This dataset provides sub-national indicators on land surface temperature in FUAs and Cities.

Data sources and methodology

Land surface temperature refers to the average temperature of the land surface within a local area, excluding water bodies. Data are available for both daytime and nighttime, as well as annually and by season (summer and winter). These temperatures are derived from MODIS Aqua and Terra satellite observations, which offer high-frequency measurements at a spatial resolution of 1 km.

Defining FUAs and cities

The OECD, in cooperation with the EU, has developed a harmonised definition of functional urban areas (FUAs) to capture the economic and functional reach of cities based on daily commuting patterns (OECD, 2012). FUAs consist of:

1. A city – defined by urban centres in the degree of urbanisation, adapted to the closest local administrative units to define a city.
2. A commuting zone – including all local areas where at least 15% of employed residents work in the city.

The delineation process includes:

• Assigning municipalities surrounded by a single FUA to that FUA.
• Excluding non-contiguous municipalities.

The definition identifies 1 285 FUAs and 1 402 cities in all OECD member countries except Costa Rica and three accession countries.

Cite this dataset

OECD Regions, cities and local areas database (Land surface temperature - Cities and FUAs), http://oe.cd/geostats

Further information

• OECD Local Data Portal
• OECD Regions and Cities at a Glance

For questions and/or comments, please email CitiesStat@oecd.org