This directory contains selected data sets used in the article "Characterization of potential temperature hotspots during urban heat island episodes examined by large eddy simulation and land use regression for the city of Augsburg" (DOI: 10.1127/metz/1252)
Further data will be made available on request.

1. directory "AWS": Automatic weather stations for the time intervals of both PALM-4U model runs.
This directory contains meteorological variables from four Reinhardt stations in Augsburg:
  - potential temperature in K (TpotK)
  - mixing ratio in g/kg (MixRat)
  - wind speed in m/s (Wspd)
  - wind direction in degree (Wdir)

for the stations:
  koenigsplatz = Königsplatz
  rotestor = Rotes Tor
  stephan = St. Stephan (Klostergarten)
  uni2 = University of Augsburg (roof)

Each file contains six columns with the following variables: year month day hour minute variable

UTM 32 coordinates of the stations:
NAME UTMX UTMY
koenigsplatz 640269.92 5358649.39
rotestor 641214.69 5357819.8
stephan 640709.64 5359646.08
uni2 640596 5355239


2. directory "UAS": Vertical UAS measurements for the time interval from 05.06.2019 05:00 UTC to 06.06.2019 05:00 UTC (hourly measurements for sites kap, prp, uni) as well as at 26.06.2019 7:00 CEST (site unisport only)

UTM 32 coordinates of the sites:
NAME UTMX UTMY
unisport 640566 5354732
kap 639857 5357967
prp 639934 5358874
uni 640585 5355388

File names contain the site abbreviation (kap = Kongress am Park, prp = Prinzregentenplatz, uni = a meadow at the University, unisport = a sports ground at the University) as well as date and time of each flight in the format YYYY-MM-DD_HH and measurement device (e.g. OPC-N3, SHT85).
 
relevant variables:
  - shttempc: air temperature in °C
  - shtmixratc: mixing ratio in g/kg
  - wspdc: wind speed in m/s
  - wdirc: wind direction in degree
  - height: given in meter above sea level
 

3. palm_output_subsets.tar.gz: Subsets of PALM-4U output for the model run for the heat day (25.06.2019 12:00 UTC to 27.06.2019 09:00 UTC)

for the 3-dimensional atmospheric variables the lowest 10 height levels were selected
for the 3-dimensional soil variables the uppermost level was selected

included variables:
   - vertical wind component: w
   - horizontal wind speed: ws
   - potential temperature: theta
   - mixing ratio: q
   - turbulence intensity: ti
   - soil moisture: m_soil
   - incoming shortwave radiation: rad_sw_in
   - sensible heat flux: shf*
   - latent heat flux: qsws*
   - ground heat flux: ghf*
   
meaning of the time intervals:
   - timeinterval_1 = morning
   - timeinterval_2 = noon
   - timeinterval_3 = evening
   - timeinterval_4 = first half of the night (after heat day)
   - timeinterval_5 = second half of the night before the heat day
   - timeinterval_6 = second half of the night after the heat day