{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:13.245574", "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-Apr-26_to_2013-Apr-30_56.5_-67.0"}, "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": 2013040002569}, "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": "April 26 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 30 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 53585.0909649746}, "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": ["Antarctica"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Antarctica"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "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": ["Southern Ocean"]}, "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": -67.0}, "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": 56.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "56.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 52.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 62.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -67.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -65.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.97, -68.03], [52.75, -67.5], [52.97, -66.97], [53.5, -66.75], [53.75, -66.85], [54.0, -66.75], [54.25, -66.85], [54.5, -66.75], [54.75, -66.85], [54.82, -66.82], [54.96, -66.5], [54.75, -66.0], [54.97, -65.47], [55.5, -65.25], [56.03, -65.47], [56.2, -65.87], [56.5, -65.75], [56.75, -65.85], [57.0, -65.75], [57.53, -65.97], [57.68, -66.32], [57.75, -66.35], [58.0, -66.25], [58.25, -66.35], [58.5, -66.25], [58.75, -66.35], [59.0, -66.25], [59.53, -66.47], [59.68, -66.82], [59.75, -66.85], [60.0, -66.75], [60.25, -66.85], [60.5, -66.75], [60.75, -66.85], [61.0, -66.75], [61.25, -66.85], [61.5, -66.75], [62.03, -66.97], [62.25, -67.5], [62.03, -68.03], [61.5, -68.25], [61.25, -68.15], [61.0, -68.25], [60.75, -68.15], [60.5, -68.25], [60.25, -68.15], [60.0, -68.25], [59.75, -68.15], [59.5, -68.25], [59.25, -68.15], [59.0, -68.25], [58.75, -68.15], [58.5, -68.25], [57.97, -68.03], [57.82, -67.68], [57.75, -67.65], [57.5, -67.75], [57.25, -67.65], [57.18, -67.68], [57.03, -68.03], [56.5, -68.25], [56.25, -68.15], [56.0, -68.25], [55.75, -68.15], [55.5, -68.25], [55.25, -68.15], [55.0, -68.25], [54.75, -68.15], [54.5, -68.25], [54.25, -68.15], [54.0, -68.25], [53.75, -68.15], [53.5, -68.25], [52.97, -68.03]]]]}, "2013-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.97, -66.03], [51.75, -65.5], [51.97, -64.97], [52.5, -64.75], [52.75, -64.85], [53.0, -64.75], [53.25, -64.85], [53.5, -64.75], [53.75, -64.85], [54.0, -64.75], [54.25, -64.85], [54.5, -64.75], [54.75, -64.85], [55.0, -64.75], [55.53, -64.97], [55.68, -65.32], [55.75, -65.35], [56.0, -65.25], [56.25, -65.35], [56.5, -65.25], [56.75, -65.35], [57.0, -65.25], [57.53, -65.47], [57.68, -65.82], [57.75, -65.85], [58.0, -65.75], [58.53, -65.97], [58.68, -66.32], [58.75, -66.35], [59.0, -66.25], [59.25, -66.35], [59.5, -66.25], [59.75, -66.35], [59.82, -66.32], [59.97, -65.97], [60.5, -65.75], [61.0, -65.96], [61.5, -65.75], [62.03, -65.97], [62.18, -66.32], [62.53, -66.47], [62.75, -67.0], [62.53, -67.53], [62.18, -67.68], [62.03, -68.03], [61.5, -68.25], [61.25, -68.15], [61.0, -68.25], [60.75, -68.15], [60.5, -68.25], [60.25, -68.15], [60.0, -68.25], [59.75, -68.15], [59.5, -68.25], [59.25, -68.15], [59.0, -68.25], [58.75, -68.15], [58.5, -68.25], [57.97, -68.03], [57.82, -67.68], [57.75, -67.65], [57.5, -67.75], [57.25, -67.65], [57.18, -67.68], [57.03, -68.03], [56.5, -68.25], [56.25, -68.15], [56.0, -68.25], [55.75, -68.15], [55.5, -68.25], [55.25, -68.15], [55.0, -68.25], [54.75, -68.15], [54.5, -68.25], [54.25, -68.15], [54.0, -68.25], [53.75, -68.15], [53.5, -68.25], [52.97, -68.03], [52.75, -67.5], [52.97, -66.97], [53.5, -66.75], [53.75, -66.85], [54.0, -66.75], [54.25, -66.85], [54.5, -66.75], [54.75, -66.85], [54.82, -66.82], [54.96, -66.5], [54.82, -66.18], [54.75, -66.15], [54.5, -66.25], [54.25, -66.15], [54.0, -66.25], [53.75, -66.15], [53.5, -66.25], [53.25, -66.15], [53.0, -66.25], [52.75, -66.15], [52.5, -66.25], [51.97, -66.03]]]]}, "2013-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.97, -66.03], [51.75, -65.5], [51.97, -64.97], [52.5, -64.75], [52.75, -64.85], [53.0, -64.75], [53.25, -64.85], [53.5, -64.75], [53.75, -64.85], [54.0, -64.75], [54.25, -64.85], [54