News Center

ARM Facility Insights at the 2014 AGU Fall Meeting
Dec 13, 2014 [ Facility News ]       
On Monday, December 15, ARM Facility leadership held the ARM Next Generation Town Hall at the 47th annual AGU Fall Meeting. Their presentation is being made available for those who are interested as well as a comprehensive list of the DOE research using ARM data at AGU. On Thursday, December 18, a press workshop will be held for the upcoming CalWater2 and ARM Cloud Aerosol Precipitation Experiment (ACAPEX), an interagency, interdisciplinary, field campaign starting in January.

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Validating Water Vapor Turbulence Measurements from Lidar
Dec 08, 2014 [ Research Highlights ]       
Turbulence in the convective boundary layer is important for redistributing water vapor and other atmospheric gases, sensible heat, and momentum. Turbulent mixing works over a wide range of scales from kilometers down to millimeters. The horizontal and vertical resolutions of most atmospheric models, such as general circulation and cloud resolving models, are too coarse to [...]

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Hail Generation and Melting in Deep Convective Clouds from the Perspective of Dual-polarization
Dec 02, 2014 [ Research Highlights ]       
Large hail is generated in vigorous convective updrafts which are commonly associated with columnar regions of enhanced differential reflectivity (ZDR columns) often capped with the depression of the cross-correlation coefficient ρhv measured by dual-polarization radars. After hailstones fall below the freezing level, they melt and produce large raindrops making a hail/rain mixture, which is characterized [...]

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ARM Educational Outreach Puts Fun Twist on Science Night
Dec 02, 2014 [ Education, Facility News ]       
Community STEM Event Draws Big Crowds In November, ARM communications staff and scientists participated in the 6th annual Chief Joseph Middle School Science Night in Richland, Washington. Hundreds of students, parents, and educators turned out for the popular community event, which is free and open to the public. This year’s theme was: “How we use science, [...]

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On the Right Track for Tropical Clouds
Nov 27, 2014 [ Research Highlights ]       
Researchers at Pacific Northwest National Laboratory and collaborators are hot on the trail of a large and lumbering atmospheric wave. Originating in the tropics, the intra-seasonal force wields influence on weather patterns around the world. Using high-resolution regional modeling along with field data, the scientists found that the frequency of the wave’s shallow-to-deep convective cloud [...]

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Supporting Scientist Positon for ARM at Lawrence Livermore National Laboratory
Nov 26, 2014 [ Employment Opportunities ]       
The Cloud Processes Research (CPR) Group within the Atmospheric, Earth and Energy Division (AEED) in the Physical and Life Sciences Directorate has an opening for a supporting scientist to join the Atmospheric Radiation Measurement (ARM) Climate Research Facility data infrastructure. The ARM Facility Infrastructure Team develops value-added products from ARM field measurements to support cloud [...]

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Collaborators from the United States and Brazil Gather in D.C. to Discuss GOAMAZON
Nov 20, 2014 [ Facility News ]       
Last month, researchers from the United States and Brazil came together at a symposium to present findings from their studies on the Amazon. The meeting, “FAPESP-U.S. Collaborative Research on the Amazon,” was organized by the São Paulo Research Foundation Fundação de Apoio à Pesquisa do Estado do São Paulo (FAPESP) in partnership with the U.S. Department [...]

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Double Bonus: Win-Win for Atmospheric Particles
Nov 18, 2014 [ Research Highlights ]       
It’s a slam dunk for scientists measuring atmospheric particle properties. Typically calculated from their chemical composition and size distribution data, the larger particles often escape characterization. Scientists at Pacific Northwest National Laboratory and the University of Colorado developed a new method that simultaneously connects two critical properties: real refractive index, a measure of how much [...]

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Around the World in 52 Months
Nov 14, 2014 [ Feature Stories and Releases ]       
The Department of Energy has selected six field campaigns to take place from 2015 through most of 2019. These new efforts kick off in the summer of 2015 at the Southern Great Plains site and take the first ARM Mobile Facility from Brazil to Ascension Island, located in the southeast Atlantic Ocean between South America and Africa, in spring 2016.

