News Center

LANL Seeking Radar Engineer for ARM Facility
Aug 27, 2014 [ Employment Opportunities ]       
Los Alamos National Laboratory (LANL) is currently seeking a radar engineer (Engineering Technologist 2) for the Atmospheric Radiation Measurement (ARM) Climate Research Facility. ARM sites include a broad array of instrumentation, including radars, lidars, radiometers, and meteorological sensors. The radar engineer will play an integral role developing a Field Instrument Deployments and Operations (FIDO) Radar Operations [...]

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Heartfelt Goodbye to Manus Island
Aug 27, 2014 [ Facility News ]       
After 18 years, the U.S. Department of Energy’s ARM observation site at Manus Island is closed, but the data results will live on and remain available for use in the ARM Data Archive.

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Predicting Atmospheric Particle Population's Weight Gain
Aug 22, 2014 [ Research Highlights ]       
Like people, particles in the atmosphere can gain weight, and it is not easy to predict how much and how quickly they do. The culprit is newly formed carbon-containing compounds in the atmosphere, also referred to as secondary organic aerosols (SOAs), which pile on pre-existing particles, resulting in a gain in mass. It is even [...]

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Checking Up on Tropical Sunlight
Aug 22, 2014 [ Research Highlights ]       
Science is not settled on a bet or a hunch. Measurements and data support conclusions and provide clarity. Scientists at Pacific Northwest National Laboratory (PNNL) found that about 10 percent of the time two ground-based stations on a tropical island, though less than five miles apart, collect different incoming sunlight measurements based on which way [...]

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Radar Engineer for ARM Facility at PNNL
Aug 19, 2014 [ Employment Opportunities ]       
Pacific Northwest National Laboratory is currently seeking a radar engineer for the Atmospheric Radiation Measurement (ARM) Climate Research Facility. ARM sites include a broad array of instrumentation, including radars, lidars, radiometers, and meteorological sensors. The radar engineer will be responsible for performing analysis of radar data to assess the operational status of radars in the [...]

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Parameterization of Vertical Velocity in Shallow Convections
Aug 17, 2014 [ Research Highlights ]       
The parameterization of air vertical velocity within cumulus clouds in large-scale models has been a subject of active research. The mean vertical velocity in convective clouds is desired for several reasons. For example, it is needed to determine the cloud-top height. Traditionally, the neutral buoyancy level (NBL) is defined as the cloud top in most [...]

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Phase State and Physical Properties of Ambient and Lab Generated Aerosols: X-ray Microscopy
Aug 14, 2014 [ Research Highlights ]       
Models of secondary organic aerosol (SOA) formation assume that the organic fraction is a liquid with condensed phase-diffusion rates fast enough to maintain equilibrium with the gas phase. However, numerous recent studies looking at particle bounce behavior, evaporation, thermal desorption, diffusion, physical manipulation, etc., have all shown that organic matter in aerosols can have higher [...]

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Location Matters: Origin of Ice Formation Influences Mixed-phase Stratiform Clouds
Aug 13, 2014 [ Research Highlights ]       
Mixed-phase stratiform clouds are common features in the Arctic and midlatitude atmosphere. These thin clouds contain a mix of ice crystals and "supercooled" water droplets that, despite the freezing temperatures, remain in liquid form. Scientists aren't sure why these clouds can persist for long periods of time, even while steadily losing ice particles through precipitation. [...]

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Research Masters the Misunderstood Mixed-Phase Cloud
Aug 12, 2014 [ Research Highlights ]       
They are ice, they are rain—and sometimes in-between. Mixed-phase clouds, ubiquitous in the Arctic, are an enigma for scientists trying to understand their role in affecting the climate. In a study led by Dr. Mikhail Ovchinnikov at Pacific Northwest National Laboratory, scientists found that unrealistic assumptions in previous modeling studies have misled predictions about key [...]

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First MAGIC Workshop Discusses Future of Marine Clouds
Aug 12, 2014 [ Facility News ]       
Following the wrap up of the Marine ARM GPCI Investigation of Clouds (MAGIC) field campaign, a workshop was held to provide an overview of existing and planned data analysis from the campaign. In May, the First MAGIC Science Workshop, held at Brookhaven National Laboratory, was attended by 40 scientific experts. Their objectives were to discuss [...]

