{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:05:18.042201", "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": "2025-May-09_to_2025-May-13_246.5_27.0"}, "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": 2025050001543}, "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": "May 09 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 13 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 312208.253407183}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": 27.0}, "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": 246.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "246.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 244.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 251.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 34.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-113.5, 26.25], [-113.75, 26.35], [-114.0, 26.25], [-114.53, 26.47], [-114.68, 26.82], [-115.03, 26.97], [-115.25, 27.5], [-115.03, 28.03], [-114.68, 28.18], [-114.65, 28.25], [-114.68, 28.32], [-115.03, 28.47], [-115.18, 28.82], [-115.53, 28.97], [-115.68, 29.32], [-116.03, 29.47], [-116.25, 30.0], [-116.15, 30.25], [-116.18, 30.32], [-116.53, 30.47], [-116.75, 31.0], [-116.65, 31.25], [-116.75, 31.5], [-116.53, 32.03], [-116.18, 32.18], [-116.04, 32.5], [-116.25, 33.0], [-116.03, 33.53], [-115.5, 33.75], [-115.25, 33.65], [-115.18, 33.68], [-115.03, 34.03], [-114.5, 34.25], [-114.0, 34.04], [-113.5, 34.25], [-113.25, 34.15], [-113.0, 34.25], [-112.75, 34.15], [-112.68, 34.18], [-112.53, 34.53], [-112.0, 34.75], [-111.47, 34.53], [-111.25, 34.0], [-111.35, 33.75], [-111.32, 33.68], [-110.97, 33.53], [-110.75, 33.0], [-110.85, 32.75], [-110.82, 32.68], [-110.47, 32.53], [-110.25, 32.0], [-110.35, 31.75], [-110.25, 31.5], [-110.35, 31.25], [-110.32, 31.18], [-109.97, 31.03], [-109.75, 30.5], [-109.85, 30.25], [-109.82, 30.18], [-109.47, 30.03], [-109.3, 29.63], [-109.0, 29.75], [-108.47, 29.53], [-108.32, 29.18], [-107.97, 29.03], [-107.75, 28.5], [-107.97, 27.97], [-108.32, 27.82], [-108.47, 27.47], [-108.87, 27.3], [-108.82, 27.18], [-108.47, 27.03], [-108.25, 26.5], [-108.47, 25.97], [-109.0, 25.75], [-109.53, 25.97], [-109.68, 26.32], [-110.03, 26.47], [-110.18, 26.82], [-110.25, 26.85], [-110.5, 26.75], [-110.93, 26.93], [-110.75, 26.5], [-110.85, 26.25], [-110.75, 26.0], [-110.97, 25.47], [-111.5, 25.25], [-111.75, 25.35], [-112.0, 25.25], [-112.53, 25.47], [-112.75, 26.0], [-112.62, 26.3], [-112.75, 26.35], [-113.0, 26.25], [-113.25, 26.35], [-113.5, 26.25]], [[-111.47, 27.53], [-111.32, 27.18], [-111.07, 27.07], [-111.25, 27.5], [-111.15, 27.75], [-111.18, 27.82], [-111.25, 27.85], [-111.5, 27.75], [-111.93, 27.93], [-111.82, 27.68], [-111.47, 27.53]], [[-112.25, 28.5], [-112.35, 28.25], [-112.32, 28.18], [-112.07, 28.07], [-112.25, 28.5]], [[-112.15, 28.75], [-112.2, 28.88], [-112.37, 28.8], [-112.25, 28.5], [-112.15, 28.