{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:15.029088", "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-Apr-14_to_2012-Apr-17_271.0_29.5"}, "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": 2012040002193}, "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 14 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 17 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": 75366.9321647605}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America", "E.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": ["Gulf of Mexico"]}, "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": 29.5}, "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": 271.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "271.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 269.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 276.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-91.03, 28.47], [-91.25, 29.0], [-91.03, 29.53], [-90.5, 29.75], [-90.25, 29.65], [-90.18, 29.68], [-90.15, 29.75], [-90.25, 30.0], [-90.03, 30.53], [-89.5, 30.75], [-89.25, 30.65], [-89.0, 30.75], [-88.75, 30.65], [-88.5, 30.75], [-87.97, 30.53], [-87.75, 30.0], [-87.97, 29.47], [-88.32, 29.32], [-88.35, 29.25], [-88.25, 29.0], [-88.47, 28.47], [-89.0, 28.25], [-89.25, 28.35], [-89.5, 28.25], [-89.75, 28.35], [-90.0, 28.25], [-90.25, 28.35], [-90.5, 28.25], [-91.03, 28.47]]]]}, "2012-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-91.03, 28.47], [-91.25, 29.0], [-91.03, 29.53], [-90.5, 29.75], [-90.25, 29.65], [-90.18, 29.68], [-90.15, 29.75], [-90.25, 30.0], [-90.03, 30.53], [-89.5, 30.75], [-89.25, 30.65], [-89.0, 30.75], [-88.75, 30.65], [-88.5, 30.75], [-88.25, 30.65], [-88.0, 30.75], [-87.75, 30.65], [-87.5, 30.75], [-87.25, 30.65], [-87.0, 30.75], [-86.75, 30.65], [-86.5, 30.75], [-86.25, 30.65], [-86.0, 30.75], [-85.47, 30.53], [-85.32, 30.18], [-85.25, 30.15], [-85.0, 30.25], [-84.75, 30.15], [-84.5, 30.25], [-84.25, 30.15], [-84.0, 30.25], [-83.47, 30.03], [-83.32, 29.68], [-82.97, 29.53], [-82.75, 29.0], [-82.85, 28.75], [-82.75, 28.5], [-82.97, 27.97], [-83.5, 27.75], [-83.75, 27.85], [-84.0, 27.75], [-84.53, 27.97], [-84.68, 28.32], [-85.03, 28.47], [-85.18, 28.82], [-85.25, 28.85], [-85.5, 28.75], [-85.75, 28.85], [-86.0, 28.75], [-86.25, 28.85], [-86.5, 28.75], [-87.0, 28.96], [-87.5, 28.75], [-87.75, 28.85], [-88.0, 28.75], [-88.25, 28.85], [-88.32, 28.82], [-88.47, 28.47], [-89.0, 28.25], [-89.25, 28.35], [-89.5, 28.25], [-89.75, 28.35], [-90.0, 28.25], [-90.25, 28.35], [-90.5, 28.25], [-91.03, 28.47]]]]}, "2012-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-91.03, 28.47], [-91.25, 29.0], [-91.03, 29.53], [-90.5, 29.75], [-90.25, 29.65], [-90.18, 29.68], [-90.15, 29.75], [-90.25, 30.0], [-90.03, 30.53], [-89.5, 30.75], [-89.25, 30.65], [-89.0, 30.75], [-88.75, 30.65], [-88.5, 30.75], [-88.25, 30.65], [-88.0, 30.75], [-87.75, 30.65], [-87.5, 30.75], [-87.25, 30.65], [-87.0, 30.75], [-86.75, 30.65], [-86.5, 30.75], [-86.25, 30.65], [-86.0, 30.75], [-85.47, 30.53], [-85.32, 30.18], [-85.25, 30.15], [-85.0, 30.25], [-84.75, 30.15], [-84.5, 30.25], [-84.25, 30.15], [-84.0, 30.25], [-83.47, 30.03], [-83.32, 29.68], [-82.97, 29.53], [-82.75, 29.0], [-82.85, 28.75], [-82.75, 28.5], [-82.97, 27.97], [-83.5, 27.75], [-83.75, 27.85], [-84.0, 27.75], [-84.53, 27.97], [-84.68, 28.32], [-85.03, 28.47], [-85.18, 28.82], [-85.25, 28.85], [-85.5, 28.75], [-85.75, 28.85], [-86.0, 28.75], [-86.25, 28.85], [-86.5, 28.75], [-87.0, 28.96], [-87.5, 28.75], [-87.75, 28.85], [-88.0, 28.75], [-88.25, 28.85], [-88.32, 28.82], [-88.47, 28.47], [-89.0, 28.25], [-89.25, 28.35], [-89.5, 28.25], [-89.75, 28.35], [-90.0, 28.25], [-90.25, 28.35], [-90.5, 28.25], [-91.03, 28.47]]]]}, "2012-04-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-88.5, 30.75], [-88.25, 30.65], [-88.0, 30.75], [-87.75, 30.65], [-87.5, 30.75], [-87.25, 30.65], [-87.0, 30.75], [-86.75, 30.65], [-86.5, 30.75], [-86.25, 30.65], [-86.0, 30.75], [-85.47, 30.53], [-85.32, 30.18], [-85.25, 30.15], [-85.0, 30.25], [-84.75, 30.15], [-84.5, 30.25], [-84.25, 30.15], [-84.0, 30.25], [-83.47, 30.03], [-83.32, 29.68], [-82.97, 29.53], [-82.75, 29.0], [-82.85, 28.75], [-82.75, 28.5], [-82.97, 27.97], [-83.5, 27.75], [-83.75, 27.85], [-84.0, 27.75], [-84.53, 27.97], [-84.68, 28.32], [-85.03, 28.47], [-85.18, 28.82], [-85.25, 28.85], [-85.5, 28.75], [-85.75, 28.85], [-86.0, 28.75], [-86.25, 28.85], [-86.5, 28.75], [-87.0, 28.96], [-87.5, 28.75], [-87.75, 28.85], [-88.0, 28.75], [-88.25, 28.85], [-88.5, 28.75], [-88.75, 28.85], [-89.0, 28.75], [-89.53, 28.97], [-89.75, 29.5], [-89.53, 30.03], [-89.18, 30.18], [-89.03, 30.53], [-88.5, 30.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.0847675654389946}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.8404816171339125}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.132103883268712, 23.43933352864633, 23.4605805723383, 22.94657795756342]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.45328923121889, 24.805208731711275, 24.291939394879307, 23.38442956786679]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.435112331120498, 2.9835907819431253, 3.020856769764671, 2.5828988878863663]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.6752363345090657, 4.0847675654389946, 3.5296051687843146, 2.7587408602291816]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.1780585649774566, 1.5188473229462487, 1.4813931685275896, 1.3195315484867907]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.270440049461789, 1.884509901098607, 1.6683155492513213, 1.4184694969597396]}}