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The new Convective Vertical Velocity (CONVV) value-added product uses observations from Doppler weather radars and other instruments to produce a best estimate of convective vertical velocity. This evaluation product is available for a few key cases during the Midlatitude Continental Convective Clouds Experiment field campaign at the ARM Southern Great Plains site.
Convective processes play [...]
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Eddy correlation flux measurement systems (ECOR) are used by ARM to provide surface turbulence flux measurements. The Quality Controlled Eddy Correlation Flux (QCECOR) value-added product (VAP) improves the ECOR data by applying the following quality control (QC) procedures:
Eddy correlation corrections
Determination of the quality-controlled energy fluxes from the corrected ECOR fluxes
Stringent QC checks.
The QCECOR evaluation product [...]
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Once a year, representatives from ARM’s External Data Center, Data Quality Office, Data Archive, and Data Management Facility gather with infrastructure management, scientists, and developers of data ingests and value-added products to discuss progress on infrastructure activities related to ARM data. In mid-August, the ARM Developers met at Pacific Northwest National Laboratory to review [...]
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The Ka-band ARM zenith radars (KAZRs) have replaced the long-serving millimeter-wavelength cloud radars (MMCRs). As a result, the Active Remote Sensing of Clouds (ARSCL) value-added product (VAP), which is based on MMCR observations, is being replaced by a KAZR version, the KAZR-ARSCL VAP.
KAZR observations in this VAP are corrected for water vapor attenuation and [...]
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Knowledge of a wide range of meteorological, chemical, and aerosol quantities and properties is needed to fully understand the key processes that affect aerosol life cycle. Field campaign and operational measurements of aerosol properties and trace gas chemistry are often available in a wide range of formats. As a result, scientists usually spend a [...]
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Planetary boundary layer (PBL) height (or mixing-layer depth) can vary significantly with time due to a number of factors, including large-scale dynamics, cloudiness, convective mixing, and the diurnal cycle of solar radiation. The structure and depth of the PBL are important to a wide range of atmospheric processes, such as cloud formation, aerosol mixing and [...]
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Evaluation data are available for the value-added product (VAP) Mapped Moments to a Cartesian Grid (MMCG) for periods between October and December 2011 from the Tropical Western Pacific Manus site. The C-band scanning ARM precipitation radar (C-SAPR) produces measurements of raw radar moments in antenna coordinates of range from and the azimuth and elevation of [...]
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The Interpolated Sonde (INTERPSONDE) value-added product (VAP) is an intermediate step of the MERGESONDE VAP that produces a daily file of atmospheric state variables (temperature, humidity, pressure, and winds) from radiosonde soundings, the microwave radiometer, and surface meteorological instruments. INTERPSONDE includes many of the same sophisticated scaling/interpolation/smoothing schemes that are the hallmark of MERGESONDE, [...]
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Aerosol optical depth (AOD) is a measure of the total aerosol burden in the atmosphere. The spectral dependence of AOD, typically described by the Angstrom exponent, is also an indicator of particle size. Small Angstrom exponent values (near zero) indicate presence of large particles, and vice versa.
The AOD value-added product (VAP) provides both the wavelength-dependent [...]
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The Merged Sounding evaluation product has moved into the ARM Data Archive as a value-added product (VAP). This Merged Sounding VAP, initially designed by Dr. Gerald Mace, was modified by software developer David Troyan under the scientific direction of Michael Jensen to better serve the ARM community. Data are available for the following sites:
Southern [...]
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The Aerosol Best Estimate (ABE) value-added product (VAP) provides best-estimate time series of total column aerosol optical depth (AOD) and the associated column Angstrom exponent, as well as time/height profiles of aerosol extinction, single-scattering albedo, asymmetry parameter, and Angstrom exponents above the Central Facility at the ARM Southern Great Plains (SGP) site.
As inputs, ABE uses [...]
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We still need your feedback! The ARM Data Archive stores more than 2000 types of datastreams and there are many ways to find and order the data. To help us understand how you interact with ARM data, please to take a few minutes and fill out the ARM Data User Satisfaction Survey.
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Scientists use detailed state-of-the art radiative transfer models to understand the radiative impact of clouds and aerosols on the Earth's radiation budget, evaluate remote sensing retrievals of cloud and aerosol properties, and develop and evaluate simpler radiative transfer models for inclusion in cloud and climate models. The ARM suite of instruments measures all of the [...]
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The Continuous Baseline Microphysical Retrieval (MICROBASE) value-added product (VAP) has been released as an official ARM VAP. Data from April 1998 through December 2009 are now available for the Southern Great Plains, North Slope of Alaska, and Tropical Western Pacific sites. Historical updates will be provided whenever additional data become available.
MICROBASE is a baseline [...]
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The first-ever 4-dimensional ARM data product, called Mapped Moments to a Cartesian Grid (MMCG), is now available for testing by the science community. Covering all major precipitation events during the Midlatitude Continental Convective Clouds Experiment, the MMCG is derived from scanning C-band ARM precipitation radar (C-SAPR) data. This value added product (VAP) was [...]
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Aerosol optical depth (AOD) measures total aerosol burden in the atmosphere. The spectral dependence of AOD, typically described by the Angstrom exponent, is also an indicator of particle size. Small Angstrom exponent values (near zero) indicate presence of large particles, and vice versa.
The newly developed AOD value-added product (VAP) provides both the wavelength-dependent values [...]
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