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.North-America", "N.Central-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-111.0, 30.75], [-110.47, 30.53], [-110.25, 30.0], [-110.35, 29.75], [-110.25, 29.5], [-110.37, 29.2], [-109.97, 29.03], [-109.75, 28.5], [-109.97, 27.97], [-110.5, 27.75], [-111.03, 27.97], [-111.25, 28.5], [-111.12, 28.8], [-111.25, 28.85], [-111.5, 28.75], [-112.03, 28.97], [-112.25, 29.5], [-112.03, 30.03], [-111.68, 30.18], [-111.53, 30.53], [-111.0, 30.75]]], [[[-116.53, 32.03], [-116.0, 32.25], [-115.69999999999999, 32.13], [-115.65, 32.25], [-115.68, 32.32], [-116.03, 32.47], [-116.25, 33.0], [-116.03, 33.53], [-115.5, 33.75], [-115.25, 33.65], [-115.0, 33.75], [-114.75, 33.65], [-114.5, 33.75], [-114.0, 33.54], [-113.5, 33.75], [-112.97, 33.53], [-112.82, 33.18], [-112.47, 33.03], [-112.25, 32.5], [-112.35, 32.25], [-112.32, 32.18], [-111.97, 32.03], [-111.75, 31.5], [-111.97, 30.97], [-112.32, 30.82], [-112.47, 30.47], [-113.0, 30.25], [-113.5, 30.46], [-113.82, 30.32], [-113.96000000000001, 30.0], [-113.82, 29.68], [-113.47, 29.53], [-113.25, 29.0], [-113.35, 28.75], [-113.32, 28.68], [-112.97, 28.53], [-112.82, 28.18], [-112.47, 28.03], [-112.25, 27.5], [-112.35, 27.25], [-112.25, 27.0], [-112.43, 26.57], [-112.0, 26.75], [-111.47, 26.53], [-111.25, 26.0], [-111.47, 25.47], [-112.0, 25.25], [-112.53, 25.47], [-112.75, 26.0], [-112.57, 26.43], [-113.0, 26.25], [-113.25, 26.35], [-113.5, 26.25], [-113.75, 26.35], [-114.0, 26.25], [-114.53, 26.47], [-114.75, 27.0], [-114.53, 27.53], [-114.12, 27.7], [-114.18, 27.82], [-114.53, 27.97], [-114.68, 28.32], [-115.03, 28.47], [-115.18, 28.82], [-115.53, 28.97], [-115.68, 29.32], [-116.03, 29.47], [-116.25, 30.0], [-116.15, 30.25], [-116.18, 30.32], [-116.53, 30.47], [-116.75, 31.0], [-116.65, 31.25], [-116.75, 31.5], [-116.53, 32.03]]]]}, "2025-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.75, 31.5], [-116.53, 32.03], [-116.18, 32.18], [-116.03999999999999, 32.5], [-116.25, 33.0], [-116.03, 33.53], [-115.5, 33.75], [-115.25, 33.65], [-115.18, 33.68], [-115.03, 34.03], [-114.5, 34.25], [-114.0, 34.04], [-113.5, 34.25], [-113.25, 34.15], [-113.0, 34.25], [-112.75, 34.15], [-112.68, 34.18], [-112.53, 34.53], [-112.0, 34.75], [-111.47, 34.53], [-111.25, 34.0], [-111.35, 33.75], [-111.32, 33.68], [-110.97, 33.53], [-110.75, 33.0], [-110.85, 32.75], [-110.82, 32.68], [-110.47, 32.53], [-110.25, 32.0], [-110.35, 31.75], [-110.25, 31.5], [-110.35, 31.25], [-110.32, 31.18], [-109.97, 31.03], [-109.75, 30.5], [-109.85, 30.25], [-109.82, 30.18], [-109.47, 30.03], [-109.30000000000001, 29.63], [-109.0, 29.75], [-108.47, 29.53], [-108.32, 29.18], [-107.97, 29.03], [-107.75, 28.5], [-107.97, 27.97], [-108.32, 27.82], [-108.47, 27.47], [-108.87, 27.3], [-108.82, 27.18], [-108.47, 27.03], [-108.25, 26.5], [-108.47, 25.97], [-109.0, 25.75], [-109.53, 25.97], [-109.68, 26.32], [-110.03, 26.47], [-110.18, 26.82], [-110.25, 26.85], [-110.5, 26.75], [-110.93, 26.93], [-110.75, 26.5], [-110.85, 26.25], [-110.75, 26.0], [-110.97, 25.47], [-111.5, 25.25], [-111.75, 25.35], [-112.0, 25.25], [-112.53, 25.47], [-112.75, 26.0], [-112.62, 26.3], [-112.75, 26.35], [-113.0, 26.25], [-113.25, 26.35], [-113.5, 26.25], [-113.75, 26.35], [-114.0, 26.25], [-114.53, 26.47], [-114.68, 26.82], [-115.03, 26.97], [-115.25, 27.5], [-115.03, 28.03], [-114.68, 28.18], [-114.65, 28.25], [-114.68, 28.32], [-115.03, 28.47], [-115.18, 28.82], [-115.53, 28.97], [-115.68, 29.32], [-116.03, 29.47], [-116.25, 30.0], [-116.15, 30.25], [-116.18, 30.32], [-116.53, 30.47], [-116.75, 31.0], [-116.65, 31.25], [-116.75, 31.5]], [[-112.25, 28.5], [-112.35, 28.25], [-112.32, 28.18], [-112.07, 28.07], [-112.25, 28.5]], [[-112.15, 28.75], [-112.19999999999999, 28.88], [-112.37, 28.8], [-112.25, 28.5], [-112.15, 28.75]], [[-111.07, 27.07], [-111.25, 27.5], [-111.15, 