{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:27.790448", "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": "2011-Sep-10_to_2011-Sep-13_4.5_7.0"}, "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": 2011090002042}, "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": "September 10 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 13 2011"}, "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": "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": 64325.205404847635}, "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": ["Benin", "Nigeria"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": 7.0}, "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": 4.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "4.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 1.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 5.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 5.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 9.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.0, 8.25], [5.53, 8.03], [5.75, 7.5], [5.63, 7.2], [6.03, 7.03], [6.25, 6.5], [6.03, 5.97], [5.5, 5.75], [4.97, 5.97], [4.8, 6.38], [4.5, 6.25], [3.97, 6.47], [3.75, 7.0], [3.97, 7.53], [4.32, 7.68], [4.47, 8.03], [5.0, 8.25]]]]}, "2011-09-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[2.5, 9.25], [2.75, 9.15], [3.0, 9.25], [3.25, 9.15], [3.5, 9.25], [3.75, 9.15], [3.82, 9.18], [3.85, 9.25], [3.75, 9.5], [3.97, 10.03], [4.5, 10.25], [5.03, 10.03], [5.25, 9.5], [5.15, 9.25], [5.2, 9.13], [5.5, 9.25], [6.03, 9.03], [6.25, 8.5], [6.15, 8.25], [6.25, 8.0], [6.03, 7.47], [5.68, 7.32], [5.63, 7.2], [6.03, 7.03], [6.25, 6.5], [6.15, 6.25], [6.25, 6.0], [6.15, 5.75], [6.25, 5.5], [6.03, 4.97], [5.5, 4.75], [4.97, 4.97], [4.82, 5.32], [4.47, 5.47], [4.32, 5.82], [3.97, 5.97], [3.82, 6.32], [3.47, 6.47], [3.32, 6.82], [2.97, 6.97], [2.8, 7.38], [2.5, 7.25], [2.25, 7.35], [2.0, 7.25], [1.47, 7.47], [1.25, 8.0], [1.47, 8.53], [1.82, 8.68], [1.97, 9.03], [2.5, 9.25]], [[4.32, 7.68], [4.35, 7.75], [4.3, 7.88], [4.18, 7.82], [4.15, 7.75], [4.18, 7.68], [4.25, 7.65], [4.32, 7.68]]]]}, "2011-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[2.5, 9.25], [2.75, 9.15], [3.0, 9.25], [3.25, 9.15], [3.5, 9.25], [3.75, 9.15], [3.82, 9.18], [3.85, 9.25], [3.75, 9.5], [3.97, 10.03], [4.5, 10.25], [5.03, 10.03], [5.25, 9.5], [5.15, 9.25], [5.2, 9.13], [5.5, 9.25], [6.03, 9.03], [6.25, 8.5], [6.15, 8.25], [6.25, 8.0], [6.03, 7.47], [5.68, 7.32], [5.63, 7.2], [6.03, 7.03], [6.25, 6.5], [6.15, 6.25], [6.25, 6.0], [6.15, 5.75], [6.25, 5.5], [6.03, 4.97], [5.5, 4.75], [4.97, 4.97], [4.82, 5.32], [4.47, 5.47], [4.32, 5.82], [3.97, 5.97], [3.82, 6.32], [3.47, 6.47], [3.32, 6.82], [2.97, 6.97], [2.8, 7.38], [2.5, 7.25], [2.25, 7.35], [2.0, 7.25], [1.47, 7.47], [1.25, 8.0], [1.47, 8.53], [1.82, 8.68], [1.97, 9.03], [2.5, 9.25]], [[4.32, 7.68], [4.35, 7.75], [4.3, 7.88], [4.18, 7.82], [4.15, 7.75], [4.18, 7.68], [4.25, 7.65], [4.32, 7.68]]]]}, "2011-09-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": 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"description": "Mean t2m anomaly over entire duration", "value": 1.1717877695822079}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.30930396148466, 25.984627161941944, 26.145748242034415, 26.16037247979449]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.662961289529562, 27.573748178962205, 27.989775560934447, 27.55653813048241]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.1026660109026807, 1.077267000964336, 1.2212834841289084, 1.2266873606075976]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.1768146257120975, 1.4041820442224662, 1.949055386335715, 1.4229477369941037]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.468479093161779, 1.406185185750157, 1.563967264929805, 1.6462235435001997]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.517254997454411, 1.8432516344906493, 1.9192607283307819, 2.274239310180739]}}