23 September 2020 - 23 October 2020
Participate from anywhere through Geo-Wiki
We are excited to announce the start of a new campaign to help us validate a global built-up surface layer produced by the Joint Research Center of the European Commission called the Global Human Settlement Layer.
As in previous campaigns, we will ask you to shade the grid cells if they contain any built-up features. We will aim to validate 50K points at least 5 times during the campaign, which will launch on 23rd September 2020. Put this date in your diary and join our campaign, with prizes and co-authorship to be won for participation.
Last edited: 22 September 2020
Lesiv, M. , Laso Bayas, J.C. , See, L. , Dürauer, M., Dahlia, D., Durando, N., Hazarika, R., Sahariah, P.K., et al. (2019). Estimating the Global Distribution of Field Size using Crowdsourcing. Global Change Biology 25 (1), 174-186. 10.1111/gcb.14492.
Laso Bayas, J.C. , Lesiv, M. , Waldner, F., Schucknecht, A., Duerauer, M., See, L. , Fritz, S., Fraisl, D. , et al. (2017). A global reference database of crowdsourced cropland data collected using the Geo-Wiki platform. Scientific Data 4, e170136. 10.1038/sdata.2017.136.
See, L. , Fritz, S., Dias, E., Hendriks, E., Mijling, B., Snik, F., Stammes, P., Vescovi, F.D., et al. (2016). Supporting Earth-Observation Calibration and Validation: A new generation of tools for crowdsourcing and citizen science. IEEE Geoscience and Remote Sensing Magazine 4 (3), 38-50. 10.1109/MGRS.2015.2498840.
International Institute for Applied Systems Analysis (IIASA)
Schlossplatz 1, A-2361 Laxenburg, Austria
Phone: (+43 2236) 807 0 Fax:(+43 2236) 71 313