{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:42.458906", "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": "2017-Dec-03_to_2017-Dec-08_10.0_4.0"}, "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": 2017120001416}, "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": "December 03 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 08 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 89520.54147893644}, "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": ["Cameroon", "Equatorial Guinea", "Gabon"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "Western-Africa"]}, "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": 4.0}, "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": 10.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "10.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 8.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 13.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 0.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 5.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.5, 4.75], [10.03, 4.53], [10.25, 4.0], [10.03, 3.47], [9.5, 3.25], [8.97, 3.47], [8.75, 4.0], [8.97, 4.53], [9.5, 4.75]]]]}, "2017-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.25, 4.5], [8.47, 5.03], [9.0, 5.25], [9.25, 5.15], [9.5, 5.25], [10.03, 5.03], [10.18, 4.68], [10.3, 4.63], [10.47, 5.03], [11.0, 5.25], [11.53, 5.03], [11.75, 4.5], [11.53, 3.97], [11.0, 3.75], [10.7, 3.88], [10.53, 3.47], [10.0, 3.25], [9.75, 3.35], [9.5, 3.25], [8.97, 3.47], [8.82, 3.82], [8.47, 3.97], [8.25, 4.5]]]]}, "2017-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.25, 4.5], [8.47, 5.03], [9.0, 5.25], [9.25, 5.15], [9.5, 5.25], [10.03, 5.03], [10.18, 4.68], [10.3, 4.63], [10.35, 4.75], [10.25, 5.0], [10.47, 5.53], [11.0, 5.75], [11.53, 5.53], [11.75, 5.0], [11.65, 4.75], [11.68, 4.68], [12.03, 4.53], [12.18, 4.18], [12.53, 4.03], [12.68, 3.68], [12.75, 3.65], [13.0, 3.75], [13.53, 3.53], [13.75, 3.0], [13.65, 2.75], [13.75, 2.5], [13.53, 1.97], [13.0, 1.75], [12.75, 1.85], [12.68, 1.82], [12.53, 1.47], [12.18, 1.32], [12.03, 0.97], [11.5, 0.75], [11.25, 0.85], [11.0, 0.75], [10.47, 0.97], [10.32, 1.32], [10.25, 1.35], [10.0, 1.25], [9.47, 1.47], [9.25, 2.0], [9.35, 2.25], [9.25, 2.5], [9.46, 3.0], [9.32, 3.32], [8.97, 3.47], [8.82, 3.82], [8.47, 3.97], [8.25, 4.5]], [[11.25, 3.0], [11.35, 3.25], [11.32, 3.32], [11.07, 3.43], [11.25, 3.0]], [[11.15, 2.75], [11.18, 2.68], [11.25, 2.65], [11.32, 2.68], [11.35, 2.75], [11.25, 3.0], [11.15, 2.75]], [[10.68, 3.68], [10.93, 3.57], [10.82, 3.82], [10.7, 3.88], [10.65, 3.75], [10.68, 3.68]]]]}, "2017-12-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.25, 4.5], [8.47, 5.03], [9.0, 5.25], [9.25, 5.15], [9.5, 5.25], [10.03, 5.03], [10.18, 4.68], [10.3, 4.63], [10.35, 4.75], [10.25, 5.0], [10.47, 5.53], [11.0, 5.75], [11.53, 5.53], [11.75, 5.0], [11.65, 4.75], [11.68, 4.68], [12.03, 4.53], [12.18, 4.18], [12.53, 4.03], [12.68, 3.68], [12.75, 3.65], [13.0, 3.75], [13.53, 3.53], [13.75, 3.0], [13.65, 2.75], [13.75, 2.5], [13.53, 1.97], [13.0, 1.75], [12.75, 1.85], [12.68, 1.82], [12.53, 1.47], [12.18, 1.32], [12.03, 0.97], [11.68, 0.82], [11.53, 0.47], [11.0, 0.25], [10.5, 0.46], [10.0, 0.25], [9.47, 0.47], [9.25, 1.0], [9.35, 1.25], [9.25, 1.5], [9.35, 1.75], [9.25, 2.0], [9.35, 