{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:10.709281", "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": "2015-Jan-09_to_2015-Jan-17_9.0_44.0"}, "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": 2015010002053}, "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": "January 09 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 17 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 56088.778382321965}, "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": ["France", "Italy"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "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": ["Ligurian Sea", "Mediterranean Sea - Western Basin", "Tyrrhenian Sea"]}, "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": 44.0}, "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": 9.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "9.0\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": 10.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 42.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 44.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.47, 42.97], [6.25, 43.5], [6.47, 44.03], [7.0, 44.25], [7.53, 44.03], [7.75, 43.5], [7.53, 42.97], [7.0, 42.75], [6.47, 42.97]]], [[[8.47, 43.47], [8.25, 44.0], [8.47, 44.53], [9.0, 44.75], [9.53, 44.53], [9.75, 44.0], [9.53, 43.47], [9.0, 43.25], [8.47, 43.47]]]]}, "2015-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.47, 44.03], [6.82, 44.18], [6.97, 44.53], [7.5, 44.75], [7.75, 44.65], [8.0, 44.75], [8.25, 44.65], [8.5, 44.75], [8.75, 44.65], [9.0, 44.75], [9.25, 44.65], [9.5, 44.75], [10.03, 44.53], [10.25, 44.0], [10.15, 43.75], [10.25, 43.5], [10.15, 43.25], [10.25, 43.0], [10.03, 42.47], [9.5, 42.25], [9.25, 42.35], [9.18, 42.32], [9.03, 41.97], [8.5, 41.75], [8.25, 41.85], [8.0, 41.75], [7.47, 41.97], [7.32, 42.32], [7.25, 42.35], [7.0, 42.25], [6.47, 42.47], [6.25, 43.0], [6.35, 43.25], [6.25, 43.5], [6.47, 44.03]]]]}, "2015-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.47, 44.03], [6.82, 44.18], [6.97, 44.53], [7.5, 44.75], [7.75, 44.65], [8.0, 44.75], [8.25, 44.65], [8.5, 44.75], [8.75, 44.65], [9.0, 44.75], [9.25, 44.65], [9.5, 44.75], [10.03, 44.53], [10.25, 44.0], [10.15, 43.75], [10.25, 43.5], [10.15, 43.25], [10.25, 43.0], [10.03, 42.47], [9.5, 42.25], [9.25, 42.35], [9.18, 42.32], [9.03, 41.97], [8.5, 41.75], [8.25, 41.85], [8.0, 41.75], [7.47, 41.97], [7.32, 42.32], [7.25, 42.35], [7.0, 42.25], [6.47, 42.47], [6.25, 43.0], [6.35, 43.25], [6.25, 43.5], [6.47, 44.03]]]]}, "2015-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.47, 44.03], [6.82, 44.18], [6.97, 44.53], [7.5, 44.75], [7.75, 44.65], [8.0, 44.75], [8.25, 44.65], [8.5, 44.75], [8.75, 44.65], [9.0, 44.75], [9.25, 44.65], [9.5, 44.75], [10.03, 44.53], [10.25, 44.0], [10.15, 43.75], [10.25, 43.5], [10.15, 43.25], [10.25, 43.0], [10.03, 42.47], [9.5, 42.25], [9.25, 42.35], [9.18, 42.32], [9.03, 41.97], [8.5, 41.75], [8.25, 41.85], [8.0, 41.75], [7.47, 41.97], [7.32, 42.32], [7.25, 42.35], [7.0, 42.25], [6.47, 42.47], [6.25, 43.0], [6.35, 43.25], [6.25, 43.5], [6.47, 44.03]]]]}, "2015-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.0, 44.75], [9.53, 44.53], [9.75, 44.0], [9.53, 43.47], [9.0, 43.25], [8.47, 43.47], [8.25, 44.0], [8.47, 44.53], [9.0, 44.75]]]]}, "2015-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.97, 42.97], [6.75, 43.5], [6.97, 44.03], [7.5, 44.25], [7.75, 44.15], [7.82, 44.18], [7.97, 44.53], [8.5, 44.75], [8.75, 44.65], [9.0, 44.75], [9.25, 44.65], [9.5, 