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.TH Lagrantohelp
.SH NAME 
.B Lagranto - 
calculate trajectories for ECMWF analyses and forecasts
.SH SYNOPSIS
.B lagrantohelp [topic|tutorial|reference|future] - 
show this man page or the one corresponding to a specific topic. All 
.I
underlined
names in this document have their own man page. If "tutorial" is chosen,
a detailed tutorial for Lagranto is opened. For "reference" a PDF document with all man pages is opened. Finally, with option "future" plans for additional features will be listed.
.SH DESCRIPTION 
Lagranto is a software tool (UNIX shell-scripts and Fortran programs) to analyze
Lagrangian aspects of atmospheric phenomena. It requires a time-series of
3-dimensional wind fields (and if necessary further variables) on netCDF files.
.SH CORE PROGRAMS
.TP 15
.I create_startf
create starting files
.TP 15
.I caltra
calculate trajectory positions
.TP 15
.I trace
trace meteorological fields along trajectories
.TP 15
.I select
select trajectories based on several criteria 
.TP 15
.I density
create netCDF files with trajectory densities
.SH TRAJECTORY TOOLS
.TP 15
.I extract
extract single trajectories, times or columns from a trajectory file
.TP 15
.I list2lsl
transform a (longitude,latitude,pressure) list into a trajectory file
.TP 15
.I lsl2list
transform a trajectory file into a (longitude,latitude,pressure) list 
.TP 15
.I mergetra
merge two trajectory files
.TP 15
.I reformat
change the format of a trajectory file
.TP 15
.I timeres
change the time resolution of a trajectory file with interpolation
.TP 15
.I trainfo
write some information about a trajectory file
.TP 15
.I difference
calculate the difference between two trajectory files
.SH NETCDF TOOLS
.TP 15
.I changecst 
change the constants filename on a netCDF file
.TP 15
.I changet
change the time on a netCDF file
.TP 15
.I getmima
get the minimum and maximum value of a field on a netCDF file
.TP 15
.I getvars 
get a list of fields on a netCDF file
.SH GENERAL TOOLS
.TP 15
.I newtime
get a new date from an initial date and an offset in hours
.TP 15
.I gettidiff
get the time difference between two dates
.SH VISUALISATION
Lagranto comes with two packages for visualisation of trajectories: one based on Matlab (www.mathworks.com) and one based on NCL (www.ncl.ucar.edu). Examples are provided in folder "figure" of the Lagranto installation.  
.SH AUTHOR
Written by Michael Sprenger and Heini Wernli (January 2011)

Rev 3	Rev 14
1	`.TH Lagrantohelp`	1	`.TH Lagrantohelp`
2	`.SH NAME`	2	`.SH NAME`
3	`.B Lagranto -`	3	`.B Lagranto -`
4	`calculate trajectories for ECMWF analyses and forecasts`	4	`calculate trajectories for ECMWF analyses and forecasts`
5	`.SH SYNOPSIS`	5	`.SH SYNOPSIS`
6	`.B lagrantohelp [topic\|tutorial\|reference\|future] -`	6	`.B lagrantohelp [topic\|tutorial\|reference\|future] -`
7	`show this man page or the one corresponding to a specific topic. All`	7	`show this man page or the one corresponding to a specific topic. All`
8	`.I`	8	`.I`
9	`underlined`	9	`underlined`
10	`names in this document have their own man page. If "tutorial" is chosen,`	10	`names in this document have their own man page. If "tutorial" is chosen,`
11	`a detailed tutorial for Lagranto is opened. For "reference" a PDF document with all man pages is opened. Finally, with option "future" plans for additional features will be listed.`	11	`a detailed tutorial for Lagranto is opened. For "reference" a PDF document with all man pages is opened. Finally, with option "future" plans for additional features will be listed.`
12	`.SH DESCRIPTION`	12	`.SH DESCRIPTION`
13	`Lagranto is a software tool (UNIX shell-scripts and Fortran programs) to analyze`	13	`Lagranto is a software tool (UNIX shell-scripts and Fortran programs) to analyze`
14	`Lagrangian aspects of atmospheric phenomena. It requires a time-series of`	14	`Lagrangian aspects of atmospheric phenomena. It requires a time-series of`
15	`3-dimensional wind fields (and if necessary further variables) on netCDF files.`	15	`3-dimensional wind fields (and if necessary further variables) on netCDF files.`