2.25], [9.25, 2.5], [9.46, 3.0], [9.32, 3.32], [8.97, 3.47], [8.82, 3.82], [8.47, 3.97], [8.25, 4.5]], [[11.25, 3.0], [11.35, 3.25], [11.32, 3.32], [11.07, 3.43], [11.25, 3.0]], [[11.15, 2.75], [11.18, 2.68], [11.25, 2.65], [11.32, 2.68], [11.35, 2.75], [11.25, 3.0], [11.15, 2.75]], [[10.68, 3.68], [10.93, 3.57], [10.82, 3.82], [10.7, 3.88], [10.65, 3.75], [10.68, 3.68]]]]}, "2017-12-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.25, 4.5], [8.47, 5.03], [9.0, 5.25], [9.53, 5.03], [9.68, 4.68], [9.75, 4.65], [10.0, 4.75], [10.43, 4.57], [10.25, 5.0], [10.47, 5.53], [11.0, 5.75], [11.53, 5.53], [11.75, 5.0], [11.63, 4.7], [12.03, 4.53], [12.18, 4.18], [12.53, 4.03], [12.68, 3.68], [12.75, 3.65], [13.0, 3.75], [13.53, 3.53], [13.75, 3.0], [13.65, 2.75], [13.75, 2.5], [13.53, 1.97], [13.0, 1.75], [12.75, 1.85], [12.68, 1.82], [12.53, 1.47], [12.18, 1.32], [12.03, 0.97], [11.68, 0.82], [11.53, 0.47], [11.0, 0.25], [10.5, 0.46], [10.0, 0.25], [9.47, 0.47], [9.25, 1.0], [9.35, 1.25], [9.25, 1.5], [9.35, 1.75], [9.25, 2.0], [9.35, 2.25], [9.25, 2.5], [9.46, 3.0], [9.32, 3.32], [8.97, 3.47], [8.82, 3.82], [8.47, 3.97], [8.25, 4.5]], [[11.32, 2.68], [11.35, 2.75], [11.25, 3.0], [11.15, 2.75], [11.18, 2.68], [11.25, 2.65], [11.32, 2.68]], [[11.35, 3.25], [11.32, 3.32], [11.07, 3.43], [11.25, 3.0], [11.35, 3.25]], [[10.75, 4.0], [10.65, 3.75], [10.68, 3.68], [10.93, 3.57], [10.75, 4.0]], [[10.88, 4.3], [10.57, 4.43], [10.75, 4.0], [10.88, 4.3]]]]}, "2017-12-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.35, 1.75], [9.25, 2.0], [9.35, 2.25], [9.25, 2.5], [9.46, 3.0], [9.25, 3.5], [9.35, 3.75], [9.25, 4.0], [9.47, 4.53], [10.0, 4.75], [10.53, 4.53], [10.75, 4.0], [10.65, 3.75], [10.68, 3.68], [11.03, 3.53], [11.25, 3.0], [11.47, 3.53], [12.0, 3.75], [12.25, 3.65], [12.5, 3.75], [13.03, 3.53], [13.25, 3.0], [13.03, 2.47], [12.5, 2.25], [12.25, 2.35], [12.0, 2.25], [11.57, 2.43], [11.75, 2.0], [11.65, 1.75], [11.75, 1.5], [11.65, 1.25], [11.75, 1.0], [11.53, 0.47], [11.0, 0.25], [10.5, 0.46], [10.0, 0.25], [9.47, 0.47], [9.25, 1.0], [9.35, 1.25], [9.25, 1.5], [9.35, 1.75]], [[11.13, 2.7], [11.43, 2.57], [11.25, 3.0], [11.13, 2.7]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.7283300987210168}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.1897472841340657}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.351641632913356, 26.684900741926867, 25.57708470432391, 25.554126094751894, 25.332378153630486, 25.35885727994281]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.351641632913356, 27.387887525005283, 27.850891108616736, 27.46313216175298, 27.40414246395426, 27.406960860626782]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.6709550544019862, 0.9521647169992775, 1.2291246148147024, 1.2822075073707169, 1.1388504038591951, 1.1479716478446886]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.6709550544019862, 1.1612938423634773, 1.6206962198347128, 1.7283300987210168, 1.5682832707765328, 1.3807110928045745]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2387009733370848, 1.4882094035942872, 1.694214311607625, 1.768647074838856, 1.5722815277018103, 1.594684031406148]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2387009733370848, 1.6733593512719132, 2.2768199484160805, 2.1821643856137265, 2.0414409463725556, 1.845719699060158]}}