Time dimensions of the NetCDF file

Dimension name Description Period of obs.
time_photometer Time for photometer products 1999-2016
time_mld Time for mixing layer depth products 2008-2014
time_lna Time for lidar profiles products 2003-2015
time_moleculaire Index of time dimension for molecular profiles 2003-2015
time Main time 2003-2016

Lidar profiles dimensions

Dimension name Description
binSR SR (scattering ratio) classification bins
binSTRAT STRAT classification bins
range_lna Altitude range for lidar histograms

Classical meteorological measurements

Variable Description Period of obs. Reference
tas_sirta 2-m air temperature, K 2003-2016
hurs_sirta 2-m relative humidity, % 2003-2016
huss_sirta 2-m specific humidity , kg/kg 2003-2016
psl_sirta Sea-level pressure, Pa 2003-2016
sfcWind_sirta 2-m wind speed, m/s 2003-2016
vas_sirta 2-m northward wind, degree 2003-2016
uas_sirta 2-m eastward wind, degree 2003-2016
visi_sirta Visibility, m 2012-2016
pr_sirta Precipitation at surface, kg/m2/s 2003-2014
tas_trps Trappes air temperature, K 2005-2014
hurs_trps Trappes relative humidity, % 2005-2014
psl_trps Trappes Sea-level pressure, hPa 2005-2014
ff_trps Trappes wind speed, m/s 2005-2014
vas_trps Trappes northward wind, degree 2005-2014
uas_trps Trappes eastward wind, degree 2005-2014
visi_trps Trappes Visibility, m 2005-2014
pr_trps Trappes Precipitation at surface, mm/hr 2003-2014
hurs_regional Regional relative humidity, % 2004-2014
pr_regional Regional precipitation rate, mm/h 2004-2014
psl_regional Regional surface air pressure, hpa 2004-2014
uas_regional Regional eastward component of wind, degree 2004-2014
vas_regional Regional northward component of wind, degree 2004-2014
ws_regional Regional wind speed, m/s 2004-2014
tas_regional Regional air temperature, K 2004-2014

Advanced measurements

Variable Description Period of obs. Reference
rlds Surface downwelling longwave radiation, W/m2 2003-2016
rlus Surface downwelling shortwave radiation, W/m2 2007-2016
rsds Surface downwelling shortwave radiation, W/m2 2003-2016
rsus Surface upwelling shortwave radiation, W/m2 2007-2016
hfs(l)s Surface upward sensible (latent) heat flux, W/m2 2006-2014
saa solar_azimuth_angle, degree 2003-2015
sza solar_zenith_angle, degree 2003-2016
stx1 Soil temperature x cm bellow ground level, K 2007-2015
Smx1 Soil moisture x cm bellow ground level, g/cm3 2007-2012
channel_x_mean2 Mean brightness temperature from MSG at x µm, K 2005-2010

Parameters retrieved from observations

Variable Description Period of obs. Reference
cf_nfov_als Lidar cloud fraction 2008-2012 Morille et al. 2007
cf_nfov_lna Lidar cloud fraction 2003-2008 Morille et al. 2007
rsdscs Surface downwelling shortwave radiation for clear sky, W/m2 2003-2015 Long et al. 2006
rldscs Surface downwelling longwave radiation for clear sky, W/m2 2003-2015 Long et al. 2006
tot_cld_tsi Cloud fraction from sky imager 2009-2014
cflw Cloud fraction from longwave radiation 2003-2014 Long et al. 2006
cfsw Cloud fraction from shortwave radiation 2003-2014 Long et al. 2006
cbhx3 Lidar cloud base heigh, m 2008-2013 Morille et al. 2007
aot_x4 Aerosol optical thickness at x nm 2008-2014 Aeronet
water Clear sky integrated watr vapor, kg/m2 2008-2014 Aeronet
angstrom_x-y5 Angstrom exponent between x and y nm, nm 2008-2014 Aeronet
cld_frac Percentage cloudy pixels over 15×15 pixels 2005-2010 Roebeling et al. 2006
clwp_mean Mean cloud liquid water path over 15×15 pixels, g/m2 2005-2010 Roebeling et al. 2006
ctt_mean Mean cloud top temperature over 15×15 pixels, K 2005-2010 Roebeling et al. 2006
reff_mean Mean cloud effective radius over 15×15 pixels, mm 2005-2010 Roebeling et al. 2006
tau_mean Mean cloud optical thickness over 15×15 pixels, g/m2 2005-2010 Roebeling et al. 2006
lwp Liquid_water_path, g/m2 2012-2016
mld Mixing_layer_depth, m 2008-2014
iwv Integrated water vapor, Kg/m2 2006-2016

