{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:25.402005", "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": "2012-Jan-03_to_2012-Jan-06_46.0_-66.5"}, "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": 2012010001905}, "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 03 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 06 2012"}, "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": 69533.16331465794}, "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": -66.5}, "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": 46.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "46.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 40.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 49.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -68.25}, "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": {"2012-01-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.25, -65.5], [40.47, -64.97], [41.0, -64.75], [41.25, -64.85], [41.5, -64.75], [41.75, -64.85], [42.0, -64.75], [42.25, -64.85], [42.5, -64.75], [42.75, -64.85], [43.0, -64.75], [43.53, -64.97], [43.68, -65.32], [43.75, -65.35], [44.0, -65.25], [44.25, -65.35], [44.5, -65.25], [44.75, -65.35], [45.0, -65.25], [45.25, -65.35], [45.5, -65.25], [46.03, -65.47], [46.18, -65.82], [46.25, -65.85], [46.5, -65.75], [46.75, -65.85], [47.0, -65.75], [47.25, -65.85], [47.5, -65.75], [47.75, -65.85], [48.0, -65.75], [48.53, -65.97], [48.68, -66.32], [48.75, -66.35], [49.0, -66.25], [49.53, -66.47], [49.68, -66.82], [50.03, -66.97], [50.25, -67.5], [50.03, -68.03], [49.68, -68.18], [49.53, -68.53], [49.0, -68.75], [48.75, -68.65], [48.5, -68.75], [48.25, -68.65], [48.0, -68.75], [47.75, -68.65], [47.5, -68.75], [46.97, -68.53], [46.82, -68.18], [46.75, -68.15], [46.5, -68.25], [46.25, -68.15], [46.0, -68.25], [45.75, -68.15], [45.5, -68.25], [45.25, -68.15], [45.0, -68.25], [44.75, -68.15], [44.5, -68.25], [43.97, -68.03], [43.82, -67.68], [43.75, -67.65], [43.5, -67.75], [43.25, -67.65], [43.0, -67.75], [42.75, -67.65], [42.5, -67.75], [42.25, -67.65], [42.0, -67.75], [41.75, -67.65], [41.5, -67.75], [40.97, -67.53], [40.75, -67.0], [40.96, -66.5], [40.82, -66.18], [40.47, -66.03], [40.25, -65.5]]]]}, "2012-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.25, -65.5], [40.47, -64.97], [41.0, -64.75], [41.25, -64.85], [41.5, -64.75], [41.75, -64.85], [42.0, -64.75], [42.25, -64.85], [42.5, -64.75], [42.75, -64.85], [43.0, -64.75], [43.53, -64.97], [43.68, -65.32], [43.75, -65.35], [44.0, -65.25], [44.25, -65.35], [44.5, -65.25], [44.75, -65.35], [45.0, -65.25], [45.25, -65.35], [45.5, -65.25], [46.03, -65.47], [46.18, -65.82], [46.25, -65.85], [46.5, -65.75], [46.75, -65.85], [47.0, -65.75], [47.25, -65.85], [47.5, -65.75], [47.75, -65.85], [48.0, -65.75], [48.53, -65.97], [48.68, -66.32], [48.75, -66.35], [49.0, -66.25], [49.53, -66.47], [49.68, -66.82], [50.03, -66.97], [50.25, -67.5], [50.03, -68.03], [49.68, -68.18], [49.53, -68.53], [49.0, -68.75], [48.75, -68.65], [48.5, -68.75], [48.25, -68.65], [48.0, -68.75], [47.75, -68.65], [47.5, -68.75], [46.97, -68.53], [46.82, -68.18], [46.75, -68.15], [46.5, -68.25], [46.25, -68.15], [46.0, -68.25], [45.75, -68.15], [45.5, -68.25], [45.25, -68.15], [45.0, -68.25], [44.75, -68.15], [44.5, -68.25], [43.97, -68.03], [43.82, -67.68], [43.75, -67.65], [43.5