The ExampleSonde data frame has 461 rows and 21 columns.
The columns are different physical measurements made during the balloon's
ascent. ExampleSondeText is an image of a text file that allows for testing the
getsonde function and is an example of a format with metadata used to document a
sounding.
These data are a sounding from a well known field experiment TOGA/COARE studying the
larege scale dynamical relationship of the Tropical Pacific and the atmospshere.
This particular sounding was launched January 17, 1993 17:12 GMT from Kavieng, New Guninea.
To write out the text dataset to a sounding file just use:
This data frame contains the following named components:
time
Time in seconds from the ballon's release, a numeric vector.
press
Pressure (mb), a numeric vector
temp
Dry-bulb Temperature (deg. C), a numeric vector
dewpt
Dew point temperaure (deg. C), a numeric vector
rh
Relative humidity (%), a numeric vector
uwind
East-West component of the wind, a numeric vector
vwind
North-South component of the wind, a numeric vector
wspd
wind speed (m/s), a numeric vector
dir
Wind direction, a numeric vector
dz
Ascension rate (m/s), a numeric vector
lon
Longitude, a numeric vector
lat
Latitude, a numeric vector
rng
range, a numeric vector
az
azimuth (angle along horizon), a numeric vector
alt
altitude (m), a numeric vector
qp
QC flag for pressure, a numeric vector
qt
QC flag for temperature, a numeric vector
qh
QC flag for humidity, a numeric vector
qu
QC flag for U component, a numeric vector
qv
QC flag for V component, a numeric vector
quv
QC flag for ascension rate, a numeric vector
Note
Quality Control (QC) flags are generated locally at JOSS based on either
automated or visual checks made.
999.0 implies the QC information is missing,
1.0 implies datum seems physically reasonable (good),
2.0 implies datum questionable on a physical basis (maybe),
3.0 implies datum seems to be in error (bad),
4.0 implies datum interpolated (estimated),
9.0 implies datum missing in original file.