Category |
Variable |
Unit |
Description and method |
Data
source |
|
Area_km2 |
km² |
Catchment area |
|
Topography |
dem.mean |
mamsl |
Mean elevation of catchment, from DEM
rescaled from 25 to 100 m resolution using average |
EEA
(2013) |
|
dem.median |
mamsl |
Median elevation of catchment, from DEM rescaled
from 25 to 100 m resolution using average |
EEA (2013) |
|
slo.mean |
° |
Mean topographic slope of catchment, from DEM |
EEA
(2013) |
|
slo.median |
° |
Median topographic slope of catchment, from DEM |
EEA
(2013) |
|
twi.mean |
- |
Mean topographic wetness index (TWI, Beven & Kirkby,
1979) |
EEA (2013) |
|
twi.med |
- |
Median topographic wetness index (TWI, Beven & Kirkby,
1979) |
EEA (2013) |
|
twi.90p |
- |
90th percentile of the TWI as a proxy
for riparian wetlands (following Musolff et al., 2018) |
EEA
(2013) |
Land use |
f_artif |
- |
Fraction of artificial land cover (Class 1
Level 1 CORINE) |
CLC (2016) |
|
f_agric |
- |
Fraction of agricultural land cover (Class 2 Level 1
CORINE) |
CLC (2016) |
|
f_forest |
- |
Fraction of forested land cover (Class 3 Level 1
CORINE) |
CLC (2016) |
|
f_wetl |
- |
Fraction of wetland cover (Class 4 Level 1 CORINE) |
CLC
(2016) |
|
f_water |
- |
Fraction of surface water cover ( Lass 5 Level 1
CORINE) |
CLC (2016) |
|
pdens |
inhabitants km-² |
Mean population density |
CIESIN (2017) |
Nutrient sources
|
N_T_YKM2
|
t N
km-2 yr-1
|
Mean N input from point sources (from EU-DWE database)
|
Vigiak et al. (2019); Vigiak et al. (2020)
|
|
BOD_T_YKM2
|
t N
km-2 yr-1
|
Mean biochemical oxygen demand input from point sources (from EU-DWE
database)
|
Vigiak et al. (2019); Vigiak et al. (2020)
|
|
N_T_YEW
|
t N inh-1 y-1
|
Calculated N input per person (from EU-DWE database)
N_T_YKM2 / nEW * Area_km2
|
Vigiak et al. (2019); Vigiak et al. (2020)
|
|
nEW |
- |
Calculated number of inhabitants, pdens * Area_km2 |
CIESIN (2017) |
|
n_UWWTP |
- |
Number of point sources from European database (UWWTP
database) |
EEA (2017) |
Lithology and soils |
f_porous |
- |
Fraction of porous aquifer (code 1
and 2 of aquifer type) |
BGR & UNESCO (eds.) (2014) |
|
f_fissured |
- |
Fraction of fissured aquifer (code 3 and 4 of
aquifer type) |
BGR & UNESCO (eds.) (2014) |
|
f_hard |
- |
Fraction of locally aquiferous and non-aquiferous
aquifer (code 5 and 6 of aquifer type) |
BGR & UNESCO (eds.)
(2014) |
|
f_consol |
- |
Fraction of consolidated rocks (Lithology Level 5) |
BGR & UNESCO (eds.) (2014) |
|
f_part_consol |
- |
Fraction of partly consolidated rocks (Lithology
Level 5) |
BGR & UNESCO (eds.) (2014) |
|
f_unconsol |
- |
Fraction of unconsolidated rocks (Lithology Level 5) |
BGR & UNESCO (eds.) (2014) |
|
dtb.median |
cm |
Median depth to bedrock in the catchment |
Shangguan
et al. (2017) |
|
f_sand
f_silt
f_clay
|
-
|
Mean fraction of sand in soil horizons of the top 100 cm
Mean fraction of silt in soil horizons of the top 100 cm
Mean fraction of clay in soil horizons of the top 100 cm
|
FAO/IIASA/ISRIC/ISSCAS/JRC (2012)
|
|
soilN.mean |
g kg-1
|
Mean top soil N in catchment |
Ballabio et al. (2019) |
|
soilCN.mean |
- |
Mean top soil C/N ratio in catchment |
Ballabio et
al. (2019) |
Hydrology |
Q_mean |
m³ s-1
|
Mean discharge (period
1986-2015 used for all hydrologic variables) |
Musolff (2020); Musolff
et al. (2020); HYDRO MEDDE (2019) |
|
Q_median |
m³ s-1
|
Median discharge |
Musolff
(2020); Musolff et al. (2020); HYDRO MEDDE (2019) |
|
Q_spec |
mm |
Mean annual specific discharge |
Musolff (2020);
Musolff et al. (2020); HYDRO MEDDE (2019) |
|
Q_CVQ |
- |
Coefficient of variation of time series of daily Q |
Musolff (2020); Musolff et al. (2020); HYDRO MEDDE (2019) |
|
Q_medSum |
m³ s-1
|
Median summer discharge (months
May-October) |
Musolff (2020); Musolff et al. (2020); HYDRO MEDDE
(2019) |
|
Q_medWin |
m³ s-1
|
Median winter discharge (months
November-April) |
Musolff (2020); Musolff et al. (2020); HYDRO MEDDE
(2019) |
|
Q_Sum2Win |
- |
Seasonality index of Q, as ratio between median
summer and median winter Q |
Musolff (2020); Musolff et al. (2020);
HYDRO MEDDE (2019) |
|
BFI |
- |
Base flow index calculated according to WMO [2008] with
lfstat package (version 0.9.4) in R |
Musolff (2020); Musolff et al.
(2020); HYDRO MEDDE (2019) |
|
flashi |
- |
Flashiness index of Q as the ratio between 5% percentile
and 95% percentile of Q time series |
Musolff (2020); Musolff et al.
(2020); HYDRO MEDDE (2019) |
Climate |
P_mm |
mm |
Mean annual precipitation (period 1986-2015 used
for all climatic variables) |
Cornes et al. (2018) |
|
P_SIsw |
- |
Seasonality of precipitation as the ratio between mean
summer (Jun-Aug) and winter (Dec-Feb) precipitation |
Cornes et al.
(2018) |
|
P_SI |
- |
Seasonality index of precipitation as the mean difference
between monthly P averages and year average |
Cornes et al.
(2018) |
|
P_lambda |
- |
Mean precipitation frequency λ as used by Botter et
al. (2013) |
Cornes et al. (2018) |
|
P_alpha |
- |
Mean precipitation depth as used by Botter et al.
(2013) |
Cornes et al. (2018) |
|
PET_mm |
mm |
Mean potential evapotranspiration |
Cornes et al.
(2018) |
|
AI |
- |
Aridity index as AI=PET_mm/P_mm |
Cornes et al.
(2018) |
|
T_mean |
°C |
Mean annual temperature |
Cornes et al.
(2018) |