27.75], [-111.18, 27.82], [-111.25, 27.85], [-111.5, 27.75], [-111.93, 27.93], [-111.82, 27.68], [-111.47, 27.53], [-111.32, 27.18], [-111.07, 27.07]], [[-113.75, 30.15], [-113.68, 30.18], [-113.65, 30.25], [-113.69999999999999, 30.38], [-113.82, 30.32], [-113.85, 30.25], [-113.82, 30.18], [-113.75, 30.15]]]]}, "2025-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.75, 31.5], [-116.53, 32.03], [-116.18, 32.18], [-116.03999999999999, 32.5], [-116.25, 33.0], [-116.03, 33.53], [-115.5, 33.75], [-115.25, 33.65], [-115.18, 33.68], [-115.03, 34.03], [-114.5, 34.25], [-114.0, 34.04], [-113.5, 34.25], [-113.25, 34.15], [-113.0, 34.25], [-112.75, 34.15], [-112.68, 34.18], [-112.53, 34.53], [-112.0, 34.75], [-111.47, 34.53], [-111.25, 34.0], [-111.35, 33.75], [-111.32, 33.68], [-110.97, 33.53], [-110.75, 33.0], [-110.85, 32.75], [-110.82, 32.68], [-110.47, 32.53], [-110.25, 32.0], [-110.35, 31.75], [-110.25, 31.5], [-110.35, 31.25], [-110.32, 31.18], [-109.97, 31.03], [-109.75, 30.5], [-109.85, 30.25], [-109.82, 30.18], [-109.47, 30.03], [-109.30000000000001, 29.63], [-109.0, 29.75], [-108.47, 29.53], [-108.32, 29.18], [-107.97, 29.03], [-107.75, 28.5], [-107.97, 27.97], [-108.32, 27.82], [-108.47, 27.47], [-108.87, 27.3], [-108.82, 27.18], [-108.47, 27.03], [-108.25, 26.5], [-108.47, 25.97], [-109.0, 25.75], [-109.53, 25.97], [-109.68, 26.32], [-110.03, 26.47], [-110.18, 26.82], [-110.25, 26.85], [-110.5, 26.75], [-110.93, 26.93], [-110.75, 26.5], [-110.85, 26.25], [-110.75, 26.0], [-110.97, 25.47], [-111.5, 25.25], [-111.75, 25.35], [-112.0, 25.25], [-112.53, 25.47], [-112.75, 26.0], [-112.62, 26.3], [-112.75, 26.35], [-113.0, 26.25], [-113.25, 26.35], [-113.5, 26.25], [-113.75, 26.35], [-114.0, 26.25], [-114.53, 26.47], [-114.68, 26.82], [-115.03, 26.97], [-115.25, 27.5], [-115.03, 28.03], [-114.68, 28.18], [-114.65, 28.25], [-114.68, 28.32], [-115.03, 28.47], [-115.18, 28.82], [-115.53, 28.97], [-115.68, 29.32], [-116.03, 29.47], [-116.25, 30.0], [-116.15, 30.25], [-116.18, 30.32], [-116.53, 30.47], [-116.75, 31.0], [-116.65, 31.25], [-116.75, 31.5]], [[-112.25, 28.5], [-112.35, 28.25], [-112.32, 28.18], [-112.07, 28.07], [-112.25, 28.5]], [[-112.15, 28.75], [-112.19999999999999, 28.88], [-112.37, 28.8], [-112.25, 28.5], [-112.15, 28.75]], [[-111.07, 27.07], [-111.25, 27.5], [-111.15, 27.75], [-111.18, 27.82], [-111.25, 27.85], [-111.5, 27.75], [-111.93, 27.93], [-111.82, 27.68], [-111.47, 27.53], [-111.32, 27.18], [-111.07, 27.07]]]]}, "2025-05-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.25, 32.0], [-116.03999999999999, 32.5], [-116.25, 33.0], [-116.03, 33.53], [-115.5, 33.75], [-115.25, 33.65], [-115.18, 33.68], [-115.03, 34.03], [-114.5, 34.25], [-114.0, 34.04], [-113.5, 34.25], [-113.25, 34.15], [-113.0, 34.25], [-112.75, 34.15], [-112.68, 34.18], [-112.53, 34.53], [-112.0, 34.75], [-111.47, 34.53], [-111.25, 34.0], [-111.35, 33.75], [-111.32, 33.68], [-110.97, 33.53], [-110.75, 33.0], [-110.85, 32.75], [-110.82, 32.68], [-110.47, 32.53], [-110.25, 32.0], [-110.35, 31.75], [-110.25, 31.5], [-110.35, 31.25], [-110.32, 31.18], [-109.97, 31.03], [-109.75, 30.5], [-109.85, 30.25], [-109.82, 30.18], [-109.47, 30.03], [-109.30000000000001, 29.63], [-109.0, 29.75], [-108.47, 29.53], [-108.32, 29.18], [-107.97, 29.03], [-107.75, 28.5], [-107.97, 27.97], [-108.32, 27.82], [-108.47, 27.47], [-108.87, 27.3], [-108.82, 