{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:02:32.273686", "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": "2024-Dec-02_to_2024-Dec-08_251.5_44.0"}, "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": 2024120001072}, "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 02 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 08 2024"}, "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": 127397.77283117728}, "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": 44.0}, "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": 251.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "251.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 247.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 254.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-109.15, 44.25], [-109.25, 44.5], [-109.15, 44.75], [-109.25, 45.0], [-109.15, 45.25], [-109.18, 45.32], [-109.25, 45.35], [-109.5, 45.25], [-109.75, 45.35], [-110.0, 45.25], [-110.53, 45.47], [-110.7, 45.88], [-111.0, 45.75], [-111.25, 45.85], [-111.5, 45.75], [-111.75, 45.85], [-112.0, 45.75], [-112.53, 45.97], [-112.75, 46.5], [-112.62, 46.8], [-113.03, 46.97], [-113.25, 47.5], [-113.03, 48.03], [-112.68, 48.18], [-112.53, 48.53], [-112.0, 48.75], [-111.75, 48.65], [-111.5, 48.75], [-110.97, 48.53], [-110.82, 48.18], [-110.75, 48.15], [-110.5, 48.25], [-110.25, 48.15], [-110.18, 48.18], [-110.03, 48.53], [-109.5, 48.75], [-109.25, 48.65], [-109.0, 48.75], [-108.47, 48.53], [-108.25, 48.0], [-108.35, 47.75], [-108.25, 47.5], [-108.35, 47.25], [-108.32, 47.18], [-108.25, 47.15], [-108.0, 47.25], [-107.47, 47.03], [-107.25, 46.5], [-107.43, 46.07], [-107.0, 46.25], [-106.47, 46.03], [-106.32, 45.68], [-106.25, 45.65], [-106.0, 45.75], [-105.47, 45.53], [-105.32, 45.18], [-104.97, 45.03], [-104.75, 44.5], [-104.85, 44.25], [-104.75, 44.0], [-104.97, 43.47], [-105.5, 43.25], [-105.75, 43.35], [-106.0, 43.25], [-106.25, 43.35], [-106.32, 43.32], [-106.47, 42.97], [-107.0, 42.75], [-107.25, 42.85], [-107.5, 42.75], [-107.75, 42.85], [-108.0, 42.75], [-108.25, 42.85], [-108.32, 42.82], [-108.47, 42.47], [-109.0, 42.25], [-109.25, 42.35], [-109.5, 42.25], [-110.03, 42.47], [-110.25, 43.0], [-110.03, 43.53], [-109.68, 43.68], [-109.53, 44.03], [-109.18, 44.18], [-109.15, 44.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.North-America", "C.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-110.03, 43.53], [-109.5, 43.75], [-108.97, 43.53], [-108.75, 43.0], [-108.97, 42.47], [-109.5, 42.25], [-110.03, 42.47], [-110.25, 43.0], [-110.03, 43.53]]]]}, "2024-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.15, 43.75], [-109.25, 44.0], [-109.03, 44.53], [-108.5, 44.75], [-108.25, 44.65], [-108.0, 44.75], [-107.47, 44.53], [-107.25, 44.0], [-107.35, 43.75], [-107.25, 43.5], [-107.47, 42.97], [-108.0, 42.75], [-108.25, 42.85], [-108.5, 42.75], [-108.80000000000001, 42.88], [-108.97, 42.47], [-109.5, 42.25], [-110.03, 42.47], [-110.25, 43.0], [-110.03, 43.53], [-109.5, 43.75], [-109.19999999999999, 43.63], [-109.15, 43.75]]]]}, "2024-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.15, 43.75], [-109.25, 44.0], [-109.03, 44.53], [-108.5, 44.75], [-108.25, 44.65], [-108.0, 44.75], [-107.47, 44.53], [-107.25, 44.0], [-107.35, 43.75], [-107.25, 43.5], [-107.47, 42.97], [-108.0, 42.75], [-108.25, 