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Doppler Lidar Profile VAPs Now Available
Top: Height-time display of wind speed and direction.Bottom: Height-time displays of vertical velocity variance, skewness, and kurtosis. The ARM Facility currently operates several scanning coherent Doppler lidar systems at various sites around the globe. These instruments operate in the near infrared and provide measurements of radial velocity, attenuated aerosol backscatter, and signal-to-noise ratio. Previously shared…
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Large-Scale Forcing Data Collected During DYNAMO/AMIE Now Available for Evaluation
Surface precipitation measurements from TRMM 3B42 data set and the corresponding vertical velocity based on variational analysis of the northern sounding array data are shown here.Constrained variational analysis of forcing data taken from the northern sounding array are now available for the Dynamics of the Madden-Julian Oscillation (DYNAMO) and the ARM Madden-Julian Oscillation [MJO] Investigation…
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UPDATE: ARM Best Estimate Data Sets From MC3E Now in Production
On top, surface air relative humidity is shown in percent from ARMBE2DGRID on 2011-04-22 0:00:00 UTC and on bottom, surface pressure is shown in hPa from different SGP surface meteorological sites (color-coded) from ARMBESTNS for the MC3E period. EDITOR’S NOTE: The ARM Best Estimate Data Sets have been moved from evaluation to production at the…
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New MICROBASE Ensemble Data Set Available
Height-time plots for 30-minute ensemble means and standard deviations of liquid effective radius from the MICROBASEEN data set. A new data set of ensemble cloud retrievals from the March 2000 intensive observational period at the Southern Great Plains Central Facility is now available in the ARM Data Archive evaluation area. The new data set uses…
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Navigation Best Estimate Value-Added Product Released
The measured pitch of the ship is shown here for the twelfth return trip from Honolulu to Los Angeles, also known as MAGIC Leg 12B. Developed in response to the first ship-based deployment of the second ARM Mobile Facility (AMF2), the Navigation Best Estimate (NAVBE) Value-Added Product (VAP) has been released for evaluation. Meteorological, cloud,…
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AmeriFlux and Methane Evaluation VAP Now Available for Barrow Data
This image shows methane fluxes (nmol m-2 s-1) versus day of the year for early 2014.Greenhouse gases (GHGs) are suspected to be key drivers of global climate change. As Arctic permafrost melts, it unlocks stored carbon, which may contribute to large increases in the atmospheric mixing ratios of these gases. Understanding the rates and controlling…
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New and Improved Ceilometer Datastream Available
First cloud base height data are shown above at the various heights at which cloud base height is detected. Using quality control variables, missing data are shown in red for all of 2010.Recently, the datastream for the ceilometer instrument for all sites were reprocessed. This end-to-end reprocessing task corrected a couple of problems in the…
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New MICROARSCL Evaluation Data Released for Barrow, Alaska
Four of the roughly 30 variables provided by MICROARSCL are shown here for February 13, 2012, in Barrow, Alaska. A new evaluation release of 18 months of data from Barrow, Alaska, provides the first KAZR-based Micro-Active Remote Sensing of Clouds (MICROARSCL) data from this North Slope of Alaska (NSA) site. The addition of the KAZR…
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An Update of WACR-ARSCL: Evaluation VAP Data Available
A data plot example is shown here from Hyytiälä, Finland, for July 1, 2014. New data sets from the 95 GHz W-band ARM Cloud Radar-Active Remote Sensing of Clouds (WACR-ARSCL) are now available for download as an evaluation value-added product (VAP) for the ARM Mobile Facility (AMF) deployments in Hyytiälä, Finland, from February through September…
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Droplet Number Concentration Value-Added Product Now Operational
As aerosol concentration increases, droplet number concentration will increase and droplet size will decrease. Cloud droplet number concentration is an important factor in understanding aerosol-cloud interactions. As aerosol concentration increases, it is expected that droplet number concentration will increase and droplet size will decrease for a given liquid water path. This will greatly affect cloud…