.5, -64.75], [54.75, -64.85], [55.0, -64.75], [55.53, -64.97], [55.68, -65.32], [55.75, -65.35], [56.0, -65.25], [56.25, -65.35], [56.5, -65.25], [56.75, -65.35], [57.0, -65.25], [57.53, -65.47], [57.68, -65.82], [57.75, -65.85], [58.0, -65.75], [58.53, -65.97], [58.68, -66.32], [58.75, -66.35], [59.0, -66.25], [59.25, -66.35], [59.5, -66.25], [59.75, -66.35], [59.82, -66.32], [59.97, -65.97], [60.5, -65.75], [61.0, -65.96], [61.5, -65.75], [62.03, -65.97], [62.18, -66.32], [62.53, -66.47], [62.75, -67.0], [62.53, -67.53], [62.18, -67.68], [62.03, -68.03], [61.5, -68.25], [61.25, -68.15], [61.0, -68.25], [60.75, -68.15], [60.5, -68.25], [60.25, -68.15], [60.0, -68.25], [59.75, -68.15], [59.5, -68.25], [59.25, -68.15], [59.0, -68.25], [58.75, -68.15], [58.5, -68.25], [57.97, -68.03], [57.82, -67.68], [57.75, -67.65], [57.5, -67.75], [57.25, -67.65], [57.18, -67.68], [57.03, -68.03], [56.5, -68.25], [56.25, -68.15], [56.0, -68.25], [55.75, -68.15], [55.5, -68.25], [55.25, -68.15], [55.0, -68.25], [54.75, -68.15], [54.5, -68.25], [54.25, -68.15], [54.0, -68.25], [53.75, -68.15], [53.5, -68.25], [52.97, -68.03], [52.75, -67.5], [52.97, -66.97], [53.5, -66.75], [53.75, -66.85], [54.0, -66.75], [54.25, -66.85], [54.5, -66.75], [54.75, -66.85], [54.82, -66.82], [54.96, -66.5], [54.82, -66.18], [54.75, -66.15], [54.5, -66.25], [54.25, -66.15], [54.0, -66.25], [53.75, -66.15], [53.5, -66.25], [53.25, -66.15], [53.0, -66.25], [52.75, -66.15], [52.5, -66.25], [51.97, -66.03]]]]}, "2013-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[58.75, -67.0], [58.97, -66.47], [59.5, -66.25], [59.75, -66.35], [59.82, -66.32], [59.97, -65.97], [60.5, -65.75], [61.0, -65.96], [61.5, -65.75], [62.03, -65.97], [62.18, -66.32], [62.53, -66.47], [62.75, -67.0], [62.53, -67.53], [62.0, -67.75], [61.75, -67.65], [61.5, -67.75], [61.25, -67.65], [61.0, -67.75], [60.75, -67.65], [60.5, -67.75], [60.25, -67.65], [60.0, -67.75], [59.75, -67.65], [59.5, -67.75], [58.97, -67.53], [58.75, -67.0]]], [[[51.75, -65.5], [51.97, -64.97], [52.5, -64.75], [52.75, -64.85], [53.0, -64.75], [53.25, -64.85], [53.5, -64.75], [53.75, -64.85], [54.0, -64.75], [54.25, -64.85], [54.5, -64.75], [54.75, -64.85], [55.0, -64.75], [55.53, -64.97], [55.68, -65.32], [55.75, -65.35], [56.0, -65.25], [56.25, -65.35], [56.5, -65.25], [56.75, -65.35], [57.0, -65.25], [57.53, -65.47], [57.68, -65.82], [57.75, -65.85], [58.0, -65.75], [58.53, -65.97], [58.75, -66.5], [58.53, -67.03], [58.0, -67.25], [57.75, -67.15], [57.68, -67.18], [57.53, -67.53], [57.0, -67.75], [56.75, -67.65], [56.5, -67.75], [55.97, -67.53], [55.75, -67.0], [55.85, -66.75], [55.82, -66.68], [55.75, -66.65], [55.5, -66.75], [54.97, -66.53], [54.82, -66.18], [54.75, -66.15], [54.5, -66.25], [54.25, -66.15], [54.0, -66.25], [53.75, -66.15], [53.5, -66.25], [53.25, -66.15], [53.0, -66.25], [52.75, -66.15], [52.5, -66.25], [51.97, -66.03], [51.75, -65.5]]]]}, "2013-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.97, -66.03], [51.75, -65.5], [51.97, -64.97], [52.5, -64.75], [52.75, -64.85], [53.0, -64.75], [53.25, -64.85], [53.5, -64.75], [53.75, -64.85], [54.0, -64.75], [54.53, -64.97], [54.75, -65.5], [54.53, -66.03], [54.0, -66.25], [53.75, -66.15], [53.5, -66.25], [53.25, -66.15], [53.0, -66.25], [52.75, -66.15], [52.5, -66.25], [51.97, -66.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 11.338757111891624}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.483164934592753}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-13.819372025845837, -9.941395724270308, -11.499268888712209, -9.777259033394557, -6.999381149878332]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-10.631871073939294, -5.473641506607862, -6.598457563259728, -5.642923334455247, -6.221654146543756]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.234536425546503, 7.576109566472999, 6.209377772860098, 5.549923375256713, 4.62581030052462]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.113138553903525, 11.338757111891624, 10.25313285443994, 7.8500711413549595, 4.743257698112757]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5002829556134136, 1.9461310079718148, 1.5313876236965052, 1.454183966744137, 1.5313230361746446]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8688427732214172, 2.3264517250678, 1.8987331558169926, 1.7334738649037889, 1.580161776353226]}}