42.85], [-108.5, 42.75], [-108.80000000000001, 42.88], [-108.97, 42.47], [-109.5, 42.25], [-110.03, 42.47], [-110.25, 43.0], [-110.03, 43.53], [-109.5, 43.75], [-109.19999999999999, 43.63], [-109.15, 43.75]]]]}, "2024-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.15, 43.75], [-109.25, 44.0], [-109.03999999999999, 44.5], [-109.25, 45.0], [-109.03, 45.53], [-108.5, 45.75], [-107.97, 45.53], [-107.75, 45.0], [-107.87, 44.7], [-107.47, 44.53], [-107.25, 44.0], [-107.35, 43.75], [-107.25, 43.5], [-107.47, 42.97], [-108.0, 42.75], [-108.25, 42.85], [-108.5, 42.75], [-108.80000000000001, 42.88], [-108.97, 42.47], [-109.5, 42.25], [-110.03, 42.47], [-110.25, 43.0], [-110.03, 43.53], [-109.5, 43.75], [-109.19999999999999, 43.63], [-109.15, 43.75]]]]}, "2024-12-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-112.53, 48.53], [-112.0, 48.75], [-111.75, 48.65], [-111.5, 48.75], [-110.97, 48.53], [-110.82, 48.18], [-110.75, 48.15], [-110.5, 48.25], [-110.25, 48.15], [-110.18, 48.18], [-110.03, 48.53], [-109.5, 48.75], [-109.25, 48.65], [-109.0, 48.75], [-108.47, 48.53], [-108.25, 48.0], [-108.35, 47.75], [-108.25, 47.5], [-108.35, 47.25], [-108.32, 47.18], [-108.25, 47.15], [-108.0, 47.25], [-107.47, 47.03], [-107.25, 46.5], [-107.43, 46.07], [-107.0, 46.25], [-106.47, 46.03], [-106.32, 45.68], [-106.25, 45.65], [-106.0, 45.75], [-105.47, 45.53], [-105.32, 45.18], [-104.97, 45.03], [-104.75, 44.5], [-104.85, 44.25], [-104.75, 44.0], [-104.97, 43.47], [-105.5, 43.25], [-105.75, 43.35], [-106.0, 43.25], [-106.25, 43.35], [-106.32, 43.32], [-106.47, 42.97], [-107.0, 42.75], [-107.25, 42.85], [-107.5, 42.75], [-107.75, 42.85], [-108.0, 42.75], [-108.25, 42.85], [-108.32, 42.82], [-108.47, 42.47], [-109.0, 42.25], [-109.25, 42.35], [-109.5, 42.25], [-110.03, 42.47], [-110.25, 43.0], [-110.03, 43.53], [-109.68, 43.68], [-109.53, 44.03], [-109.18, 44.18], [-109.15, 44.25], [-109.25, 44.5], [-109.15, 44.75], [-109.25, 45.0], [-109.15, 45.25], [-109.18, 45.32], [-109.25, 45.35], [-109.5, 45.25], [-109.75, 45.35], [-110.0, 45.25], [-110.53, 45.47], [-110.69999999999999, 45.88], [-111.0, 45.75], [-111.25, 45.85], [-111.5, 45.75], [-111.75, 45.85], [-112.0, 45.75], [-112.53, 45.97], [-112.75, 46.5], [-112.62, 46.8], [-113.03, 46.97], [-113.25, 47.5], [-113.03, 48.03], [-112.68, 48.18], [-112.53, 48.53]]]]}, "2024-12-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-112.53, 48.53], [-112.0, 48.75], [-111.75, 48.65], [-111.5, 48.75], [-110.97, 48.53], [-110.82, 48.18], [-110.75, 48.15], [-110.5, 48.25], [-110.25, 48.15], [-110.18, 48.18], [-110.03, 48.53], [-109.5, 48.75], [-109.25, 48.65], [-109.0, 48.75], [-108.47, 48.53], [-108.25, 48.0], [-108.35, 47.75], [-108.25, 47.5], [-108.35, 47.25], [-108.32, 47.18], [-108.25, 47.15], [-108.0, 47.25], [-107.47, 47.03], [-107.25, 46.5], [-107.43, 46.07], [-107.0, 46.25], [-106.47, 46.03], [-106.32, 45.68], [-106.25, 45.65], [-106.0, 45.75], [-105.47, 45.53], [-105.32, 45.18], [-104.97, 45.03], [-104.75, 44.5], [-104.85, 44.25], [-104.75, 44.0], [-104.97, 43.47], [-105.5, 43.25], [-105.75, 43.35], [-106.0, 43.25], [-106.25, 43.35], [-106.32, 43.32], [-106.47, 42.97], [-107.0, 42.75], [-107.25, 42.85], [-107.5, 42.75], [-108.0, 42.96], [-108.32, 42.82], [-108.47, 42.47], [-109.0, 42.25], [-109.25, 42.35], [-109.5, 42.25], [-110.03, 