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University of Miami seeking Faculty in the Department of Atmospheric Sciences
Nov 07, 2014 [ Employment Opportunities ]       
The Department of Atmospheric Sciences at the University of Miami's Rosenstiel School of Marine and Atmospheric Science invites candidates for a tenure-track faculty position. Candidates with expertise in the experimental research areas of boundary layer meteorology, cloud and aerosol processes, radar meteorology and other types of remote and in-situ observations are especially welcome. The successful [...]

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Observing Warm Clouds in 3D Using ARM Scanning Cloud Radars and a Novel Ensemble Method
Nov 05, 2014 [ Research Highlights ]       
Boundary-layer clouds make a significant contribution to the planetary albedo and thus are fundamentally important to the Earth’s radiation budget. Due to their complex turbulent structures, coupled with a strong susceptibility to aerosol, they remain a key source of uncertainty in climate projections. While Atmospheric Radiation Measurement Climate Research Facility (ARM)’s long-term observations from vertically [...]

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Under the Radar—This Time in Retirement
Nov 05, 2014 [ Facility News ]       
After 30 years with Pacific Northwest National Laboratory, including the last two decades as leader of ARM’s radar engineering group, Kevin Widener retired this summer. Widener’s hard work and dedication to developing ARM’s one-of-a-kind cloud radar network were instrumental to the success and growth of the ARM Facility, which now boasts nearly three dozen radars. [...]

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Megasites Accept Mega Challenge: New Directions Take Formation in First Workshop
Nov 04, 2014 [ Facility News, Publications ]       
With the growing interest in high-resolution model simulations, the Department of Energy Climate Environmental Sciences Division is hosting a series of workshops to focus on key scientific needs, gaps, and priorities in process model understanding and climate model prediction through the strategic deployment and operation of routine high-resolution modeling at the future "megasites" at the North Slope of Alaska (NSA) and Southern Great Plains (SGP) for the ARM Climate Research Facility.

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Validation of Climate Model Ice Cloud Properties
Oct 31, 2014 [ Research Highlights ]       
General circulation models are used for understanding the past, present, and future climate. To be able to project future climate it is important that models provide a realistic depiction of the physical processes. Researchers at the National Center for Atmospheric Research (NCAR) have recently addressed how well properties of ice particles are represented in the [...]

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Fast and Rigorous: Finding Surface Reflectivity by Looking Up at Clouds
Oct 28, 2014 [ Research Highlights ]       
Capturing sunlight reflected off the Earth's surface and bounced off a cloud back to the Earth is an effective measure of surface reflectivity—or surface albedo, the measure of how mirror-like the Earth's surface is. Researchers at Pacific Northwest National Laboratory developed a new way to measure surface albedo by capturing that cloud-bounced sunlight. In collaboration [...]

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Dust Takes Detour on Ice-Cloud Journey
Oct 15, 2014 [ Research Highlights ]       
Wrapped in pollution, dust diverts from its usual course and steers clear of water. Researchers at Pacific Northwest National Laboratory found the result closes one more gap in understanding how and when cloud ice crystals form. They found that dust, usually a primary catalyst encouraging ice formation, when modified by pollution from combustion, becomes less [...]

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Interactions Between Cumulus Convection and Its Environment as Revealed by MC3E
Oct 13, 2014 [ Research Highlights ]       
After decades of effort, accurately representing cumulus convection is still one of the most challenging tasks for weather and climate modeling. This is primarily because the interaction between cumulus convection and its environment has not been fully understood. Previous budget diagnostic studies have often targeted tropical convective systems given the dominant role these convective systems [...]

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First Observations of Tracking Clouds Using Scanning ARM Cloud Radars
Oct 05, 2014 [ Research Highlights ]       
Scanning cloud radars provide new opportunities to map clouds and their evolution. Specifically, these radars observe cloud particles well in advance of large droplet formation, while also capturing the clouds at spatial and temporal scales sufficient for continuous tracking algorithms. To better demonstrate the capabilities of the new Scanning ARM Cloud Radars (SACR) at the [...]

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