CityCLIM 2024 Valencia Airborne Campaign Preliminary Data

CityCLIM brings together and operationalizes climate-related data from real and simulated data sources in the form of in-situ and spaceborne data on one hand and simulated weather model outputs on the other. These data sources fuel the services developed in the scope of the project. However, while spaceborne and weather model data provide comprehensive and up-to-date lay-ers, they lack in resolution to account for finer urban features. In-situ data are timelier and are collected specifically in selected locations of significance for daily life, feeding also into weather modelling to ensure that solutions cannot diverge from observations. Yet, they are not spatially resolved.

Airborne data bridges this by providing land surface temperature (LST) readings at variable res-olutions significantly below spaceborne data. As airborne data can be collected only for specific points in time, it is not intended for operational use during the project. However, there are numer-ous unique uses to this data source. First, it can aid verification and validation of LST readings by other data sources or by algorithmic super-resolution. Second, future commercial and institutional satellite missions provide improved resolutions, allowing the use of airborne data to mimic them as of now unavailable data products and enables devising usecases that are not feasible with current spaceborne resolutions.

The data provided here are preliminary airborne raw data (after calibration) and derived quantities collected as part of the CityCLIM airborne campaign conducted in Valencia on 10.09.2024 and 11.09.2024.

For selected locations, the following files are provided:

File
Description

089_L1rad.tiff
At-sensor radiance in the 8.9 µm band (500 nm bandwidth). Resolution ~4 m. Unit: W/m²/µm.

106_L1rad.tiff
At-sensor radiance in the 10.6 µm band (1060 nm bandwidth). Resolution ~4 m. Unit: W/m²/µm.

122_L1rad.tiff
At-sensor radiance in the 12.2 µm band (750 nm bandwidth). Resolution ~4 m. Unit: W/m²/µm.

089_L2rad.tiff
Ground-leaving radiance after atmospheric correction in the 8.9 µm band. Correction for downwelling is applied during Temperature Emissivity Separation (TES) and is therfore not part of the atmospheric correction. Unit W/m²/µm.

106_L2rad.tiff
Ground-leaving radiance after atmospheric correction in the 10.6 µm band. Correction for downwelling is applied during Temperature Emissivity Separation (TES) and is therfore not part of the atmospheric correction. Unit W/m²/µm.

122_L2rad.tiff
Ground-leaving radiance after atmospheric correction in the 12.2 µm band. Correction for downwelling is applied during Temperature Emissivity Separation (TES) and is therfore not part of the atmospheric correction. Unit W/m²/µm.

089_eps.tiff
TES emissivity estimate 8.9 µm band.

106_eps.tiff
TES emissivity estimate 10.6 µm band.

122_eps.tiff
TES emissivity estimate 12.2 µm band.

LST.tiff
TES land surface temperature estimate. Unit: K.

PXXXXXX.tiff
Accompanying RGB. Resolution ~0.3 m.

--- PRELIMINARY DATA ARE NOT GEO-REFERENCED ---