, -67.75], [43.25, -67.65], [43.0, -67.75], [42.75, -67.65], [42.5, -67.75], [42.25, -67.65], [42.0, -67.75], [41.75, -67.65], [41.5, -67.75], [40.97, -67.53], [40.75, -67.0], [40.96, -66.5], [40.82, -66.18], [40.47, -66.03], [40.25, -65.5]]]]}, "2012-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.25, -65.5], [40.47, -64.97], [41.0, -64.75], [41.25, -64.85], [41.5, -64.75], [41.75, -64.85], [42.0, -64.75], [42.25, -64.85], [42.5, -64.75], [42.75, -64.85], [43.0, -64.75], [43.53, -64.97], [43.68, -65.32], [43.75, -65.35], [44.0, -65.25], [44.25, -65.35], [44.5, -65.25], [44.75, -65.35], [45.0, -65.25], [45.25, -65.35], [45.5, -65.25], [46.03, -65.47], [46.18, -65.82], [46.25, -65.85], [46.5, -65.75], [46.75, -65.85], [47.0, -65.75], [47.25, -65.85], [47.5, -65.75], [47.75, -65.85], [48.0, -65.75], [48.53, -65.97], [48.68, -66.32], [48.75, -66.35], [49.0, -66.25], [49.53, -66.47], [49.68, -66.82], [50.03, -66.97], [50.25, -67.5], [50.03, -68.03], [49.68, -68.18], [49.53, -68.53], [49.0, -68.75], [48.75, -68.65], [48.5, -68.75], [48.25, -68.65], [48.0, -68.75], [47.75, -68.65], [47.5, -68.75], [46.97, -68.53], [46.82, -68.18], [46.75, -68.15], [46.5, -68.25], [46.25, -68.15], [46.0, -68.25], [45.75, -68.15], [45.5, -68.25], [45.25, -68.15], [45.0, -68.25], [44.75, -68.15], [44.5, -68.25], [43.97, -68.03], [43.82, -67.68], [43.75, -67.65], [43.5, -67.75], [43.25, -67.65], [43.0, -67.75], [42.75, -67.65], [42.5, -67.75], [42.25, -67.65], [42.0, -67.75], [41.75, -67.65], [41.5, -67.75], [40.97, -67.53], [40.75, -67.0], [40.96, -66.5], [40.82, -66.18], [40.47, -66.03], [40.25, -65.5]]]]}, "2012-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.97, -67.53], [42.75, -67.0], [42.97, -66.47], [43.5, -66.25], [43.75, -66.35], [44.0, -66.25], [44.25, -66.35], [44.32, -66.32], [44.47, -65.97], [45.0, -65.75], [45.25, -65.85], [45.5, -65.75], [45.75, -65.85], [46.0, -65.75], [46.25, -65.85], [46.5, -65.75], [46.75, -65.85], [47.0, -65.75], [47.25, -65.85], [47.5, -65.75], [48.03, -65.97], [48.2, -66.37], [48.5, -66.25], [49.03, -66.47], [49.25, -67.0], [49.03, -67.53], [48.5, -67.75], [48.0, -67.54], [47.5, -67.75], [47.25, -67.65], [47.0, -67.75], [46.75, -67.65], [46.5, -67.75], [46.25, -67.65], [46.0, -67.75], [45.75, -67.65], [45.5, -67.75], [45.25, -67.65], [45.0, -67.75], [44.75, -67.65], [44.5, -67.75], [44.25, -67.65], [44.0, -67.75], [43.75, -67.65], [43.5, -67.75], [42.97, -67.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.9019659832205775}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.5757242611050435}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-0.03171890027687141, 0.1746845340830987, 0.08813739846004864, 0.18285787876192217]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.1123868439062221, 1.4779712772933067, 1.423494122865975, 0.48109276024871406]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.536273998149867, 1.7071268797706414, 1.6170471610160013, 1.1009311629538807]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.032790959448278, 4.654406088982, 4.9019659832205775, 1.8844587670663486]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7574372185218945, 1.8323512583046375, 1.7612147245835577, 1.553682861485071]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.6860354930843147, 2.355467112653401, 2.4738540807156872, 1.9333959058086925]}}