{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:27.808207", "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": "2026-Feb-09_to_2026-Feb-11_266.0_33.5"}, "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": 2026020001575}, "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": "February 09 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 11 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 122448.6626917507}, "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": ["United States"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America"]}, "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": 33.5}, "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": 266.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "266.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 263.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 268.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 30.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 34.75}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-96.18, 31.68], [-96.15, 31.75], [-96.25, 32.0], [-96.03, 32.53], [-95.68, 32.68], [-95.65, 32.75], [-95.75, 33.0], [-95.65, 33.25], [-95.75, 33.5], [-95.65, 33.75], [-95.75, 34.0], [-95.53, 34.53], [-95.18, 34.68], [-95.03, 35.03], [-94.5, 35.25], [-94.25, 35.15], [-94.0, 35.25], [-93.75, 35.15], [-93.5, 35.25], [-92.97, 35.03], [-92.75, 34.5], [-92.85, 34.25], [-92.82, 34.18], [-92.75, 34.15], [-92.5, 34.25], [-91.97, 34.03], [-91.82, 33.68], [-91.75, 33.65], [-91.5, 33.75], [-90.97, 33.53], [-90.75, 33.0], [-90.97, 32.47], [-91.32, 32.32], [-91.47, 31.97], [-91.82, 31.82], [-91.97, 31.47], [-92.5, 31.25], [-92.75, 31.35], [-92.82, 31.32], [-92.97, 30.97], [-93.32, 30.82], [-93.47, 30.47], [-94.0, 30.25], [-94.25, 30.35], [-94.5, 30.25], [-94.75, 30.35], [-94.82, 30.32], [-94.97, 29.97], [-95.5, 29.75], [-95.75, 29.85], [-96.0, 29.75], [-96.53, 29.97], [-96.75, 30.5], [-96.65, 30.75], [-96.75, 31.0], [-96.53, 31.53], [-96.18, 31.68]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-02-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.75, 31.0], [-96.52999999999997, 31.53], [-96.18, 31.68], [-96.14999999999998, 31.75], [-96.25, 32.0], [-96.02999999999997, 32.53], [-95.68, 32.68], [-95.64999999999998, 32.75], [-95.75, 33.0], [-95.64999999999998, 33.25], [-95.75, 33.5], [-95.64999999999998, 33.75], [-95.75, 34.0], [-95.52999999999997, 34.53], [-95.18, 34.68], [-95.02999999999997, 35.03], [-94.5, 35.25], [-94.25, 35.15], [-94.0, 35.25], [-93.75, 35.15], [-93.5, 35.25], [-92.97000000000003, 35.03], [-92.75, 34.5], [-92.85000000000002, 34.25], [-92.82, 34.18], [-92.75, 34.15], [-92.5, 34.25], [-91.97000000000003, 34.03], [-91.82, 33.68], [-91.75, 33.65], [-91.5, 33.75], [-90.97000000000003, 33.53], [-90.75, 33.0], [-90.97000000000003, 32.47], [-91.32, 32.32], [-91.47000000000003, 31.97], [-91.82, 31.82], [-91.97000000000003, 31.47], [-92.5, 31.25], [-92.75, 31.35], [-92.82, 31.32], [-92.97000000000003, 30.97], [-93.32, 30.82], [-93.47000000000003, 30.47], [-94.0, 30.25], [-94.25, 30.35], [-94.5, 30.25], [-94.75, 30.35], [-94.82, 30.32], [-94.97000000000003, 29.97], [-95.5, 29.75], [-95.75, 29.85], [-96.0, 29.75], [-96.52999999999997, 29.97], [-96.75, 30.5], [-96.64999999999998, 30.75], [-96.75, 31.0]]]]}, "2026-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.75, 31.0], [-96.52999999999997, 31.53], [-96.18, 31.68], [-96.14999999999998, 31.75], [-96.25, 32.0], [-96.02999999999997, 32.53], [-95.68, 32.68], [-95.64999999999998, 32.75], [-95.75, 33.0], [-95.64999999999998, 33.25], [-95.75, 33.5], [-95.64999999999998, 33.75], [-95.75, 34.0], [-95.52999999999997, 34.53], [-95.18, 34.68], [-95.02999999999997, 35.03], [-94.5, 35.25], [-94.25, 35.15], [-94.0, 35.25], [-93.75, 35.15], [-93.5, 35.25], [-92.97000000000003, 35.03], [-92.75, 34.5], [-92.85000000000002, 34.25], [-92.82, 34.18], [-92.75, 34.15], [-92.5, 34.25], [-91.97000000000003, 34.03], [-91.82, 33.68], [-91.75, 33.65], [-91.5, 33.75], [-90.97000000000003, 33.53], [-90.75, 33.0], [-90.97000000000003, 32.47], [-91.32, 32.32], [-91.47000000000003, 31.97], [-91.82, 31.82], [-91.97000000000003, 31.47], [-92.5, 31.25], [-92.75, 31.35], [-92.82, 31.32], [-92.97000000000003, 30.97], [-93.32, 30.82], [-93.47000000000003, 30.47], [-94.0, 30.25], [-94.25, 30.35], [-94.5, 30.25], [-94.75, 30.35], [-94.82, 30.32], [-94.97000000000003, 29.97], [-95.5, 29.75], [-95.75, 29.85], [-96.0, 29.75], [-96.52999999999997, 29.97], [-96.75, 30.5], [-96.64999999999998, 30.75], [-96.75, 31.0]]]]}, "2026-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.75, 31.0], [-96.52999999999997, 31.53], [-96.18, 31.68], [-96.14999999999998, 31.75], [-96.25, 32.0], [-96.02999999999997, 32.53], [-95.68, 32.68], [-95.64999999999998, 32.75], [-95.75, 33.0], [-95.64999999999998, 33.25], [-95.75, 33.5], [-95.64999999999998, 33.75], [-95.75, 34.0], [-95.52999999999997, 34.53], [-95.18, 34.68], [-95.02999999999997, 35.03], [-94.5, 35.25], [-94.25, 35.15], [-94.0, 35.25], [-93.75, 35.15], [-93.5, 35.25], [-92.97000000000003, 35.03], [-92.75, 34.5], [-92.85000000000002, 34.25], [-92.82, 34.18], [-92.75, 34.15], [-92.5, 34.25], [-91.97000000000003, 34.03], [-91.82, 33.68], [-91.75, 33.65], [-91.5, 33.75], [-90.97000000000003, 33.53], [-90.75, 33.0], [-90.97000000000003, 32.47], [-91.32, 32.32], [-91.47000000000003, 31.97], [-91.82, 31.82], [-91.97000000000003, 31.47], [-92.5, 31.25], [-92.75, 31.35], [-92.82, 31.32], [-92.97000000000003, 30.97], [-93.32, 30.82], [-93.47000000000003, 30.47], [-94.0, 30.25], [-94.25, 30.35], [-94.5, 30.25], [-94.75, 30.35], [-94.82, 30.32], [-94.97000000000003, 29.97], [-95.5, 29.75], [-95.75, 29.85], [-96.0, 29.75], [-96.52999999999997, 29.97], [-96.75, 30.5], [-96.64999999999998, 30.75], [-96.75, 31.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.285304368728191}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 8.82485065840948}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.56299313484351, 19.468446512425203, 17.477966589961454]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.366279856363974, 20.681776936848962, 19.1397694905599]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [8.234306136724369, 10.149685176085992, 8.090560662418078]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.519442091757298, 12.285304368728191, 8.851019326146627]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.519367046540245, 1.8953258574080512, 1.5520839462411626]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7137845614604619, 2.322057027052187, 1.707813240856823]}}