News Center

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 1 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 [...]

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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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MICROARSCL Evaluation Data Released: Harnessing the Power of Radar Doppler Spectra
Jun 27, 2014 [ Data Announcements ]       
Since 2004, the ARM Climate Research Facility has collected continuous recordings of profiling radar Doppler spectra. These recorded spectra offer a powerful means for overcoming the dependency of radar measurements on particle size (proportional to the sixth power of particle diameter), thus enabling the identification of both small and large particle populations in a radar [...]

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Testing the Next Generation of Radiosondes
Jun 26, 2014 [ Blog, Field Notes, SGP ]       
Each year, the ARM Climate Research Facility launches thousands of weather balloons—radiosondes attached to helium balloons—to obtain critical measurements of temperature, pressure, humidity, and winds from the surface to well into the stratosphere. Recently, Vaisala, the company that designs and manufactures the radiosondes that ARM uses, released a new generation of radiosonde systems. These new [...]

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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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New Best Estimate Data Available for WACR-ARSCL
Jun 19, 2014 [ Data Announcements ]       
New data from the 95 GHz W-band ARM Cloud Radar-Active Remote Sensing of Clouds (WACR-ARSCL) value-added product (VAP) (Kollias and Miller, 2007) are now available in the ARM Data Archive. In addition to the WACR data, this VAP uses observations from the micropulse lidar and ceilometer to produce cloud boundaries and time-height profiles of cloud [...]

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University of Wyoming Seeking Assistant Professor
Jun 12, 2014 [ Employment Opportunities ]       
The Department of Atmospheric Science at the University of Wyoming invites applicants for a tenure-track faculty position, focused on modeling cloud or atmosphere-land interactions processes. This position will collaborate with the observational and modeling faculty and staff to improve the understanding and representation of physical processes in climate models in one of the target areas: [...]

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On the Amazon: A Very Cold Detour
Jun 11, 2014 [ ARM Mobile Facility 3, Blog, Field Notes, GOAMAZON ]       
I knew I had to return to the Amazon, I packed my Hawaiian shirt for a tropical locale. I was thinking about exotic diets, but turns out I was highly unprepared! As you can see in the picture, I reluctantly braved the hardships necessitated by the extreme environment when I arrived at Oliktok Point, Alaska, [...]

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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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First Phase of Research Flights Completed for GOAMAZON
Jun 02, 2014 [ Feature Stories and Releases ]       
Crisscrossing the sky above the Amazon Basin, a Gulfstream-1 aircraft operated by the ARM Aerial Facility completed 16 flights and logged 42 research hours between February and March 2014 for Phase 1 of airborne measurements for the Green Ocean Amazon, or GOAMAZON, field campaign.

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Accuracy of GFS and ECMWF Hurricane Sandy Track Forecasts Dependent on Cumulus Parameterization
May 19, 2014 [ Research Highlights ]       
Hurricane Sandy (2012) was an extremely damaging late-season storm that significantly impacted much of the northeastern United States. Aside from the damage to life and property, Hurricane Sandy was also noteworthy for its large forecast track differences very early in its life cycle. Roughly one week before landfall, the European Center for Medium-range Weather Forecasting [...]

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The Emergence of Open Source Software for the Weather Radar Community
May 15, 2014 [ Research Highlights ]       
Since the emergence of weather radar technology in the 1940s, research has sought to tap the full potential of weather radar observations. During the digital age, improvements in radar technology have been closely linked to advancements in computer science and software engineering. Making use of modern radars is not possible without software. Open Source Software [...]

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MBL Aerosol Properties and Their Impact on CCN at the Azores-AMF Site
May 09, 2014 [ Research Highlights ]       
A multi-platform data set from the Clouds, Aerosol, and Precipitation in the Marine Boundary Layer (CAP-MBL) Graciosa, Azores, 2009–2010 field campaign was used to investigate how continental aerosols influence MBL cloud condensation nuclei (CCN) number concentration (NCCN).

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Which Absorption Model Should Be Used for Supercooled Liquid Water in the Microwave?
May 03, 2014 [ Research Highlights ]       
Accurate liquid water path (LWP) measurements are critical for a large number of atmospheric research topics. The most commonly used method to derive LWP is to retrieve it from sky brightness temperature data observed by microwave radiometers (MWRs). However, this measurement approach requires an accurate radiative transfer model that has the strength of the liquid [...]

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Parameterization of Ice Fall Speeds in Midlatitude Cirrus: Results from SPartICus
May 03, 2014 [ Research Highlights ]       
While general circulation models (GCMs) represent the most complete description of all the interactions between the processes that define the primary cloud feedbacks on climate, this description is highly sensitive to the representation of clouds and their feedbacks. The ice fall velocity (Vi) has a strong impact on cloud radiative forcing and climate feedback due [...]

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