44.75], [10.03, 44.53], [10.18, 44.18], [10.53, 44.03], [10.75, 43.5], [10.53, 42.97], [10.0, 42.75], [9.5, 42.96], [9.0, 42.75], [8.75, 42.85], [8.5, 42.75], [8.25, 42.85], [8.0, 42.75], [7.75, 42.85], [7.5, 42.75], [6.97, 42.97]]]]}, "2015-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.0, 44.75], [8.25, 44.65], [8.32, 44.68], [8.47, 45.03], [9.0, 45.25], [9.25, 45.15], [9.5, 45.25], [9.75, 45.15], [10.0, 45.25], [10.53, 45.03], [10.75, 44.5], [10.54, 44.0], [10.75, 43.5], [10.65, 43.25], [10.75, 43.0], [10.65, 42.75], [10.75, 42.5], [10.53, 41.97], [10.0, 41.75], [9.47, 41.97], [9.25, 42.5], [9.35, 42.75], [9.3, 42.88], [9.0, 42.75], [8.75, 42.85], [8.5, 42.75], [8.25, 42.85], [8.0, 42.75], [7.75, 42.85], [7.5, 42.75], [6.97, 42.97], [6.75, 43.5], [6.97, 44.03], [7.32, 44.18], [7.47, 44.53], [8.0, 44.75]]]]}, "2015-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.0, 44.75], [8.25, 44.65], [8.32, 44.68], [8.47, 45.03], [9.0, 45.25], [9.25, 45.15], [9.5, 45.25], [9.75, 45.15], [10.0, 45.25], [10.53, 45.03], [10.75, 44.5], [10.54, 44.0], [10.75, 43.5], [10.65, 43.25], [10.75, 43.0], [10.65, 42.75], [10.75, 42.5], [10.53, 41.97], [10.0, 41.75], [9.47, 41.97], [9.25, 42.5], [9.35, 42.75], [9.3, 42.88], [9.0, 42.75], [8.75, 42.85], [8.5, 42.75], [8.25, 42.85], [8.0, 42.75], [7.75, 42.85], [7.5, 42.75], [6.97, 42.97], [6.75, 43.5], [6.97, 44.03], [7.32, 44.18], [7.47, 44.53], [8.0, 44.75]]]]}, "2015-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.65, 42.75], [10.75, 42.5], [10.53, 41.97], [10.0, 41.75], [9.47, 41.97], [9.25, 42.5], [9.35, 42.75], [9.25, 43.0], [9.47, 43.53], [10.0, 43.75], [10.53, 43.53], [10.75, 43.0], [10.65, 42.75]]], [[[9.25, 45.15], [9.5, 45.25], [9.75, 45.15], [10.0, 45.25], [10.53, 45.03], [10.75, 44.5], [10.53, 43.97], [10.0, 43.75], [9.75, 43.85], [9.5, 43.75], [9.25, 43.85], [9.0, 43.75], [8.7, 43.88], [8.53, 43.47], [8.0, 43.25], [7.47, 43.47], [7.25, 44.0], [7.47, 44.53], [8.0, 44.75], [8.3, 44.63], [8.47, 45.03], [9.0, 45.25], [9.25, 45.15]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.219193548759165}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.971652117195297}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.969189117412498, 13.774525334651287, 13.841526601731914, 13.10262720105294, 14.030199634754865, 13.567310102020656, 11.979879094569071, 12.665095714064535, 9.749031905167215]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.075383403811202, 15.684491221055794, 15.100805810950476, 14.616443887220953, 14.030199634754865, 14.163461451390503, 14.3123456740189, 14.807077643105629, 13.939091379116633]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.1569032052430543, 2.986064335310466, 3.119016413167113, 2.4862191811930208, 2.324989028545019, 2.3455218024599347, 2.896406837715095, 3.693264094549091, 3.594690255989851]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.2473331586553513, 6.219193548759165, 5.34617657842557, 3.53200364482268, 2.324989028545019, 2.7036639064185692, 4.264960902952055, 5.526138685472517, 5.785547330565578]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.216812146656396, 1.7260849329219128, 1.809143583161624, 1.430705262901184, 1.264709219562517, 1.3166542224229738, 1.4443588716995863, 1.8654574170619027, 1.5238689163120978]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3063440078111261, 2.593250907377822, 2.6039541333462193, 1.62654522207148, 1.264709219562517, 1.3868054500474996, 1.5960128774048568, 2.3502874684996264, 1.9312036540593502]}}