diff --git a/man/hysplit_trajectory.Rd b/man/hysplit_trajectory.Rd
index 903d8be7..524be3fc 100644
--- a/man/hysplit_trajectory.Rd
+++ b/man/hysplit_trajectory.Rd
@@ -7,9 +7,9 @@
 hysplit_trajectory(lat = 49.263, lon = -123.25, height = 50,
   duration = 24, days = NULL, daily_hours = 0,
   direction = "forward", met_type = "reanalysis", vert_motion = 0,
-  model_height = 20000, extended_met = FALSE, traj_name = NULL,
-  binary_path = NULL, met_dir = NULL, exec_dir = NULL,
-  clean_up = TRUE)
+  model_height = 20000, extended_met = FALSE, config = NULL,
+  ascdata = NULL, traj_name = NULL, binary_path = NULL,
+  met_dir = NULL, exec_dir = NULL, clean_up = TRUE)
 }
 \arguments{
 \item{lat, lon}{The starting latitude and longitude (in decimal degrees) for
@@ -48,6 +48,15 @@ magnitude).}
 \item{extended_met}{An option to report additional meteorological data along
 each output trajectory.}
 
+\item{config}{A configuration list serves to internally generate the
+\code{SETUP.CFG} file. This list can be easily created by using the
+\code{\link[=set_config]{set_config()}} function. If \code{NULL}, then the default configuration list
+will be generated.}
+
+\item{ascdata}{An ascdata list that will be used to create the \code{ASCDATA.CFG}
+file. This list can be provided through use of the \code{\link[=set_ascdata]{set_ascdata()}}
+function. If \code{NULL}, then the default ascdata list will be generated.}
+
 \item{traj_name}{An optional, descriptive name for the output file
 collection.}
 
diff --git a/man/set_config.Rd b/man/set_config.Rd
new file mode 100644
index 00000000..8b3e64b7
--- /dev/null
+++ b/man/set_config.Rd
@@ -0,0 +1,146 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/set_config.R
+\name{set_config}
+\alias{set_config}
+\title{Create a configuration list for a trajectory or dispersion model}
+\usage{
+set_config(tratio = 0.75, initd = 0, kpuff = 0, khmax = 9999,
+  kmixd = 0, kmix0 = 250, kzmix = 0, kdef = 0, kbls = 1,
+  kblt = 2, conage = 48, numpar = 2500, qcycle = 0, efile = NULL,
+  tkerd = 0.18, tkern = 0.18, ninit = 1, ndump = 1, ncycl = 1,
+  pinpf = "PARINIT", poutf = "PARDUMP", mgmin = 10, kmsl = 0,
+  maxpar = 10000, cpack = 1, cmass = 0, dxf = 1, dyf = 1,
+  dzf = 0.01, ichem = 0, maxdim = 1, kspl = 1, krnd = 6,
+  frhs = 1, frvs = 0.01, frts = 0.1, frhmax = 3, splitf = 1,
+  tm_pres = 0, tm_tpot = 0, tm_tamb = 0, tm_rain = 0,
+  tm_mixd = 0, tm_relh = 0, tm_sphu = 0, tm_mixr = 0,
+  tm_dswf = 0, tm_terr = 0)
+}
+\arguments{
+\item{tratio}{The advection stability ratio. By default, this is set to
+\code{0.75}.}
+
+\item{initd}{The initial distribution. Set to \code{0} by default.}
+
+\item{kpuff}{The horizontal puff dispersion growth. Setting to \code{0} results in
+linear growth whereas option \code{1} uses an empirical growth scheme. By
+default, this is set to \code{0} (linear growth).}
+
+\item{khmax}{The maximum duration (in hours) for a particle or trajectory.
