1. Hong Kong
  2. history+
  3. ERA5 download

history+ is vereist om weergegevens te downloaden

U bent niet ingelogd. Als u history+ al heeft aangeschaft, log alstublieft in .

30 jaar weergegevens per uur met history+

Bekijk historische weergegevens voor Hong Kong met history+. Wereldwijd beschikbaar en onafhankelijk van weerstations. Download consistente en volledige gegevens per uur voor Hong Kong als CSV. U kunt gegevens voor Bazel gratis testen.

Meer informatie over history+


ERA5 downloads are limited to 2019.
Unlimited ERA5 data downloads starting from 1979 are part of history+.

Dates

You can select start and end-dates with the integrated date picker or enter desired date range with your keyboard.

history+ locaties (0/0)

Klanten met een history+ kunnen hier hun gearchiveerde locaties bekijken. Toegang blijft beschikbaar voor 1 jaar. Bazel is beschikbaar voor gratis evaluatie.

Locations

Your activated locations are listed here. You can switch to another location by clicking on the name, or compare data with the current location by checking the box.

Instellingen

Weather variables information

  • Temperature (2m) and relative humidity (2m): Comparable to measurements at 2 meters above ground.
  • Pressure: Atmospheric air pressure reduced to mean sea level as most commonly used for weather reports. The local pressure varies with altitude. Locations at higher elevation have a lower local atmospheric pressure.
  • Precipitation amount: Total precipitation amount including rain, convective precipitation and snow. 1mm at 10:00 is comparable to a rain-gauge measurement from 9:00-10:00.
  • Snowfall amount: Fraction of total precipitation that falls down as snow and is converted to cm instead of mm.
  • Total cloud cover: Percentage of the sky that is covered with clouds: 50% means half of the sky is covered. 0-25% clear sky, 25-50% partly cloudy, 50-85% mostly cloudy and above 85% overcast.
  • Low, mid and high cloud cover: Cloud cover at different altitudes. High clouds (8-15 km) like cirrus are less significant for total cloud cover than low (below 4 km) like stratus, cumulus and fog or mid clouds (4-8 km) like alto cumulus and alto stratus.
  • Solar radiation: Global radiation (diffuse and direct) on a horizontal plane given in Watt per square meter.
  • Wind speed: Hourly average wind speeds at given altitude levels "10 and 80 meters above ground" or pressure level "900 hPa". Units can be selected.
  • Wind direction: Wind direction in degrees seamless from 0° (wind blowing from north), 90° (east wind), 180° (south wind) and 270° (west wind).
  • Wind gusts: Short term wind speed turbulence in an hour. Gusts indicate the level of turbulence as such they could be lower than regular wind speeds.

Graph

This graph allows a quick look over the data that can be downloaded. Long data series are dynamically aggregated to daily or monthly values. It automatically refreshes on changes.

You can zoom by click and drag to left or right. A click on a weather variable name in the legend below the chart hides the data series for better readability.

Help

Instellingen

Tijdzone offset

All data will use the selected timezone. There is no automatic switching for daylight saving time. Data are either summer or winter-time. The current timezone is selected automatically. We highly recommend GMT+00 for further processing.

Per uur / Per dag

Aggregate data to daily minimum, mean, maximum and summation in CSV download. This simplifies further data analyses in external programs.

Units

Parameter voor stijgende temperatuur dagen

Adjust base and limit parameter for growing degree calculation. A limit-value lower than base, calculates the temperature cold sum.

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