{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:49.738126", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2013-Jul-07_to_2013-Jul-10_7.5_17.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2013070000529}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "July 07 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 10 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 55706.592351912914}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Niger"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 17.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 7.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "7.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 6.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 8.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-07-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.75, 17.5], [6.97, 18.03], [7.5, 18.25], [8.0, 18.04], [8.5, 18.25], [9.03, 18.03], [9.25, 17.5], [9.15, 17.25], [9.25, 17.0], [9.03, 16.47], [8.5, 16.25], [8.25, 16.35], [8.0, 16.25], [7.47, 16.47], [7.32, 16.82], [6.97, 16.97], [6.75, 17.5]]]]}, "2013-07-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.47, 19.03], [6.82, 19.18], [6.85, 19.25], [6.75, 19.5], [6.97, 20.03], [7.32, 20.18], [7.47, 20.53], [8.0, 20.75], [8.53, 20.53], [8.68, 20.18], [9.03, 20.03], [9.25, 19.5], [9.15, 19.25], [9.25, 19.0], [9.15, 18.75], [9.25, 18.5], [9.15, 18.25], [9.25, 18.0], [9.15, 17.75], [9.25, 17.5], [9.15, 17.25], [9.25, 17.0], [9.03, 16.47], [8.5, 16.25], [8.25, 16.35], [8.0, 16.25], [7.47, 16.47], [7.32, 16.82], [6.97, 16.97], [6.82, 17.32], [6.47, 17.47], [6.25, 18.0], [6.35, 18.25], [6.25, 18.5], [6.47, 19.03]]]]}, "2013-07-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.47, 19.03], [6.82, 19.18], [6.85, 19.25], [6.75, 19.5], [6.97, 20.03], [7.32, 20.18], [7.47, 20.53], [8.0, 20.75], [8.53, 20.53], [8.68, 20.18], [9.03, 20.03], [9.25, 19.5], [9.15, 19.25], [9.25, 19.0], [9.15, 18.75], [9.25, 18.5], [9.15, 18.25], [9.25, 18.0], [9.15, 17.75], [9.25, 17.5], [9.15, 17.25], [9.25, 17.0], [9.03, 16.47], [8.5, 16.25], [8.25, 16.35], [8.0, 16.25], [7.47, 16.47], [7.32, 16.82], [6.97, 16.97], [6.82, 17.32], [6.47, 17.47], [6.25, 18.0], [6.35, 18.25], [6.25, 18.5], [6.47, 19.03]]]]}, "2013-07-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.47, 19.03], [6.82, 19.18], [6.85, 19.25], [6.75, 19.5], [6.97, 20.03], [7.32, 20.18], [7.47, 20.53], [8.0, 20.75], [8.53, 20.53], [8.68, 20.18], [9.03, 20.03], [9.25, 19.5], [9.15, 19.25], [9.25, 19.0], [9.15, 18.75], [9.25, 18.5], [9.15, 18.25], [9.25, 18.0], [9.03, 17.47], [8.5, 17.25], [8.25, 17.35], [8.18, 17.32], [8.03, 16.97], [7.5, 16.75], [6.97, 16.97], [6.82, 17.32], [6.47, 17.47], [6.25, 18.0], [6.35, 18.25], [6.25, 18.5], [6.47, 19.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.9755421221615848}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.477393472550666}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [30.991438829577987, 31.24033643314118, 30.941709678685072, 31.437159264933484]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.864489245085224, 28.20036317297746, 27.720590640794967, 28.403857244370386]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.2376521789797295, -2.4501434272100817, -2.6671061053047596, -2.344404473389858]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.6798034384190146, -3.7299054547415267, -3.9755421221615848, -3.4845464213732384]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6030001064739698, -1.9384636520282332, -2.0351180635068076, -1.813577666792082]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8054997719710693, -2.6561757443883005, -2.670585360625094, -2.7257291120962863]}}