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Fiscal Year 2015 ASR Funding Opportunity Announced
Aug 11, 2014 [ Facility News ]       
The U.S. Department of Energy’s Office of Science is now accepting applications for Office of Biological and Environmental Research (BER) grants for under-represented research within the Atmospheric System Research (ASR) program. Priority will be given to observational, data analysis, and/or modeling studies that use data from the Atmospheric Radiation Measurement Climate Research Facility (ARM), ASR, [...]

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First MAGIC Science Workshop a Wrap
Aug 06, 2014 [ Blog, MAGIC ]       
It’s hard to believe it's been over a year since I was on the Spirit launching weather balloons, but it has. It has also been some time since the last MAGIC update, so I'll try to catch everyone up on developments and current activities. In May I organized the First MAGIC Science Workshop, which was held [...]

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Seeking Lead Mentor for the ARM Soil Water and Temperature System (SWATS)
Aug 05, 2014 [ Employment Opportunities ]       
The ARM Climate Research Facility is seeking an ARM Instrument Lead Mentor for the Soil Water and Temperature Systems (SWATS), which provides hourly soil temperature, soil-water potential and volumetric water content measurements at the Southern Great Plains site. The descriptions of the technique and variables measured are given in the SWATS Instrument Handbook. The ARM [...]

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Scientists Uncover Combustion Mechanism to Better Predict Warming by Wildfires
Aug 04, 2014 [ Research Highlights ]       
Atmospheric particulate matter (PM) plays an important role in the Earth’s radiative balance by interacting directly with solar radiation, or indirectly by acting as cloud condensation or ice nuclei. PM can exhibit negative climate forcing by enhancing scattering of solar radiation. However, over the past two decades, it has been established that a portion of [...]

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Lecturer/Associate Professor in Clouds available at the University of Reading
Aug 03, 2014 [ Employment Opportunities ]       
The University of Reading is seeking a scientist to provide research and develop leadership in the science areas associated with clouds. This position will work within the Department of Meteorology to enhance existing activity in remote sensing of clouds, cloud physics, earth observations, and radar. This position will contribute to the University of Reading’s teaching [...]

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2015 Funding Opportunity Available for Early Career Scientists
Jul 31, 2014 [ Facility News ]       
The U.S. Department of Energy’s Office of Science is now accepting research applications through its Early Career Research Program. For the 2014 call, the DOE Climate and Environmental Sciences Division is only accepting proposals in the area of land-atmosphere interactions. Applications are sought that will reduce the uncertainties in projections from Earth system models through [...]

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The Anatomy and Physics of ZDR Columns
Jul 27, 2014 [ Research Highlights ]       
Observations of deep convective storms using dual-polarization radars frequently reveal columnar regions of enhanced differential reflectivity (ZDR). These so-called "ZDR columns" often extend from low levels to several kilometers above the environmental 0 °C level and represent the lofting of supercooled liquid water by the storm's updraft. Despite several decades of remote sensing observations of [...]

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Aerosol-mediated Changes in Deep Convective Cloud Radiative Forcing over the SGP
Jul 24, 2014 [ Research Highlights ]       
Studies have shown that aerosols can fuel cloud vertical development and lift cloud-top heights. Cloud anvils can also expand under the influence of aerosols. Such aerosol-mediated changes in cloud parameters can alter the cloud radiative forcing (CRF), which is often referred to as aerosol indirect forcing or the aerosol indirect effect. Among the aerosol-induced changes [...]

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Gas-Phase Dry Deposition as a Major Removal Mechanism for Secondary Organic Aerosols (SOA)
Jul 23, 2014 [ Research Highlights ]       
Removal of secondary organic aerosols (SOA) from the atmosphere has been studied far less that its equal, production. In current regional and global chemistry models, rainout of SOA particles are their dominant loss. Here, we show the importance of a less direct pathway, in which large-scale evaporation of SOA particles occurs as a re-adjustment to [...]

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Microwave Radiometer Retrieval Data Available for AMF Sites
Jul 22, 2014 [ Data Announcements ]       
The Microwave Radiometer Retrievals (MWRRET) value-added product (VAP) has now been processed for the following ARM Mobile Facility (AMF) deployments: Black Forest, Germany Shouxian, China Niamey, Niger, West Africa Graciosa Island, Azores. Preliminary data are also available for the MAGIC deployment of the AMF in the evaluation area of the ARM Data Archive. The MAGIC data do not currently include [...]

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Call for Abstracts for AGU Fall Meeting and AMS Annual Meeting
Jul 22, 2014 [ Events ]       
Abstract submission deadlines are 6 August for the Fall Meeting of the American Geophysical Union (AGU) and 15 August for the Annual Meeting of the American Meteorological Society (AMS). AGU Sessions The 2014 AGU Fall Meeting will be held 15-19 December in San Francisco, California. Over 24,000 geophysicists from around the world are expected to attend and present [...]

