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Overview

It is often said that 80% of data analysis is spent on the process of cleaning and preparing the data. - Hadley Wickham, Chief Scientist at RStudio

Why Oikolab?

Data scientists or analysts often spend days or weeks looking for and processing historical weather data before they can begin their analysis. Here’s where Oikolab comes in – we do the work, so you don’t have to. We save you the most valuable, scarce, and non-renewable resource in the world – your time.

Oikolab has post-processed hundreds of terabytes of weather data that you can access in seconds - whether you require 1 month or 80 years of weather data.

Datasets

We provide post-processed datasets from national weather agencies such as NCEP/NOAA, ECMWF, and Environment Canada. These data are often publicly available, but come in a format (GRIB) that is very time consuming to download and use.

ERA5 Reanalysis Data ERA5 is the latest generation of the reanalysis dataset produced by ECMWF and is the main dataset that we use for historical data. The next generation of reanalysis data, ERA6, is currently in the works and is expected to be released sometime in 2024.

ERA5 surface data is available from 1940 to present with a 5-day delay, published at around 12 UTC by ECMWF. Once new data is downloaded, it is processed and made available via API with about 1 hour delay.

ERA5Land Reanalysis Data ERA5Land dataset provides higher resolution (9km) than the ERA5 dataset for a selected set of surface-parameters.

Data is available from 1950 to present with a 5-day delay, published at around 12 UTC by ECMWF. New data is downloaded, processed and made available via API with about 1~3 hour delay.

GFS Forecast Data The Global Forecast System (GFS) is a numerical weather prediction model developed and maintained by the National Centers for Environmental Prediction (NCEP), which is part of the National Weather Service (NWS) within the National Oceanic and Atmospheric Administration (NOAA) in the United States. The GFS model is one of the most widely used operational weather forecasting models globally, providing forecasts on a global scale out to 16 days into the future.

GFS data is published four times a day, initialized at 00Z, 06Z, 12Z and 18Z and published around 5 hr 10 minutes after the initialized time. Once published, the dataset is downloaded and made available from Oikolab API with about 15 minute delay.

GEFS Forecast Data The Global Ensemble Forecast System (GEFS) is another numerical weather prediction model developed and maintained by the National Centers for Environmental Prediction (NCEP). Unlike the Global Forecast System (GFS), which produces deterministic forecasts, the GEFS model generates ensemble forecasts, providing a range of possible future weather scenarios based on multiple simulations with slightly different initial conditions or model configurations.

GEFS data is published four times a day, initialized at 00Z, 06Z, 12Z and 18Z and published around 6 hr 30 minutes after the initialized time. Once published, the dataset is downloaded and made available from Oikolab API with about 15 minute delay.

CFS Forecast Data The Climate Forecast System (CFS) is a seasonal forecast model developed by the National Centers for Environmental Prediction (NCEP), which is part of the National Oceanic and Atmospheric Administration (NOAA) in the United States. The CFS model is designed to predict climate variations on seasonal to interannual timescales, typically spanning weeks to months into the future.

CFS data is published four times a day, initialized at 00Z, 06Z, 12Z and 18Z. Currently, only the CFS 00Z hour data is processed and made available from Oikolab API.

HRRR Forecast Data The High-Resolution Rapid Refresh (HRRR) model is an advanced, high-resolution numerical weather prediction model developed by the National Centers for Environmental Prediction (NCEP). The HRRR model is designed to provide short-term, high-resolution forecasts of weather conditions, with a focus on convective weather phenomena such as thunderstorms, heavy precipitation, and other rapidly evolving weather events.

HRRRR hourly dataset is published four times a day, initialized at 00Z, 06Z, 12Z and 18Z with forecast out to 48 hours. Published about 1 hr 35 minutes after the initialization time, this dataset is made available from Oikolab with about 15 minute delay. HRRR-subhourly data is published from NCEP each hour with 1 hr and 25 minutes delay and is made available from Oikolab API with about 5 minute delay.

SILAM Forecast Data The SILAM (System for Integrated modeLling of Atmospheric coMposition) dataset is an advanced modeling system developed by the Finnish Meteorological Institute (FMI) for simulating and forecasting atmospheric composition, including air quality, aerosols, and chemical species such as ozone, nitrogen dioxide, sulfur dioxide, and particulate matter.

SILAM data is published daily at around 06Z.

We're always adding datasets. If you need something that we don’t currently offer, please feel free to reach out and ask.

Type Datasets Spatial
Resolution
Temporal
Resolution
Coverage /
Forecast Horizon
Notes
Historical
Reanalysis
ERA5
ERA5-Land
28km
9km
Hourly
Hourly
1940 - present
1950 - present
Data is made available with 5-day delay
Global
Forecast
GFS 13/25km Hourly 16 days Hourly forecast steps up to 120 hr and 3-hours afterward
Regional
Forecast
HRRR
HRRR-subhourly
NAM-CONUS
3km
3km
3km
Hourly
15 min
Hourly
2 days
18 hrs
60 hrs
Lambert conformal conic projection is re-mapped to regular lat/lon grid
Seasonal
Forecast
CFS 100km 6 hours 9 months
Ensemble
Forecast
GEFS 25km 3 hours 10 days
Air Quality
Forecast
SILAM 20km Hourly 5 days Includes data from 5 previous days

Uses

Here are some examples of what you can do with Oikolab API:

  • Building Simulation - Download TMY or AMY EPW files for any location from 1940 to present.
  • Asset Management - Have assets in hundreds of locations? Download time-series weather data for all locations with a single API call.
  • Climate Change Analysis - Get decades of weather parameter time-series data in seconds.