren Jasper, Arnas Lucassen, Arkke Eskola, Craig Taatjes, and Nils Hansen (all in Sandia’s Combustion Chemistry Dept.) as part of an international collaboration reported, in Journal of Physical Chemistry A, detecting and identifying previously undiscovered partially oxidized intermediates. This work provides experimental confirmation of the generally accepted dimethyl [...]

SWiFT Facility Prepared for More-Efficient Operations & Advanced Turbine-Turbine Wake-Interaction-Control Research

The SWiFT facility comprises three heavily instrumented and modified variable-speed, variable-pitch Vestas V27 turbines and two 60 m anemometer towers, with the first two turbines spaced three diameters apart, perpendicular to the prevailing oncoming wind, and the third turbine five diameters downwind (the turbines form a three, five-, six-rotor-diameter-length triangle). Two turbines are funded [...]

Sandia Develops Phased-Array Sources Based on Nonlinear Metamaterial Nanocavities

The SH-generating quantum well layer (pink) and the beam-shaping split-ring metamaterial resonators (the “C”-shaped structures). The phase-coherent emission from individual resonators opens the door for many beam-shaping applications, some of which are presented in the insets. Each device type can be achieved via proper design of individual metamaterial resonators and their arrangement on the [...]

Arctic Airspace Warning Area Established to Aid Research & Exploration

The red bar depicts the 40-mile-wide, 700-mile-long warning airspace now under management by Sandia personnel for DOE’s Atmospheric Radiation Measurement facilities. The space extends from a northern point of the US highway system to 400 miles short of the North Pole. The monitored space will better ensure the safety of climate and other experiments [...]

CRF Researchers Develop New Approach for Low-Cost Emissions Diagnostics

Monolithic dual-etalon cavity ring-down spectrometer. Modeling and experiments show that it is feasible to perform multiple-species detection at sub-ppm levels with a low-resolution broad-band infrared laser. Target measurement species include CO2, CH, N2O, NO2, SO2, HCl, and CH4, among others, simultaneously, and without process treatment or dehumidification of the exhaust sample—potentially reducing current [...]

NASA Award for Marginal Ice Zone Observations and Process Experiment (MIZOPEX)

Research team members prepare the Sierra Unmanned Aerial System for flight from Oliktok Point, Alaska. (Photo by Mark Ivey) Sandians Mark Ivey and Darin Desilets (both in Sandia’s Geophysics and Atmospheric Sciences Dept.) were included in a NASA Group Achievement Award “for outstanding achievement in executing the MIZOPEX using multiple classes of unmanned [...]

By | 2016-12-02T18:48:18+00:00 February 24th, 2015|Analysis, Climate, Modeling & Analysis, Monitoring, News, News & Events, Office of Science, Research & Capabilities, Sensing, Sensing & Monitoring|Comments Off on NASA Award for Marginal Ice Zone Observations and Process Experiment (MIZOPEX)

Climate Change Is the Subject of a New Book

A new book, Assessment of Climate Change in the South­west United States (published by Island Press), was released in May 2013. Vince Tidwell (Earth Systems Analysis Dept.) was the lead contributing author for the chapter on “Energy Impacts.” According to the press release, “the book blends the contributions of 120 experts in climate science, economics, [...]

By | 2016-12-02T18:48:53+00:00 August 1st, 2013|Analysis, Climate, Global Climate & Energy, Monitoring, News, News & Events, Sensing, Sensing & Monitoring, Water Security|Comments Off on Climate Change Is the Subject of a New Book

Sierra Unmanned Aerial Vehicle to Begin Flights Over Arctic Sea Ice

On July 16th, the Sierra, a unique unmanned aerial system (UAS) operated by the NASA Ames Research Center in northern California (learn more), began flights over the Arctic sea ice as part of the MIZOPEX (Marginal Ice Zone Observations and Processes Experiment) mission. MIZOPEX is an intensive observing campaign that will characterize the ocean surface, [...]

By | 2016-12-02T18:48:55+00:00 July 25th, 2013|Climate, Customers & Partners, Global, Monitoring, News, News & Events, Office of Science, Partnership, Sensing, Sensing & Monitoring|Comments Off on Sierra Unmanned Aerial Vehicle to Begin Flights Over Arctic Sea Ice

Unmanned Aircraft Test Flights Completed at Oliktok Point

In October 2012, a small flight team including staff from New Mexico State University (NMSU) and Sandia began the first in a series of test flights for the DOE Atmospheric Radiation Measurement (ARM) Facility to evaluate various unmanned aerial systems (UASs) in the frigid Arctic conditions at Oliktok Point, Alaska. For eight days, the team [...]

By | 2016-12-02T18:49:05+00:00 February 21st, 2013|Climate, Monitoring, News, News & Events, Sensing, Sensing & Monitoring|Comments Off on Unmanned Aircraft Test Flights Completed at Oliktok Point

The Rush to Exploit an Increasingly Ice-Free Arctic

The U.S. Coast Guard icebreaker Healy. It’s that time of year again, when we check in to see where the annual Arctic sea ice minimum will end up. We haven’t quite bottomed out at the end of the melt season, yet, but already 2012 has set new records for smallest Arctic sea ice extent and [...]

By | 2016-12-02T18:49:10+00:00 October 17th, 2012|Climate, Earth Sciences Research Center, Global, Global Climate & Energy, Modeling, Monitoring, News, News & Events, Sensing, Sensing & Monitoring|Comments Off on The Rush to Exploit an Increasingly Ice-Free Arctic