{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:33:58.650722", "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": "2023-Jan-06_to_2023-Jan-12_258.5_28.0"}, "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": 2023010001836}, "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 06 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 12 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 139437.03821490123}, "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": ["Mexico", "United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America", "N.Central-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": []}, "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": 28.0}, "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": 258.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "258.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 257.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 263.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 33.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.03, 28.53], [-101.62, 28.7], [-101.75, 29.0], [-101.53, 29.53], [-101.18, 29.68], [-101.03, 30.03], [-100.5, 30.25], [-100.25, 30.15], [-100.0, 30.25], [-99.47, 30.03], [-99.32, 29.68], [-98.97, 29.53], [-98.75, 29.0], [-98.85, 28.75], [-98.75, 28.5], [-98.85, 28.25], [-98.75, 28.0], [-98.85, 27.75], [-98.75, 27.5], [-98.85, 27.25], [-98.75, 27.0], [-98.97, 26.47], [-99.5, 26.25], [-99.75, 26.35], [-100.0, 26.25], [-100.53, 26.47], [-100.68, 26.82], [-100.75, 26.85], [-101.0, 26.75], [-101.25, 26.85], [-101.5, 26.75], [-102.03, 26.97], [-102.25, 27.5], [-102.15, 27.75], [-102.25, 28.0], [-102.03, 28.53]]]]}, "2023-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.03, 28.53], [-101.62, 28.7], [-101.75, 29.0], [-101.53, 29.53], [-101.18, 29.68], [-101.03, 30.03], [-100.5, 30.25], [-100.25, 30.15], [-100.0, 30.25], [-99.47, 30.03], [-99.32, 29.68], [-98.97, 29.53], [-98.75, 29.0], [-98.85, 28.75], [-98.75, 28.5], [-98.85, 28.25], [-98.75, 28.0], [-98.85, 27.75], [-98.75, 27.5], [-98.85, 27.25], [-98.75, 27.0], [-98.97, 26.47], [-99.5, 26.25], [-99.75, 26.35], [-100.0, 26.25], [-100.53, 26.47], [-100.68, 26.82], [-100.75, 26.85], [-101.0, 26.75], [-101.25, 26.85], [-101.5, 26.75], [-102.03, 26.97], [-102.25, 27.5], [-102.15, 27.75], [-102.25, 28.0], [-102.03, 28.53]]]]}, "2023-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.03, 28.53], [-101.62, 28.7], [-101.75, 29.0], [-101.53, 29.53], [-101.18, 29.68], [-101.03, 30.03], [-100.5, 30.25], [-100.25, 30.15], [-100.0, 30.25], [-99.47, 30.03], [-99.32, 29.68], [-98.97, 29.53], [-98.75, 29.0], [-98.85, 28.75], [-98.75, 28.5], [-98.85, 28.25], [-98.75, 28.0], [-98.85, 27.75], [-98.75, 27.5], [-98.85, 27.25], [-98.75, 27.0], [-98.97, 26.47], [-99.5, 26.25], [-99.75, 26.35], [-100.0, 26.25], [-100.53, 26.47], [-100.68, 26.82], [-100.75, 26.85], [-101.0, 26.75], [-101.25, 26.85], [-101.5, 26.75], [-102.03, 26.97], [-102.25, 27.5], [-102.15, 27.75], [-102.25, 28.0], [-102.03, 28.53]]]]}, "2023-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.5, 28.75], [-100.97, 28.53], [-100.75, 28.0], [-100.97, 27.47], [-101.5, 27.25], [-102.03, 27.47], [-102.25, 28.0], [-102.03, 28.53], [-101.5, 28.75]]]]}, "2023-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.53, 31.03], [-102.0, 31.25], [-101.75, 31.15], [-101.5, 31.25], [-101.25, 31.15], [-101.0, 31.25], [-100.47, 31.03], [-100.3, 30.62], [-100.0, 30.75], [-99.5, 30.54], [-99.12, 30.7], [-99.25, 31.0], [-99.04, 31.5], [-99.25, 32.0], [-99.03, 32.53], [-98.68, 32.68], [-98.65, 32.75], [-98.75, 33.0], [-98.53, 33.53], [-98.18, 33.68], [-98.03, 34.03], [-97.5, 34.25], [-97.25, 34.15], [-97.0, 34.25], [-96.47, 34.03], [-96.25, 33.5], [-96.35, 33.25], [-96.25, 33.0], [-96.35, 32.75], [-96.25, 32.5], [-96.47, 31.97], [-96.82, 31.82], [-96.97, 31.47], [-97.32, 31.32], [-97.35, 31.25], [-97.25, 31.0], [-97.35, 30.75], [-97.25, 30.5], [-97.47, 29.97], [-97.82, 29.82], [-97.97, 29.47], [-98.5, 29.25], [-98.75, 29.35], [-98.82, 29.32], [-98.97, 28.97], [-99.32, 28.82], [-99.35, 28.75], [-99.25, 28.5], [-99.46, 28.0], [-99.25, 27.5], [-99.47, 26.97], [-99.82, 26.82], [-99.97, 26.47], [-100.5, 