Vertical lidar measurements

Variable Description Period of obs. Reference
SRhisto Lidar scaterring ratio vertical histograms 2003-2015
STARThisto Lidar STRAT classification vertical histograms 2003-2015 Morille et al. 2007
pr2_mol Lidar molecular profile 2003-2015
norm_height Altitude of normalisation of lidar profiles, m 2003-2015

1x is 5 cm, 10 cm, 20 cm, 30 cm, 50 cm.

2x is 12, 0.6, 0.8, 1.6, 3.8, 10.8 µm.

3x is first layer (1), second layer (2), third layer (3)

4x is 1020, 870, 675, 500, 440, 380, 340 nm.

5x and y are the interval between4 values.

Parameters currently included in SIRTA-ReOBS. First block is for classical meteorological measurements, second block is for more advanced measurements, third block is for parameters retrieved from observations, fourth block is for vertical lidar measurements.

Browse images

Classical meteorological measurements

Advanced measurements

Parameters retrieved from observations

ReOBS version history

version V1-1-1

New variables added :

  • Trappes classical meteorological measurements (« trps_ » prefix)
  • Integrated water vapor calculate by GPS system (iwv)
  • Regional meteorolgy (« _regional » suffix)

Variables modified :

    • Variable cf_nfov splited in two variables :
Variable name Description Period
cf_nfov_als Cloud fraction from als(Aerosol Lidar System) at 355 nm 2008-2012
cf_nfov_lna Cloud fraction from lna(Lidar Nouages Aerosols) at 532 and 1064 nm 2003-2008

Renamed variables :

Old variable name New variable name
mu_fclw std_fclw
mu_cfsw std_cfsw
mu_hfls std_hfls
mu_hfss std_hfss
mu_hurs std_hurs
mu_huss std_huss
mu_ps std_ps
mu_psl std_psl
mu_rlds std_rlds
mu_rlus std_rlus
mu_rsdscs std_rsdscs
mu_rsus std_rsus
mu_sfcWind std_sfcWind
mu_sm5 std_sm5
mu_sm10 std_sm10
mu_sm20 std_sm20
mu_sm50 std_sm50
mu_st5 std_st5
mu_st10 std_st10
mu_st20 std_st20
mu_st50 std_st50
mu_solar_zenith_angle std_solar_zenith_angle
mu_tas std_tas
mu_tot_cld_tsi std_tot_cld_tsi
mu_uas std_uas
mu_vas std_vas
mu_water std_water
mu_cflw std_cflw
mu_rldscs std_rldscs
d_lwp std_lwp
d_prp std_prp
d_reff std_reff
d_sds std_sds
d_tau std_tau
d_visi std_visi
340-440angstrom angstrom_340-440
380-500angstrom angstrom_380-500
440-675angstrom angstrom_440-675
440-870angstrom angstrom_440-870
500-870angstrom angstrom_500-870
sfcWind sfcWind_sirta
tas tas_sirta
hurs hurs_sirta
huss huss_sirta
pr pr_sirta
ps ps_sirta
psl psl_sirta
uas uas_sirta
vas vas_sirta
visi visi_sirta

Deleted variables :

  • Spatial Uncertainty variables
Old variable name