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+ Text Format

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FIELD CAMPAIGN -
Distributed Regional Aerosol Gridded Observation Networks (DRAGON)-Germany 2013

 
 
Data (Top)
 

Aerosol Optical Depth Products (including water vapor and fine/coarse mode AOD)

+ AOD Data Browser

+ AOD Data Download Tool

Almcuantar Inversion Aerosol Properties (including size distributions, complex index of refraction, single scattering albedo, etc.)

+ Inversion Data Browser

+ Inversion Data Download Tool

Combined Data Download Table (April 1, 2013 to August 1, 2013)

Data
Data Format
Level 1.0 Aerosol Optical Depth (AOD)

+ All Points
+ Daily Averages
+ Monthly Averages

Level 1.5 Aerosol Optical Depth (AOD)
Level 2.0 Aerosol Optical Depth (AOD)
Level 1.0 Spectral Deconvolution Algorithm (SDA) Retrievals
Level 1.5 Spectral Deconvolution Algorithm (SDA) Retrievals
Level 2.0 Spectral Deconvolution Algorithm (SDA) Retrievals
Level 1.5 Almucantar Inversion Products
(except Phase Functions)
Level 1.5 Almucantar Inversion Products Phase Functions
Level 2.0 Almucantar Inversion Products
(except Phase Functions)
Level 2.0 Almucantar Inversion Phase Functions
 
Background
 

Aerosol measurement observations from ground-based sun photometers and sun/sky radiometers have played a critical role in developing, reformulating and validating satellite algorithms to characterize aerosol optical depth, modal aerosol retrievals and single scattering albedo among other parameters.   New and improved algorithms are being developed for current and future satellite missions that will place a greater demand on the accuracy and fidelity of the ground-based measurements for validation, multi data set synergism and long-term climate research.  Heretofore satellite validation studies using sun and sky scanning spectral radiometer measurements such as AERONET have relied on point observations extrapolated to a two dimensional domain to compare to the satellite retrieval.  Additionally few of the ground-based remote sensing measurements have had a rigorous comparison or validation against other ground-based measurements particularly in situ observations of aerosol size and absorption.  DRAGON campaigns will provide a data set to address satellite validation and in situ comparisons.

+ DRAGON White Paper

 
Experimental Objectives (Top)
 
  • Establish a mesoscale gridded network of sun photometers that encompasses, urban, agricultural, and maritime landscapes over the Houston metropolitan region of Texas
  • Optimize the grid to validate/collaborate inversion products in conjunction with aircraft flights performing in situ measurements
  • Optimize the gridded network to validate satellite retrievals from 50 m to 10 Km pixel resolution
  • Supplement the gridded network with non gridded sites to capture aerosol variability
  • Develop a geo-referenced database that will accommodate supplementary/complimentary data sets
 
Measurement Plan (Top)
 

The HD(CP)2 project will explore how different representations of atmospheric processes at their relevant (and usually small) spatial and temporal scales contribute to the overall skill in modeling clouds and precipitation. The observational component HOPE (HD(CP)2 Observational Prototype Experiment) was conducted in spring 2013 to provide input and evaluation data to high resolution (cloud) modeling. Measurements were done at such high resolution that even sub-grid variability in large eddy simulations (LES) can be addressed. By concentrating ground remote sensing instruments with coordinated scanning procedures within a small 10x10km area, HOPE measurements were intended to capture the properties of lower altitude clouds and their environment, especially during the developing stages of clouds and during the onset of precipitation.

The HOPE experiment was conducted from April to June 2013 near Jülich, about 50 km west of Cologne, Germany. Within the 10x10km center area during the experiment, in addition to one permanent site (JOYCE), two temporary sites (HOPE_Krauthausen, HOPE_Hambach) were established. All three sites were equipped with scanning lidar, radar and microwave instruments. In support of the HOPE campaign, the, AERONET group (at NASA-GSFC) provided four Cimel sun-/sky-photometer instruments. Two of the instruments were placed at the two temporary sites (HOPE_Krauthausen, HOPE_Hambach) as an AERONET Cimel is already established at the third (JOYCE) site. This assured RAMAN lidar systems at all three sites were complemented by CIMEL-sun-/sky-photometer sampling. The other two CIMEL instruments were deployed ca. 30km WSW upwind (RTHW_Aachen) and ca. 30km downwind ENE (HOPE_Inselhombroich) of the central facilities, to capture the larger scale (aerosol) variability.

Figure 1 DRAGON-USA 2012 Site Distribution

Figure 1. DRAGON-Germany 2013 Site Distribution Download KMZ file.

DRAGON Text Lists

+ Level 1.0 AOD Data (TXT)
+ Level 1.5 AOD Data
(TXT)
+ Level 2.0 AOD Data (TXT)

DRAGON Google Earth Distribution

+ Level 1.0 AOD Data (Google Earth KMZ)
+ Level 1.5 AOD Data
(Google Earth KMZ)
+ Level 2.0 AOD Data (Google Earth KMZ)

 

 
Contacts (Top)
Collaborators
Title/Project Organization
Brent Holben
AERONET PI
NASA GSFC
Andreas Macke
HOPE PI
Leibniz Institute for Tropospheric Research
Susanne Crewell
HOPE
Institute for Geophysics and Meteorology
Birger Bohn
AERONET/FZJ-JOYCE
Institute for Energy - Klimaforschung
     
Joel Schafer
AERONET
NASA GSFC
Tom Eck
AERONET
NASA GSFC
Mikhail Sorokin
AERONET
NASA GSFC
David Giles
AERONET
NASA GSFC
Ilya Slutsker
AERONET
NASA GSFC
Peter Kenny
AERONET
NASA GSFC
Alexander Smirnov
AERONET
NASA GSFC
Jon Rodriguez
AERONET
NASA GSFC
Aliaksandr Siniuk
AERONET
NASA GSFC
Amy Scully
AERONET
NASA GSFC

 

 

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Last Updated: March 28, 2017