42.47], [-110.25, 43.0], [-110.03, 43.53], [-109.68, 43.68], [-109.53, 44.03], [-109.18, 44.18], [-109.15, 44.25], [-109.25, 44.5], [-109.15, 44.75], [-109.25, 45.0], [-109.15, 45.25], [-109.18, 45.32], [-109.25, 45.35], [-109.5, 45.25], [-109.75, 45.35], [-110.0, 45.25], [-110.53, 45.47], [-110.69999999999999, 45.88], [-111.0, 45.75], [-111.25, 45.85], [-111.5, 45.75], [-111.75, 45.85], [-112.0, 45.75], [-112.53, 45.97], [-112.75, 46.5], [-112.62, 46.8], [-113.03, 46.97], [-113.25, 47.5], [-113.03, 48.03], [-112.68, 48.18], [-112.53, 48.53]]]]}, "2024-12-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-112.53, 48.53], [-112.0, 48.75], [-111.75, 48.65], [-111.5, 48.75], [-110.97, 48.53], [-110.82, 48.18], [-110.75, 48.15], [-110.5, 48.25], [-110.25, 48.15], [-110.18, 48.18], [-110.03, 48.53], [-109.5, 48.75], [-109.25, 48.65], [-109.0, 48.75], [-108.47, 48.53], [-108.25, 48.0], [-108.35, 47.75], [-108.25, 47.5], [-108.35, 47.25], [-108.32, 47.18], [-108.25, 47.15], [-108.0, 47.25], [-107.47, 47.03], [-107.25, 46.5], [-107.43, 46.07], [-107.0, 46.25], [-106.47, 46.03], [-106.32, 45.68], [-106.25, 45.65], [-106.0, 45.75], [-105.47, 45.53], [-105.32, 45.18], [-104.97, 45.03], [-104.75, 44.5], [-104.85, 44.25], [-104.75, 44.0], [-104.97, 43.47], [-105.5, 43.25], [-105.75, 43.35], [-106.0, 43.25], [-106.25, 43.35], [-106.32, 43.32], [-106.47, 42.97], [-107.0, 42.75], [-107.25, 42.85], [-107.5, 42.75], [-108.0, 42.96], [-108.32, 42.82], [-108.47, 42.47], [-109.0, 42.25], [-109.53, 42.47], [-109.75, 43.0], [-109.65, 43.25], [-109.75, 43.5], [-109.53, 44.03], [-109.18, 44.18], [-109.15, 44.25], [-109.25, 44.5], [-109.15, 44.75], [-109.25, 45.0], [-109.15, 45.25], [-109.18, 45.32], [-109.25, 45.35], [-109.5, 45.25], [-109.75, 45.35], [-110.0, 45.25], [-110.53, 45.47], [-110.69999999999999, 45.88], [-111.0, 45.75], [-111.25, 45.85], [-111.5, 45.75], [-111.75, 45.85], [-112.0, 45.75], [-112.53, 45.97], [-112.75, 46.5], [-112.62, 46.8], [-113.03, 46.97], [-113.25, 47.5], [-113.03, 48.03], [-112.68, 48.18], [-112.53, 48.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 15.709355522405701}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 9.548421402117746}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-3.017184956868448, 1.5413904825846316, 1.9466300964355696, 0.9824534946017707, 3.372683008915999, 6.060822313681456, 5.678532280280592]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-3.017184956868448, 2.8340011596679915, 3.832697804768884, 2.8535336812337277, 7.575341796875023, 12.67637659708663, 9.516617075602255]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.003051058721098, 7.411772480921433, 8.13203686418367, 7.174712132844462, 8.320914721391905, 10.916313759266469, 10.033297379361368]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.003051058721098, 9.279399486231796, 9.652695451634145, 8.229004462975922, 10.43392927496103, 15.709355522405701, 12.198259424700097]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3901896672100817, 1.4583290698612592, 1.5678927257788775, 1.3062515392960592, 1.2657016207506309, 1.6341712834487607, 1.546206873576583]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3901896672100817, 1.7720174113775735, 1.8030278633615098, 1.5931453440374168, 1.6780321069632955, 2.154658432296424, 1.9652463515209042]}}