DOI: 10.5281/zenodo.15129786
title: Co-UDlabs _TA_20/06_INSA-GROOF: Sub-hourly Hydro-Meteorological Data of Green Roof Test Plots with Different Dimensions (1m x 1m and 3m x 3m) in Lyon, France

description: General description

This repository includes the datasets of the Co-UDlabs Transnational Access Project INDOOR-GRASP (Intercomparison of the hydrological Response of Green Roofs Across Scales, sites and experimental setups). The novelty of this project lies especially in the idea to conduct a paired green roof experiment, considering open site experimental plots at INSA Lyon (GROOF) and smaller indoor test plots built in the laboratory. Therefore, a 3x3 sq. m and a 1x1 sq. m test plot have been installed at the GROOF facility on the roof a building of the Institut National des Sciences Appliquées (INSA, Lyon). Measurements have been collected between September 2024 and March 2025. The project aims at developing a model which can be utilized to scale between both type of dimensions. In a later step, indoor experiments are also foreseen to focus on differences between open field and indoor test plots for green roofs. Whilst being a fascinating research question itself, it has high practical relevance: with this approach, the results of shorter (indoor) measurement campaigns can be scaled to long-term behavior through the outcome of this paired experimental and hydrological model approach. New green roof products can be tested more readily in order to proof their functionality.

 

Data description

indoor_grasp.csv file (time series)

temporal resolution: 1 min.

Description of columns:






Quantity



Unit





Temperature



°C





Relative Humidity



%





Wind speed



m/s





Solar radiation



W/m^2





Precipitation



mm/min





Weight (3x3)



kg





Runoff (3x3)



mm/min





Weight (1x1)



kg





Runoff (1x1)



mm/min





 

missing_values.json file

This file includes all data gaps in a machine-readable format

 

Log files for the 1x1 and 3x3 sq. m green roof experiments

3x3 sq. m setup

EVENTS OVER THE PERIOD

09/24/2024 14:10-14:30 12:10-12:30UTC: Watering of the JIM roof

09/30/2024 15:00-15:10 13:00-13:10UTC: Watering of the JIM roof

10/17/2024 15:30-16:00 13:30-14:00UTC: Reboot of the PC and time reset on the Campbell central unit

10/31/2024 10:00-11:00 09:00-10:00UTC: Disconnection of the weight measurement system to install the 1m² roof

11/04/2024 10:30-12:00 09:30-11:00UTC: Verification of 10g trays of JIM, pluviometer and 1m² roof

no event in December

no event in January

02/06/2025: visit

02/13/2025 10:19:00: Time adjustment of control centers

02/25/2025: visit

02/26/2025: visit

03/26/2025: visit

 

RAW DATA

Sept/Oct: Only 2 minutes of data are missing in the raw dataset (10/17/2024 - 14:12 and 14:13UTC), likely due to intervention on the central unit that day. Maximum and minimum wind speeds have been filled by propagating the last recorded value. The mass of JIM, air temperature, humidity, wind speed, wind direction, solar radiation, evaporation, and Qt_tot were filled by linear interpolation. The two watering events explain the observed peaks in outflow from the roof on September 24 and 30. The disconnection of the weight measurement system on 10/31/2024 at 08:59 UTC caused a negative spike in weight tracking. This value was corrected, as the weights recorded in the minutes before and after were identical (at 956kg).

Nov: No minutes are missing in November.

The tips from November 4th for JIM and the pluviometer were erased.

Dec: No minutes are missing in December.

Jan: No minutes are missing in January.

Feb: No minutes are missing in February. A correction was made on 02/13/2025 at 10:19 on JIM’s weight, probably due to the synchronization of the control center. Since the points before and after were at 1037 kg, the point at 10:19 was also set to 1037 kg.

March: No minutes are missing in March.

 

1x1 sq. m setup

EVENTS OVER THE PERIOD

11/04/2024 14:15-15:30 13:15-14:30UTC: Verification of the rain gauge buckets and the 1x1 roof.

no event in December

no event in January

02/06/2025: visit

02/13/2025 10:19:00: Time adjustment of control centers

02/25/2025: visit

02/26/2025: visit

RAW DATA

Nov/Dec:  No minutes are missing in November and December. The tips from November 4th for 1x1 and the pluviometer were erased.

Jan: No minutes are missing in January.

Feb: No minutes are missing in February.

March: No minutes are missing in March. A correction on the 1x1 weight was made on 03/26/2025 between 13:33 and 13:39. These weights were fixed at 156.6 kg due to some unusual values, probably caused by the visit.

 

Acknowledgements

The authors acknowledge financial support from the European Union under the Horizon 2020 program within acontract for Integrating Activities for Starting Communities (Ref. 101008626).