16	`.SH CORE PROGRAMS`	16	`.SH CORE PROGRAMS`
17	`.TP 15`	17	`.TP 15`
18	`.I create_startf`	18	`.I create_startf`
19	`create starting files`	19	`create starting files`
20	`.TP 15`	20	`.TP 15`
21	`.I caltra`	21	`.I caltra`
22	`calculate trajectory positions`	22	`calculate trajectory positions`
23	`.TP 15`	23	`.TP 15`
24	`.I trace`	24	`.I trace`
25	`trace meteorological fields along trajectories`	25	`trace meteorological fields along trajectories`
26	`.TP 15`	26	`.TP 15`
27	`.I select`	27	`.I select`
28	`select trajectories based on several criteria`	28	`select trajectories based on several criteria`
29	`.TP 15`	29	`.TP 15`
30	`.I density`	30	`.I density`
31	`create netCDF files with trajectory densities`	31	`create netCDF files with trajectory densities`
32	`.SH TRAJECTORY TOOLS`	32	`.SH TRAJECTORY TOOLS`
33	`.TP 15`	33	`.TP 15`
34	`.I extract`	34	`.I extract`
35	`extract single trajectories, times or columns from a trajectory file`	35	`extract single trajectories, times or columns from a trajectory file`
36	`.TP 15`	36	`.TP 15`
37	`.I list2lsl`	37	`.I list2lsl`
38	`transform a (longitude,latitude,pressure) list into a trajectory file`	38	`transform a (longitude,latitude,pressure) list into a trajectory file`
39	`.TP 15`	39	`.TP 15`
40	`.I lsl2list`	40	`.I lsl2list`
41	`transform a trajectory file into a (longitude,latitude,pressure) list`	41	`transform a trajectory file into a (longitude,latitude,pressure) list`
42	`.TP 15`	42	`.TP 15`
43	`.I mergetra`	43	`.I mergetra`
44	`merge two trajectory files`	44	`merge two trajectory files`
45	`.TP 15`	45	`.TP 15`
46	`.I reformat`	46	`.I reformat`
47	`change the format of a trajectory file`	47	`change the format of a trajectory file`
48	`.TP 15`	48	`.TP 15`
49	`.I timeres`	49	`.I timeres`
50	`change the time resolution of a trajectory file with interpolation`	50	`change the time resolution of a trajectory file with interpolation`
51	`.TP 15`	51	`.TP 15`
52	`.I trainfo`	52	`.I trainfo`
53	`write some information about a trajectory file`	53	`write some information about a trajectory file`
54	`.TP 15`	54	`.TP 15`
55	`.I difference`	55	`.I difference`
56	`calculate the difference between two trajectory files`	56	`calculate the difference between two trajectory files`
57	`.SH NETCDF TOOLS`	57	`.SH NETCDF TOOLS`
58	`.TP 15`	58	`.TP 15`
59	`.I changecst`	59	`.I changecst`
60	`change the constants filename on a netCDF file`	60	`change the constants filename on a netCDF file`
61	`.TP 15`	61	`.TP 15`
62	`.I changet`	62	`.I changet`
63	`change the time on a netCDF file`	63	`change the time on a netCDF file`
64	`.TP 15`	64	`.TP 15`
65	`.I getmima`	65	`.I getmima`
66	`get the minimum and maximum value of a field on a netCDF file`	66	`get the minimum and maximum value of a field on a netCDF file`
67	`.TP 15`	67	`.TP 15`
68	`.I getvars`	68	`.I getvars`
69	`get a list of fields on a netCDF file`	69	`get a list of fields on a netCDF file`
70	`.SH GENERAL TOOLS`	70	`.SH GENERAL TOOLS`
71	`.TP 15`	71	`.TP 15`
72	`.I newtime`	72	`.I newtime`
73	`get a new date from an initial date and an offset in hours`	73	`get a new date from an initial date and an offset in hours`
74	`.TP 15`	74	`.TP 15`
75	`.I gettidiff`	75	`.I gettidiff`
76	`get the time difference between two dates`	76	`get the time difference between two dates`
77	`.SH VISUALISATION`	77	`.SH VISUALISATION`
78	`Lagranto comes with two packages for visualisation of trajectories: one based on Matlab (www.mathworks.com) and one based on NCL (www.ncl.ucar.edu). Examples are provided in folder "figure" of the Lagranto installation.`	78	`Lagranto comes with two packages for visualisation of trajectories: one based on Matlab (www.mathworks.com) and one based on NCL (www.ncl.ucar.edu). Examples are provided in folder "figure" of the Lagranto installation.`
79	`.SH AUTHOR`	79	`.SH AUTHOR`
80	`Written by Michael Sprenger and Heini Wernli (January 2011)`	80	`Written by Michael Sprenger and Heini Wernli (January 2011)`

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