{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:22:40.207510", "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": "2020-Dec-11_to_2020-Dec-14_5.5_-71.0"}, "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": 2020120001919}, "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 11 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 14 2020"}, "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": 54888.8630816939}, "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": -71.0}, "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": 5.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "5.5\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": 16.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -71.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -69.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-12-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.47, -71.03], [1.25, -70.5], [1.47, -69.97], [2.0, -69.75], [2.25, -69.85], [2.5, -69.75], [2.75, -69.85], [3.0, -69.75], [3.25, -69.85], [3.5, -69.75], [3.75, -69.85], [4.0, -69.75], [4.25, -69.85], [4.5, -69.75], [4.75, -69.85], [5.0, -69.75], [5.25, -69.85], [5.32, -69.82], [5.47, -69.47], [6.0, -69.25], [6.25, -69.35], [6.5, -69.25], [7.03, -69.47], [7.18, -69.82], [7.25, -69.85], [7.5, -69.75], [7.75, -69.85], [7.82, -69.82], [7.97, -69.47], [8.5, -69.25], [8.75, -69.35], [9.0, -69.25], [9.25, -69.35], [9.5, -69.25], [9.75, -69.35], [10.0, -69.25], [10.25, -69.35], [10.5, -69.25], [10.75, -69.35], [11.0, -69.25], [11.25, -69.35], [11.5, -69.25], [11.75, -69.35], [12.0, -69.25], [12.25, -69.35], [12.5, -69.25], [12.75, -69.35], [13.0, -69.25], [13.25, -69.35], [13.5, -69.25], [13.75, -69.35], [14.0, -69.25], [14.25, -69.35], [14.5, -69.25], [14.75, -69.35], [15.0, -69.25], [15.25, -69.35], [15.5, -69.25], [15.75, -69.35], [16.0, -69.25], [16.25, -69.35], [16.5, -69.25], [17.03, -69.47], [17.25, -70.0], [17.03, -70.53], [16.5, -70.75], [16.25, -70.65], [16.0, -70.75], [15.75, -70.65], [15.5, -70.75], [15.25, -70.65], [15.0, -70.75], [14.75, -70.65], [14.5, -70.75], [14.25, -70.65], [14.0, -70.75], [13.75, -70.65], [13.68, -70.68], [13.53, -71.03], [13.0, -71.25], [12.75, -71.15], [12.5, -71.25], [12.25, -71.15], [12.0, -71.25], [11.75, -71.15], [11.5, -71.25], [11.25, -71.15], [11.0, -71.25], [10.75, -71.15], [10.68, -71.18], [10.53, -71.53], [10.0, -71.75], [9.75, -71.65], [9.5, -71.75], [9.25, -71.65], [9.0, -71.75], [8.75, -71.65], [8.5, -71.75], [8.0, -71.54], [7.5, -71.75], [7.25, -71.65], [7.0, -71.75], [6.75, -71.65], [6.5, -71.75], [6.25, -71.65], [6.0, -71.75], [5.75, -71.65], [5.5, -71.75], [5.25, -71.65], [5.0, -71.75], [4.75, -71.65], [4.5, -71.75], [3.97, -71.53], [3.82, -71.18], [3.75, -71.15], [3.5, -71.25], [3.25, -71.15], [3.0, -71.25], [2.75, -71.15], [2.5, -71.25], [2.25, -71.15], [2.0, -71.25], [1.47, -71.03]]]]}, "2020-12-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.47, -71.03], [1.25, -70.5], [1.47, -69.97], [2.0, -69.75], [2.25, -69.85], [2.5, -69.75], [2.75, -69.85], [3.0, -69.75], [3.25, -69.85], [3.5, -69.75], [3.75, -69.85], [4.0, -69.75], [4.25, -69.85], [4.5, -69.75], [4.75, -69.85], [5.0, -69.75], [5.25, -69.85], [5.32, -69.82], [5.47, -69.47], [6.0, -69.25], [6.25, -69.35], [6.5, -69.25], [7.03, -69.47], [7.18, -69.82], [7.25, -69.85], [7.5, -69.75], [7.75, -69.85], [7.82, -69.82], [7.97, -69.47], [8.5, -69.25], [8.75, -69.35], [9.0, -69.25], [9.25, -69.35], [9.5, -69.25], [9.75, -69.35], [10.0, -69.25], [10.25, -69.35], [10.5, -69.25], [10.75, -69.35], [11.0, -69.25], [11.25, -69.35], [11.5, -69.25], [11.75, -69.35], [12.0, -69.25], [12.25, -69.35], [12.5, -69.25], [12.75, -69.35], [13.0, -69.25], [13.25, -69.35], [13.5, -69.25], [13.75, -69.35], [14.0, -69.25], [14.25, -69.35], [14.5, -69.25], [14.75, -69.35], [15.0, -69.25], [15.25, -69.35], [15.5, -69.25], [15.75, -69.35], [16.0, -69.25], [16.25, -69.35], [16.5, -69.25], [17.03, -69.47], [17.25, -70.0], [17.03, -70.53], [16.5, -70.75], [16.25, -70.65], [16.0, -70.75], [15.75, -70.65], [15.5, -70.75], [15