[Bldg-sim] Updated Global Simulation Climate Data Set Available from Climate.OneBuilding.Org

[Dru Crawley]

In April 2022, Climate.OneBuilding.org
<https://climate.onebuilding.org/> posted
a completely updated worldwide TMYx dataset adding more than 2500 new
locations (>15% increase), bringing the total to more than 16,100
locations. These include weather station meteorology data through 2021 and
corresponding solar radiation from the ERA5 reanalysis data set (
www.ecmwf.int/en/forecasts/datasets/reanalysis-datasets/era5). The ERA5
data, courtesy of Oikolab (oikolab.com/), provides a comprehensive,
worldwide gridded solar radiation data set based on satellite data. The new
data (and all other weather files on the site including the 2004-2018 TMYx)
also now include the latest ASHRAE 2021 design conditions.



The TMYx are derived from hourly weather station meteorology data through
2021 in the ISD (US NOAA/NCEI's Integrated Surface Database) and gridded
solar radiation data from ERA5 reanalysis using the TMY2/ISO 15927-4:2005
methodologies. Often, there are two TMYx for a location, e.g., for
Washington Dulles Intl
AP: USA_VA_Dulles-Washington.Dulles.Intl.AP.724030_TMYx and
USA_VA_Dulles-Washington.Dulles.Intl.AP.724030_TMYx.2007-2021.
In these cases, there's a TMY for the entire period of record and a second
TMY for the most recent 15 years (2007-2021). *Not all locations have
recent data*.



With this update, Climate.OneBuilding.org
<https://climate.onebuilding.org/> now
provides TMYx climate data at no cost for more than 16,100 locations in
more than 250 countries and another 3,200 files from other data
sources. All data have been through extensive quality checking to identify
and correct data errors and out of normal range values where appropriate.



Each climate location .zip contains: EPW (EnergyPlus weather format
energyplus.net/), CLM (ESP-r weather format
www.strath.ac.uk/research/energysystemsresearchunit/applications/esp-r/),
WEA (Daysim weather format web.mit.edu/sustainabledesignlab/software.html),
and PVSyst (*NEW! *PV solar design weather format -- www.pvsyst.com/) along
with DDY (updated ASHRAE 2021 design conditions in EnergyPlus format), RAIN
(hourly precipitation in mm, where available), and STAT (expanded
EnergyPlus weather statistics).



For more information or to download any of the weather data (no cost), go
to Climate.OneBuilding.org



TMYx climate files in this update -- locations/recent (2007-2021):

   - WMO Region 1 (Africa) 1303 locations, 1162 recent (^45%)
   - WMO Region 2 (Asia) 2764 locations, 2215 recent (^25%)
   - WMO Region 2 (Asia) / Region 6 (Europe) – Russia 1488 locations, 976
   recent (^6%)
   - WMO Region 3 (South America) 1095 locations, 959 recent (^54%)
   - WMO Region 4 (North and Central America, Caribbean except USA and
   Canada) 450 locations, 411 recent (^35%)
   - WMO Region 4 (USA) 2988 locations, 2713 recent (^16%)
   - WMO Region 4 (Canada) 869 locations, 830 recent (^4%)
   - WMO Region 5 (Southwest Pacific) 1134 locations, 1219 recent (^5%)
   - WMO Region 6 (Europe) 3781 locations, 2455 recent (^9%)
   - WMO Region 7 (Antarctica) 114 locations, 98 recent (^130%)



Another new data set are the hourly Climate Normals for the U.S.
https://www.ncei.noaa.gov/products/land-based-station/us-climate-normals
These are typical climate conditions for thousands of locations across the
United States. Normals are calculated for a uniform 30-year period, and
consist of annual/seasonal, monthly, daily, and hourly averages and
statistics of temperature, precipitation, and other climatological
variables from almost 15,000 U.S. weather stations. We have converted the
hourly normal for the 600 stations available each for 1981-2010, 1991-2020,
and 2006-2020 into EPW and other formats.
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