NCAR ACD FLEXPART Backtrajectories (C-130 Flights)
https://data.eol.ucar.edu/dataset/373.014

Summary
This dataset contains output of FLEXPART, a Lagrangian Particle Dispersion
Model (LPDM), including an updated version of the plots/ICARTT data. It
provides information on the history of air sampled along the C130 flight track
by releasing "particles" (infinitesimally small parcels of air) from the plane
location and following its path backwards in time. Advection, turbulence and
convection are the processes considered. A particle itself is "inert",
processes like deposition, emission or chemical conversion are not considered.
Thereby the result could be called "airmass history", as the particles behave
like air. Its location back in time and space since released is called
"backtrajectory". The chaotic nature of the atmosphere and uncertainties in
model estimates of wind vector, turbulence and convection requires a
statistical approach to estimate all probable backtrajectories. Hence not only
one, but a large number of particles (1e5 - 1e6) are released over a short
time period (1 hr) and followed back in time. While the exact trajectory for
each particle is used internally, the main model result is the number of
particles and the time they spent within a 3D lat/lon/altitude grid, called a
"sensitivity" or "residence time" field. This is calculated at discrete
intervals (every hour) in time since release. These fields are the raw output
of the model calculations. For ease of use, deterministic backtrajectories as
mass weighted mean of the plume at each hour, and 5 plume cluster centroids
(Stohl et al., Atm. Env., 2002) are calculated as well. NOTE: Narrowing your
order by date will allow you to select from a smaller group of files. Please
make sure to properly acknowledge this dataset in publications or
presentations, or consider offering co-authorship if you deem it to be a
substantial contribution to your work.

Identifiers
 * Local archive identifier: 373.014
 * doi:10.26023/KAGQ-0SPE-1Z0G
   https://doi.org/10.26023/KAGQ-0SPE-1Z0G

Versions
  1.0

Citation
 Knote, C. 2013. SAS: NCAR ACD FLEXPART Backtrajectories. Version 1.0.
 UCAR/NCAR - Earth Observing Laboratory.
 https://doi.org/10.26023/KAGQ-0SPE-1Z0G Accessed 20 Apr 2024.

Additional citation styles can be generated by entering the DOI
at CrossCite (https://citation.crosscite.org/).

Acknowledgement
In addition to the citation reference and any other acknowledgements,
please acknowledge NCAR/EOL in your publications with text such as:

  Data provided by NCAR/EOL under the sponsorship of
  the National Science Foundation.
  https://data.eol.ucar.edu/

Related projects
 * SAS: The Southeast Atmosphere Study
   https://data.eol.ucar.edu/project/SAS

Additional information
 * Frequency: criteria
 * Language: English

Categories
 * Models/Analyses

Platforms
 * FLEXible PARTicle dispersion model - FLEXPART
 * NSF/NCAR C-130

Instruments
 * Computer

Documentation
 * C-130_NCAR_ACD_FLEXPART_Backtrajectories_Readme.txt [11 KiB]
   https://data.eol.ucar.edu/file/download/48CD3178882A/C-130_NCAR_ACD_FLEXPART_Backtrajectories_Readme.txt

Related links
 * companion: 373.008: NCAR ACD FLEXPART Backtrajectories (Ground Sites)
   https://data.eol.ucar.edu/dataset/373.008
 * homepage: NOMADSS Home Page
   https://www.eol.ucar.edu/field_projects/nomadss
 * homepage: SAS Home Page
   https://www.eol.ucar.edu/field_projects/sas
 * info: SOAS Project Page
   https://www.eol.ucar.edu/field_projects/soas
 * info: SAS Field Catalog Missions
   http://catalog.eol.ucar.edu/sas/tools/missions
 * info: SAS Data Policy
   https://www.eol.ucar.edu/content/sas-data-policy

Temporal coverage
 * Begin datetime: 2013-06-03 00:00:00 
 * End datetime: 2013-07-14 23:59:59 

Spatial coverage
 * Maximum (North) Latitude: 45.00
 * Minimum (South) Latitude: 24.00
 * Minimum (West) Longitude: -105.00
 * Maximum (East) Longitude: -72.00

Primary contact information
 * pointOfContact: EOL Data Support <datahelp@eol.ucar.edu>
   https://data.eol.ucar.edu/contact/show/1

Additional contact information
 * author: Christoph Knote <knote@ucar.edu>
   https://data.eol.ucar.edu/contact/show/1178

Alternate metadata formats
 * DataCite: https://data.eol.ucar.edu/dataset/373.014?format=datacite
 * ISO/TC 211: https://data.eol.ucar.edu/dataset/373.014?format=isotc211