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Ice Concentration Retrieval in Stratiform Mixed-Phase Clouds Using Cloud Radar Measurements
Jul 21, 2014 [ Research Highlights ]       
The production of ice particles in clouds has significant impacts on their precipitation efficiency, lifetime, and radiative properties. Recent observations reveal that mixed-phase clouds, which contain both liquid droplets and ice particles, have a large global coverage and are the dominant cloud type over polar regions. The ice number concentrations (Ni) in these clouds are [...]

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Postdoctoral Position Available at Lund University
Jul 11, 2014 [ Employment Opportunities ]       
The Department of Physical Geography and Ecosystem Science, Lund University, invites applications for a postdoctoral position. The university in Lund, Sweden, is seeking a postdoctoral associate for the atmospheric modeling group who will work in the development and application of numerical models for simulation of clouds and cloud systems. Working in a teaming environment, the [...]

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AGU Journal Seeks Editor in Chief
Jul 11, 2014 [ Employment Opportunities, Facility News ]       
The American Geophysical Union (AGU) is seeking a dynamic, well-organized scientist with high editorial standards to serve a 4-year term as the editor-in-chief for the Journal of Advances in Modeling Earth Systems (JAMES). The editor-in-chief will be the principal architect of the scientific content for the journal and an active scientist, well known and well [...]

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ARM’s Educational Outreach Recognized
Jul 10, 2014 [ Education, Facility News ]       
ARM’s lesson plan, "Thermal Expansion of Water" has been selected for inclusion in the Climate Literacy and Energy Awareness Network’s (CLEAN) collection of educational resources. The CLEAN efforts are funded through research grants from the National Oceanic and Atmospheric Administration (NOAA), National Science Foundation (NSF), and Department of Energy (DOE). Receipt of the prestigious CLEAN [...]

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Sally McFarlane Named DOE ARM Program Manager
Jul 09, 2014 [ Facility News, Feature Stories and Releases ]       
On July 1, Dr. Sally McFarlane took a new role in the U.S. Department of Energy as the program manager for the Atmospheric Radiation Measurement (ARM) Climate Research Facility.

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Studying the Sky—Day and Night
Jul 08, 2014 [ Facility News ]       
Clouds play a critical role in our climate system by reflecting light and heat into space and distributing precipitation. At the ARM Southern Great Plains site, a variety of instruments measure different aspects of clouds, such as cloud fraction, or the amount of cloud coverage an area gets at any certain time. In May, a new [...]

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Research Associate Needed in ARM Data Quality Office
Jul 07, 2014 [ Employment Opportunities ]       
The Cooperative Institute for Mesoscale Meteorological Studies at the University of Oklahoma is seeking a research associate with strong attention to detail and good computer skills to join the U.S. Department of Energy’s (DOE) Atmospheric Radiation Measurement (ARM) Climate Research Facility Data Quality (DQ) Office. The DQ Office supports the needs of the DOE’s Atmospheric [...]

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A Richly Deserved Retirement; a Job Well Done
Jul 01, 2014 [ Facility News, Feature Stories and Releases ]       
June 30, 2014, marks another key milestone in the progress and evolution of the ARM Climate Research Facility. After 20 years of leadership, Wanda Ferrell, DOE Program Director for the ARM Facility, is retiring.

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Precipitation Estimation from the ARM Distributed Radar Network
Jun 20, 2014 [ Research Highlights ]       
Recently, the US Department of Energy's (DOE) Atmospheric Radiation Measurement (ARM) Climate Research Facility outfitted its fixed and mobile sites with scanning dual-polarized X/C-band weather radars. These systems are designed for improved observation of cloud and precipitation evolution, dynamic and microphysical processes and longer-term precipitation trends. An initial priority has been the development of a [...]

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Comparison of Mixed-layer Heights from Airborne HSRL and WRF-Chem During CARES
Jun 05, 2014 [ Research Highlights ]       
The NASA Langley Research Center (LaRC) airborne High Spectral Resolution Lidar (HSRL) was deployed to California on board the NASA LaRC B-200 aircraft to aid in characterizing aerosol properties during the California Research at the Nexus of Air Quality and Climate Change (CalNex) and Carbonaceous Aerosol and Radiative Effects Study (CARES) field campaigns in May [...]

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