27.18], [-108.47, 27.03], [-108.25, 26.5], [-108.47, 25.97], [-109.0, 25.75], [-109.53, 25.97], [-109.68, 26.32], [-110.03, 26.47], [-110.18, 26.82], [-110.25, 26.85], [-110.5, 26.75], [-110.93, 26.93], [-110.75, 26.5], [-110.85, 26.25], [-110.75, 26.0], [-110.97, 25.47], [-111.5, 25.25], [-112.03, 25.47], [-112.25, 26.0], [-112.15, 26.25], [-112.18, 26.32], [-112.25, 26.35], [-112.5, 26.25], [-112.75, 26.35], [-113.0, 26.25], [-113.25, 26.35], [-113.5, 26.25], [-113.75, 26.35], [-114.0, 26.25], [-114.53, 26.47], [-114.68, 26.82], [-115.03, 26.97], [-115.25, 27.5], [-115.03, 28.03], [-114.68, 28.18], [-114.65, 28.25], [-114.75, 28.5], [-114.65, 28.75], [-114.75, 29.0], [-114.65, 29.25], [-114.68, 29.32], [-115.03, 29.47], [-115.18, 29.82], [-115.53, 29.97], [-115.69999999999999, 30.38], [-116.0, 30.25], [-116.53, 30.47], [-116.75, 31.0], [-116.53, 31.53], [-116.12, 31.7], [-116.25, 32.0]], [[-112.37, 28.8], [-112.25, 28.5], [-112.15, 28.75], [-112.19999999999999, 28.88], [-112.37, 28.8]], [[-112.35, 28.25], [-112.32, 28.18], [-112.07, 28.07], [-112.25, 28.5], [-112.35, 28.25]], [[-111.65, 29.75], [-111.68, 29.82], [-111.75, 29.85], [-111.82, 29.82], [-111.85, 29.75], [-111.80000000000001, 29.63], [-111.68, 29.68], [-111.65, 29.75]], [[-113.5, 31.54], [-113.18, 31.68], [-113.15, 31.75], [-113.18, 31.82], [-113.25, 31.85], [-113.5, 31.75], [-113.75, 31.85], [-113.82, 31.82], [-113.85, 31.75], [-113.82, 31.68], [-113.5, 31.54]], [[-111.07, 27.07], [-111.25, 27.5], [-111.15, 27.75], [-111.18, 27.82], [-111.25, 27.85], [-111.5, 27.75], [-111.93, 27.93], [-111.82, 27.68], [-111.47, 27.53], [-111.32, 27.18], [-111.07, 27.07]]]]}, "2025-05-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.03, 26.47], [-114.25, 27.0], [-114.03, 27.53], [-113.5, 27.75], [-112.97, 27.53], [-112.75, 27.0], [-112.97, 26.47], [-113.5, 26.25], [-114.03, 26.47]]], [[[-111.47, 27.53], [-111.25, 27.0], [-111.47, 26.47], [-112.0, 26.25], [-112.53, 26.47], [-112.75, 27.0], [-112.53, 27.53], [-112.0, 27.75], [-111.47, 27.53]]], [[[-109.53, 28.47], [-109.75, 29.0], [-109.53, 29.53], [-109.0, 29.75], [-108.47, 29.53], [-108.25, 29.0], [-108.47, 28.47], [-109.0, 28.25], [-109.53, 28.47]]], [[[-114.53, 29.47], [-114.75, 30.0], [-114.53, 30.53], [-114.0, 30.75], [-113.47, 30.53], [-113.25, 30.0], [-113.47, 29.47], [-114.0, 29.25], [-114.53, 29.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 11.807854287016767}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.3011947143645255}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.439604348847297, 29.499595677167576, 29.58554688369452, 28.352833149220714, 25.802370961507165]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.4686052958171, 34.743318176269554, 35.104603068033896, 32.89040018717452, 28.19962844848635]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.664584675428224, 6.014191697618313, 5.900788388581388, 4.165533237764998, 2.76432994159849]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.179244452458363, 10.065238492319338, 11.807854287016767, 6.771562344258371, 3.254439606124265]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6025501645206424, 2.0668209868634246, 2.08241985976743, 1.5466475624956386, 1.3638357350945602]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.4424887282234993, 3.3186161757481334, 3.1848724547968303, 2.490422822280613, 1.4865108098478146]}}