26.25], [-101.03, 26.47], [-101.18, 26.82], [-101.25, 26.85], [-101.5, 26.75], [-102.03, 26.97], [-102.25, 27.5], [-102.15, 27.75], [-102.25, 28.0], [-102.15, 28.25], [-102.25, 28.5], [-102.15, 28.75], [-102.25, 29.0], [-102.15, 29.25], [-102.18, 29.32], [-102.53, 29.47], [-102.75, 30.0], [-102.65, 30.25], [-102.75, 30.5], [-102.53, 31.03]]]]}, "2023-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.53, 31.03], [-102.0, 31.25], [-101.75, 31.15], [-101.5, 31.25], [-101.25, 31.15], [-101.0, 31.25], [-100.47, 31.03], [-100.3, 30.62], [-100.0, 30.75], [-99.5, 30.54], [-99.12, 30.7], [-99.25, 31.0], [-99.04, 31.5], [-99.25, 32.0], [-99.03, 32.53], [-98.68, 32.68], [-98.65, 32.75], [-98.75, 33.0], [-98.53, 33.53], [-98.18, 33.68], [-98.03, 34.03], [-97.5, 34.25], [-97.25, 34.15], [-97.0, 34.25], [-96.47, 34.03], [-96.25, 33.5], [-96.35, 33.25], [-96.25, 33.0], [-96.35, 32.75], [-96.25, 32.5], [-96.47, 31.97], [-96.82, 31.82], [-96.97, 31.47], [-97.32, 31.32], [-97.35, 31.25], [-97.25, 31.0], [-97.35, 30.75], [-97.25, 30.5], [-97.47, 29.97], [-97.82, 29.82], [-97.97, 29.47], [-98.5, 29.25], [-98.75, 29.35], [-98.82, 29.32], [-98.97, 28.97], [-99.32, 28.82], [-99.35, 28.75], [-99.25, 28.5], [-99.46, 28.0], [-99.25, 27.5], [-99.47, 26.97], [-99.82, 26.82], [-99.97, 26.47], [-100.5, 26.25], [-101.03, 26.47], [-101.18, 26.82], [-101.25, 26.85], [-101.5, 26.75], [-102.03, 26.97], [-102.25, 27.5], [-102.15, 27.75], [-102.25, 28.0], [-102.15, 28.25], [-102.25, 28.5], [-102.15, 28.75], [-102.25, 29.0], [-102.15, 29.25], [-102.18, 29.32], [-102.53, 29.47], [-102.75, 30.0], [-102.65, 30.25], [-102.75, 30.5], [-102.53, 31.03]]]]}, "2023-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.53, 31.03], [-102.0, 31.25], [-101.75, 31.15], [-101.5, 31.25], [-101.25, 31.15], [-101.0, 31.25], [-100.47, 31.03], [-100.3, 30.62], [-100.0, 30.75], [-99.5, 30.54], [-99.12, 30.7], [-99.25, 31.0], [-99.04, 31.5], [-99.25, 32.0], [-99.03, 32.53], [-98.68, 32.68], [-98.65, 32.75], [-98.75, 33.0], [-98.53, 33.53], [-98.18, 33.68], [-98.03, 34.03], [-97.5, 34.25], [-97.25, 34.15], [-97.0, 34.25], [-96.47, 34.03], [-96.25, 33.5], [-96.35, 33.25], [-96.25, 33.0], [-96.35, 32.75], [-96.25, 32.5], [-96.47, 31.97], [-96.82, 31.82], [-96.97, 31.47], [-97.32, 31.32], [-97.35, 31.25], [-97.25, 31.0], [-97.35, 30.75], [-97.25, 30.5], [-97.47, 29.97], [-97.82, 29.82], [-97.97, 29.47], [-98.5, 29.25], [-98.75, 29.35], [-98.82, 29.32], [-98.97, 28.97], [-99.32, 28.82], [-99.35, 28.75], [-99.25, 28.5], [-99.46, 28.0], [-99.25, 27.5], [-99.47, 26.97], [-99.82, 26.82], [-99.97, 26.47], [-100.5, 26.25], [-101.03, 26.47], [-101.18, 26.82], [-101.25, 26.85], [-101.5, 26.75], [-102.03, 26.97], [-102.25, 27.5], [-102.15, 27.75], [-102.25, 28.0], [-102.15, 28.25], [-102.25, 28.5], [-102.15, 28.75], [-102.25, 29.0], [-102.15, 29.25], [-102.18, 29.32], [-102.53, 29.47], [-102.75, 30.0], [-102.65, 30.25], [-102.75, 30.5], [-102.53, 31.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 13.087592341648303}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.57732015514997}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.32728034393233, 20.71949153620909, 19.155388403351935, 16.892954053464507, 17.416432222251217, 19.609623835746163, 16.648420369784787]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.106044370286384, 23.223201872332425, 21.63196376837618, 16.892954053464507, 20.30823128444291, 22.888298919088527, 21.88711081556977]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.483106795900122, 7.935585499350705, 6.485626534568022, 5.04310897481929, 7.394475975419054, 9.578531342650091, 6.627554122779714]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.13999743595258, 9.011381336217767, 7.3348794368399695, 5.04310897481929, 9.70844829386624, 13.087592341648303, 7.8583024740335645]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4322314202644875, 1.735520211791292, 1.4278587823076148, 1.27438435825425, 1.5514532428565933, 2.0417702556109707, 1.4519105682150069]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5014457176879876, 1.9004256617387283, 1.6172454249189168, 1.27438435825425, 1.8003185284534984, 2.465625102620788, 1.6951008251646429]}}