IsoMet Tools: Difference between revisions

From gfi
(Created page with "flextract reference AUTHORS Alexander Läderach, Harald Sodemann PURPOSE: Extract trajectories from FLEXPART particle binary format and convert them to LAGRANTO-format. A...")
 
No edit summary
Line 1: Line 1:
flextract reference


AUTHORS
== flextract reference ==
 
 
'''AUTHORS:'''


Alexander Läderach, Harald Sodemann
Alexander Läderach, Harald Sodemann


PURPOSE:
'''PURPOSE:'''


Extract trajectories from FLEXPART particle binary format and convert them to LAGRANTO-format.
Extract trajectories from FLEXPART particle binary format and convert them to LAGRANTO-format.


AVAILABLE DATA:
'''AVAILABLE DATA:'''


5 mio. global FLEXPART-trajectories covering 1979-01-02 00:00 to 2013-12-31 15:00 UTC. Stored at /tempest/sdisk/alexander/flexpart/global_corr/(input-path).
5 mio. global FLEXPART-trajectories covering 1979-01-02 00:00 to 2019-08-30 15:00 UTC.  
Stored at <code>Data/gfi/met/flexpart/erainterim/global/global_corr/</code> (input-path).


GET STARTED:
'''GET STARTED:'''


Create a settings-file with the following structure (smaller, bold font):
Create a settings-file with the following structure:


<pre>
<pre>
# --------------------------------------------------------- #
# --------------------------------------------------------- #
# Settings to extract FLEXPART trajectories from database # # NOTE: All lines beginning with # and empty ones ignored # # --------------------------------------------------------- #
# Settings to extract FLEXPART trajectories from database #  
# Path to the FLEXPART trajectory files (Input) /tempest/sdisk/alexander/flexpart/global_corr/
# NOTE: All lines beginning with # and empty ones ignored #  
# Path to store trajectories in LAGRANTO-format (Output) /home/alaedera/progs/flextract/
# --------------------------------------------------------- #
# Begin time (Year Month Day Hour Min Sec) 2000 1 1 0 0 0
# Path to the FLEXPART trajectory files (Input)  
# End time (Year Month Day Hour Min Sec) 2000 1 2 0 0 0
/Data/gfi/met/flexpart/erainterim/global/global_corr/
# Timestep (hours) 3
 
# Trajectory length (hours) 24
# Path to store trajectories in LAGRANTO-format (Output)  
# Only consider each nth-particle only (1=each of the 5mio. particles) # NOTE: could lead to huge output if too small
/Data/gfi/work/<USERNAME>/
 
# Begin time (Year Month Day Hour Min Sec)  
# NOTE First date for which trajectories are calculated
2000 1 1 0 0 0
 
# End time (Year Month Day Hour Min Sec)  
# NOTE Last date for which trajectories are calculated
2000 1 2 0 0 0
 
# Timestep (hours)  
# NOTE always positive
6
 
# Trajectory length (hours)  
# NOTE positive for forward trajectories, negative for backward
24
 
# Only consider each nth-particle only (1=each of the 5mio. particles)  
# NOTE: could lead to huge output if too small
10
10
# Target area (minlon maxlon minlat maxlat) 5 17 43 49
 
# Target area (minlon maxlon minlat maxlat)  
5 17 43 49
</pre>
</pre>


USAGE:
'''USAGE:'''


./flextract <settings-file>
./flextract <settings-file>


NOTE:
'''NOTE:'''


The minimal timestep for the trajectories to be extracted is 3 hours. The timesteps 00 06 12 18 are given by the ERA-interim reanalysis and the 03 09 15 21 timesteps are given by the forecasts of the model used to produce ERA-interim.
The minimal timestep for the trajectories to be extracted is 3 hours. The timesteps 00 06 12 18 are given by the ERA-interim reanalysis and the 03 09 15 21 timesteps are given by the forecasts of the model used to produce ERA-interim.

Revision as of 21:55, 20 April 2020

flextract reference

AUTHORS:

Alexander Läderach, Harald Sodemann

PURPOSE:

Extract trajectories from FLEXPART particle binary format and convert them to LAGRANTO-format.

AVAILABLE DATA:

5 mio. global FLEXPART-trajectories covering 1979-01-02 00:00 to 2019-08-30 15:00 UTC. Stored at Data/gfi/met/flexpart/erainterim/global/global_corr/ (input-path).

GET STARTED:

Create a settings-file with the following structure:

# --------------------------------------------------------- #
# Settings to extract FLEXPART trajectories from database # 
# NOTE: All lines beginning with # and empty ones ignored # 
# --------------------------------------------------------- #
# Path to the FLEXPART trajectory files (Input) 
/Data/gfi/met/flexpart/erainterim/global/global_corr/

# Path to store trajectories in LAGRANTO-format (Output) 
/Data/gfi/work/<USERNAME>/

# Begin time (Year Month Day Hour Min Sec) 
# NOTE First date for which trajectories are calculated
2000 1 1 0 0 0

# End time (Year Month Day Hour Min Sec) 
# NOTE Last date for which trajectories are calculated
2000 1 2 0 0 0

# Timestep (hours) 
# NOTE always positive
6

# Trajectory length (hours) 
# NOTE positive for forward trajectories, negative for backward
24

# Only consider each nth-particle only (1=each of the 5mio. particles) 
# NOTE: could lead to huge output if too small
10

# Target area (minlon maxlon minlat maxlat) 
5 17 43 49

USAGE:

./flextract <settings-file>

NOTE:

The minimal timestep for the trajectories to be extracted is 3 hours. The timesteps 00 06 12 18 are given by the ERA-interim reanalysis and the 03 09 15 21 timesteps are given by the forecasts of the model used to produce ERA-interim.