.25, -70.65], [15.0, -70.75], [14.75, -70.65], [14.5, -70.75], [14.25, -70.65], [14.0, -70.75], [13.75, -70.65], [13.68, -70.68], [13.53, -71.03], [13.0, -71.25], [12.75, -71.15], [12.5, -71.25], [12.25, -71.15], [12.0, -71.25], [11.75, -71.15], [11.5, -71.25], [11.25, -71.15], [11.0, -71.25], [10.75, -71.15], [10.68, -71.18], [10.53, -71.53], [10.0, -71.75], [9.75, -71.65], [9.5, -71.75], [9.25, -71.65], [9.0, -71.75], [8.75, -71.65], [8.5, -71.75], [8.0, -71.54], [7.5, -71.75], [7.25, -71.65], [7.0, -71.75], [6.75, -71.65], [6.5, -71.75], [6.25, -71.65], [6.0, -71.75], [5.75, -71.65], [5.5, -71.75], [5.25, -71.65], [5.0, -71.75], [4.75, -71.65], [4.5, -71.75], [3.97, -71.53], [3.82, -71.18], [3.75, -71.15], [3.5, -71.25], [3.25, -71.15], [3.0, -71.25], [2.75, -71.15], [2.5, -71.25], [2.25, -71.15], [2.0, -71.25], [1.47, -71.03]]]]}, "2020-12-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.47, -71.03], [1.25, -70.5], [1.47, -69.97], [2.0, -69.75], [2.25, -69.85], [2.5, -69.75], [2.75, -69.85], [3.0, -69.75], [3.25, -69.85], [3.5, -69.75], [3.75, -69.85], [4.0, -69.75], [4.25, -69.85], [4.5, -69.75], [4.75, -69.85], [5.0, -69.75], [5.25, -69.85], [5.32, -69.82], [5.47, -69.47], [6.0, -69.25], [6.25, -69.35], [6.5, -69.25], [7.03, -69.47], [7.18, -69.82], [7.25, -69.85], [7.5, -69.75], [7.75, -69.85], [7.82, -69.82], [7.97, -69.47], [8.5, -69.25], [8.75, -69.35], [9.0, -69.25], [9.25, -69.35], [9.5, -69.25], [9.75, -69.35], [10.0, -69.25], [10.25, -69.35], [10.5, -69.25], [10.75, -69.35], [11.0, -69.25], [11.25, -69.35], [11.5, -69.25], [11.75, -69.35], [12.0, -69.25], [12.25, -69.35], [12.5, -69.25], [12.75, -69.35], [13.0, -69.25], [13.25, -69.35], [13.5, -69.25], [13.75, -69.35], [14.0, -69.25], [14.25, -69.35], [14.5, -69.25], [14.75, -69.35], [15.0, -69.25], [15.25, -69.35], [15.5, -69.25], [15.75, -69.35], [16.0, -69.25], [16.25, -69.35], [16.5, -69.25], [17.03, -69.47], [17.25, -70.0], [17.03, -70.53], [16.5, -70.75], [16.25, -70.65], [16.0, -70.75], [15.75, -70.65], [15.5, -70.75], [15.25, -70.65], [15.0, -70.75], [14.75, -70.65], [14.5, -70.75], [14.25, -70.65], [14.0, -70.75], [13.75, -70.65], [13.68, -70.68], [13.53, -71.03], [13.0, -71.25], [12.75, -71.15], [12.5, -71.25], [12.25, -71.15], [12.0, -71.25], [11.75, -71.15], [11.5, -71.25], [11.25, -71.15], [11.0, -71.25], [10.75, -71.15], [10.68, -71.18], [10.53, -71.53], [10.0, -71.75], [9.75, -71.65], [9.5, -71.75], [9.25, -71.65], [9.0, -71.75], [8.75, -71.65], [8.5, -71.75], [8.0, -71.54], [7.5, -71.75], [7.25, -71.65], [7.0, -71.75], [6.75, -71.65], [6.5, -71.75], [6.25, -71.65], [6.0, -71.75], [5.75, -71.65], [5.5, -71.75], [5.25, -71.65], [5.0, -71.75], [4.75, -71.65], [4.5, -71.75], [3.97, -71.53], [3.82, -71.18], [3.75, -71.15], [3.5, -71.25], [3.25, -71.15], [3.0, -71.25], [2.75, -71.15], [2.5, -71.25], [2.25, -71.15], [2.0, -71.25], [1.47, -71.03]]]]}, "2020-12-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.47, -71.53], [4.25, -71.0], [4.47, -70.47], [5.0, -70.25], [5.25, -70.35], [5.5, -70.25], [6.03, -70.47], [6.25, -71.0], [6.03, -71.53], [5.5, -71.75], [5.25, -71.65], [5.0, -71.75], [4.47, -71.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.287314785218655}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.313960723929759}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-1.7432750589025545, -0.9270428052213902, -1.0477376519301629, -2.650216302201329]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.4899167870193537, 0.33391244411456, 0.4422847826464249, -2.6108897756727742]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.9642299109483226, 3.617791866527756, 3.3746518908979026, 2.921986064435174]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.737020290168118, 4.287314785218655, 4.1658410417794585, 2.9663026822602774]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3322878187739404, 1.6469492522066278, 1.5280939024580136, 1.324385442000569]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5558995532366469, 1.8785205231342639, 1.9153113120980765, 1.3501927130707816]}}