+This is set to the absolute maximum by default, which is \code{9999} hours.}
+
+\item{kmixd}{The methodology for modeling the mixed layer depth. There are
+three options: \code{0} for using the input (the default), \code{1} for using
+temperature, and \code{2} for using the TKE.}
+
+\item{kmix0}{The minimum mixing depth in meters. This is \code{250} by default.}
+
+\item{kzmix}{How to perform vertical mixing adjustments. There are three
+options: \code{0} for not doing this at all (the default), \code{1} uses the PBL
+average, and \code{3} scales with \emph{TVMIX}.}
+
+\item{kdef}{The modeling method for horizontal turbulence. We can use the
+vertical with option \code{0} (the default), or, use the deformation method with
+option \code{1}.}
+
+\item{kbls}{How to derive the boundary layer stability. Two options are
+available for this. We can use fluxes (option \code{1}, default) or use wind
+temperature (option \code{2}).}
+
+\item{kblt}{The boundary layer turbulence parameterization to use. This can
+either be Beljaars (option \code{1}), Kanthar (option \code{2}, default), or TKE
+(option \code{3}).}
+
+\item{conage}{Particle to- or from-puff conversion at \emph{CONAGE}. In units of
+hours, with a default of \code{48}.}
+
+\item{numpar}{The number of puffs or particles released per cycle. By default
+this is set to \code{2500}.}
+
+\item{qcycle}{An optional cycling of emissions, in units of hours.}
+
+\item{efile}{An absolute path to an optional temporal emissions file.}
+
+\item{tkerd}{The unstable turbulent kinetic energy ratio. This is set to
+\code{0.18}.}
+
+\item{tkern}{The stable turbulent kinetic energy ratio. This is set to
+\code{0.18}.}
+
+\item{ninit}{How to do particle initialization; with \code{0} no particle
+initialization is done, with \code{1} this is done once, options \code{2} and \code{3} are
+the \emph{add} and \emph{replace} methods.}
+
+\item{ndump}{Should the particles be dumped to a file and, if so, how often?
+Using \code{0} results in no writing particles to file (the default), and any
+non-zero value performs this writing once per number of hours specified.}
+
+\item{ncycl}{The \emph{PARDUMP} output cycle time.}
+
+\item{pinpf}{The particle input file name (default is \code{"PARINIT"}). This is
+useful for initialization or boundary conditions.}
+
+\item{poutf}{The particle output  file name (default is \code{"PARDUMP"}).}
+
+\item{mgmin}{The minimum meteorological subgrid size. The default value is
+\code{10}.}
+
+\item{kmsl}{The starting height reference. If it is to signify a distance
+above ground level (AGL) then use option \code{0} (the default). If it is
+instead relative to mean sea level, then option \code{1} should be used.}
+
+\item{maxpar}{The maximum number of particles to be carried in simulation. By
+default this is \code{10000}.}
+
+\item{cpack}{The binary concentration packing. Here are the options: \code{0} for
+none, \code{1} for nonzero, \code{2} for points, and \code{3} for polar. Option \code{1} is the
+default option.}
+
+\item{cmass}{Informs grid computation. The two options are to compute grid
+concentrations (with \code{0}, the default) or to compute grid mass (option
+\code{1}).}
+
+\item{dxf, dyf}{The horizontal x- and y-grid adjustment factors for an
+ensemble. By default, these are both set to \code{1.0}.}
+
+\item{dzf}{The vertical factor for an ensemble. This is \code{0.01} by default.}
+
+\item{ichem}{The chemistry conversion module to employ. Option \code{0} does no
+chemistry (the default). With option \code{1} we use a matrix method, option \code{2}
+does conversion, and option \code{3} works on dust.}
+
+\item{maxdim}{The maximum number of pollutants to carry on one particle. By
+default, this is \code{1}.}
+
+\item{kspl}{The standard splitting interval in units of hours. By default,
+this is \code{1} hour.}
+
+\item{krnd}{The enhanced merge interval in hours. By default this is \code{6}
+hours.}
+
+\item{frhs}{The standard horizontal puff rounding fraction for the merge
+process. This is \code{1.0} by default.}
+
+\item{frvs}{The vertical puff rounding fraction, which is \code{0.01} by default.}
+
+\item{frts}{The temporal puff rounding fraction, which is \code{0.10} by default.}
+
+\item{frhmax}{The maximum value for the horizontal rounding parameter. This
+is \code{3.0} by default.}
+
+\item{splitf}{The automatic size adjustment factor for horizontal splitting.
+By default, the value is \code{1.0}.}
+
+\item{tm_pres, tm_tpot, tm_tamb, tm_rain, tm_mixd, tm_relh, tm_sphu, tm_mixr, tm_dswf, tm_terr}{Options to include meteorology along trajectory points. These are the
+pressure variable marker flag (\code{tm_pres}), the potential temperature
+(\code{tm_tpot}), the ambient temperature (\code{tm_tamb}), the rainfall rate
+(\code{tm_rain}), the mixed layer depth (\code{tm_mixd}), the relative humidity
+(\code{tm_relh}), the specific humidity (\code{tm_sphu}), the mixing rate
+(\code{tm_mixr}), the downward short-wave flux (\code{tm_dswf}), and the terrain
+height (\code{tm_terr}). Setting any of these to \code{0} disables output, whereas
+\code{1} will enable output of these data points. By default, all are set to
+\code{0}.}
+}
+\description{
+Create a configuration list for a trajectory or dispersion model
+}