Published April 19, 2022 | Version INCA 3.3
Dataset Open

INCA-CH seamless nowcasting system, example data

  • 1. MeteoSwiss

Description

INCA-CH seamless nowcasting system

Parameter

Description

Units

Update frequency

Forecast range

Availability after
obs. time**

Output granularity

RR

Precipitation quantitative
(based on CombiPrecip)

mm/h

10 min

0-6 h

7-10 min

10 min

RR_ext*

Precipitation quantitative extended forecast
(based on CombiPrecip)

 mm/h

10 min

0-28/33h

8-11 min

10 min

RP

Precipitation qualitative
(based on radar only)

mm/h

5 min

0-6 h

4-5 min

5 min

RP_ext*

Precipitation qualitative extended forecast
(based on radar only)

mm/h

 5 min

0-28/33h

5-6 min

5 min

RS

Snowfall quantitative (based on CombiPrecip)

mm/h

10 min

0-6 h

5-6 min

10 min

RS_ext*

Snowfall quantitative extended forecast (based on CombiPrecip)

mm/h

10 min

0-28/33h

6-7 min 

10 min

PN

Snowfall qualitative (based on radar only)

mm/h

5 min

0-6 h

5-6 min

5 min

PN_ext*

Snowfall qualitative extended forecast (based on radar only)

mm/h

5 min

0-28/33h

6-7 min

5 min

PT

Precipitation type for RR:
rain, snow, snow-rain, freezing rain, rain and hail (hail first 30min only)

classes (0-5)

10 min

0-6 h

7-10 min

10 min

PT_ext*

Precipitation type for RR_ext, extended forecast:
rain, snow, snow-rain, freezing rain, rain and hail (hail first 30min only)

classes (0-5)

10 min 

0-28/33h

8-11 min

10 min

NT

Precipitation type for RP:
rain, snow, snow-rain, freezing rain, rain and hail (hail first 30min only)

classes (0-5)

5 min

0-6 h

4-5 min

5 min

NT_ext*

Precipitation type for RP_ext extended forecast:
rain, snow, snow-rain, freezing rain, rain and hail (hail first 30min only)

classes (0-5)

5 min 

0-28/33h

5-6 min

5 min

SH_BK_24, SH_BK_12

New snow accumulation: past 24h or 12h

cm

10 min

0 h

15-20 min

-

SH_FC_06

6 h new snow accumulation forecast

cm

10 min

6 h

15-20 min

-

ZS

Snowfall line

m

10 min

0-6 h

13-16 min

60 min

Z0

Zero degree isotherm

m

10 min

0-6 h

13-16 min

60 min

FF, WG, DD, UU, VV

Wind speed, wind gust and wind direction:
hourly mean and hourly max for wind gust

m/s, °

10 min

0-6 h

17-19 min

60 min

FF_10min, WG_10min, DD_10min, UU_10min, VV_10min

Wind speed, wind gust and wind direction:
10 min mean and 10 min max for wind gust

m/s, °

10 min

0-6h

17-19 min

10 min

TT

2 m temperature

°C

10 min

0-6 h

13-16 min

60 min

TT_ext

2 m temperature extended forecast

°C

10 min

0-28/33 h

14-17 min

60 min

TD, RH

2 m dew point and humidity

°C, %

10 min

0-6 h

13-16 min

60 min

TD_ext, RH_ext

2 m dew point and humidity extended forecast

°C, %

10 min

0-28/33 h

14-17 min

60 min

TG

Soil surface temperature

°C

10 min

0-6 h

13-16 min

60 min

CT, CL, CM, CH

Cloud cover: total, low, medium, high

%

10 min

0-6h 

5-10 min

10 min

SU

Relative sunshine duration

 %

10 min

0-6h 

5-10 min

10 min

LI

Lightning counts analysis

 #flash/ 7x7 km²/10 min

10 min

0 h

5 min

 -

CN

Convective inhibition

J/kg

10 min

0 h

14-17 min

-

CP

Convective available potential energy

J/kg

10 min

0 h

14-17 min

-

nx = 710
ny = 640
resolution = 1000 [m]

Coordinates of lower left pixel in Swiss Coordinates CH1903/LV03:
x0 = 255500 [m]
y0 = -159500  [m]

Example how to read INCA netcdf data: https://inca-examples.readthedocs.io/ 

INCA-CH digital elevation Model here: https://zenodo.org/record/7614565

Files

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