{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:06:35.216872", "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-Jul-11_to_2025-Jul-18_279.5_37.5"}, "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": 2025070002013}, "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": "July 11 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 18 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 109678.73206221222}, "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": 37.5}, "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": 279.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "279.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 273.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 280.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 34.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-87.0, 34.75], [-86.75, 34.65], [-86.68, 34.68], [-86.65, 34.75], [-86.75, 35.0], [-86.53, 35.53], [-86.18, 35.68], [-86.15, 35.75], [-86.25, 36.0], [-86.03, 36.53], [-85.68, 36.68], [-85.53, 37.03], [-85.0, 37.25], [-84.75, 37.15], [-84.68, 37.18], [-84.53, 37.53], [-84.0, 37.75], [-83.75, 37.65], [-83.68, 37.68], [-83.53, 38.03], [-83.0, 38.25], [-82.75, 38.15], [-82.5, 38.25], [-82.25, 38.15], [-82.0, 38.25], [-81.75, 38.15], [-81.5, 38.25], [-81.25, 38.15], [-81.18, 38.18], [-81.03, 38.53], [-80.5, 38.75], [-80.25, 38.65], [-80.0, 38.75], [-79.75, 38.65], [-79.5, 38.75], [-78.97, 38.53], [-78.75, 38.0], [-78.97, 37.47], [-79.5, 37.25], [-79.75, 37.35], [-79.82, 37.32], [-79.85, 37.25], [-79.75, 37.0], [-79.97, 36.47], [-80.5, 36.25], [-81.0, 36.46], [-81.32, 36.32], [-81.47, 35.97], [-81.82, 35.82], [-81.97, 35.47], [-82.32, 35.32], [-82.47, 34.97], [-83.0, 34.75], [-83.25, 34.85], [-83.5, 34.75], [-83.8, 34.88], [-83.97, 34.47], [-84.32, 34.32], [-84.47, 33.97], [-85.0, 33.75], [-85.25, 33.85], [-85.5, 33.75], [-85.75, 33.85], [-85.82, 33.82], [-85.97, 33.47], [-86.5, 33.25], [-86.75, 33.35], [-87.0, 33.25], [-87.53, 33.47], [-87.75, 34.0], [-87.53, 34.53], [-87.0, 34.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-07-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-81.5, 36.75], [-82.02999999999997, 36.97], [-82.25, 37.5], [-82.02999999999997, 38.03], [-81.5, 38.25], [-81.0, 38.04], [-80.5, 38.25], [-79.97000000000003, 38.03], [-79.75, 37.5], [-79.97000000000003, 36.97], [-80.5, 36.75], [-81.0, 36.96], [-81.5, 36.75]]]]}, "2025-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-81.5, 36.75], [-82.02999999999997, 36.97], [-82.25, 37.5], [-82.02999999999997, 38.03], [-81.5, 38.25], [-81.25, 38.15], [-81.18, 38.18], [-81.02999999999997, 38.53], [-80.5, 38.75], [-80.25, 38.65], [-80.0, 38.75], [-79.75, 38.65], [-79.5, 38.75], [-78.97000000000003, 38.53], [-78.75, 38.0], [-78.97000000000003, 37.47], [-79.5, 37.25], [-79.75, 37.35], [-79.82, 37.32], [-79.85000000000002, 37.25], [-79.75, 37.0], [-79.97000000000003, 36.47], [-80.5, 36.25], [-81.02999999999997, 36.47], [-81.18, 36.82], [-81.25, 36.85], [-81.5, 36.75]]]]}, "2025-07-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-81.5, 36.75], [-82.02999999999997, 36.97], [-82.25, 37.5], [-82.02999999999997, 38.03], [-81.5, 38.25], [-81.25, 38.15], [-81.18, 38.18], [-81.02999999999997, 38.53], [-80.5, 38.75], [-80.25, 38.65], [-80.0, 38.75], [-79.75, 38.65], [-79.5, 38.75], [-78.97000000000003, 38.53], [-78.75, 38.0], [-78.97000000000003, 37.47], [-79.5, 37.25], [-79.75, 37.35], [-79.82, 37.32], [-79.85000000000002, 37.25], [-79.75, 37.0], [-79.97000000000003, 36.47], [-80.5, 36.25], [-81.02999999999997, 36.47], [-81.18, 36.82], [-81.25, 36.85], [-81.5, 36.75]]]]}, "2025-07-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-84.52999999999997, 35.97], [-84.75, 36.5], [-84.52999999999997, 37.03], [-84.0, 37.25], [-83.5, 37.04], [-83.0, 37.25], [-82.75, 37.15], [-82.5, 37.25], [-82.19999999999999, 37.12], [-82.14999999999998, 37.25], [-82.25, 37.5], [-82.02999999999997, 38.03], [-81.5, 38.25], [-81.25, 38.15], [-81.18, 38.18], [-81.02999999999997, 38.53], [-80.5, 38.75], [-80.25, 38.65], [-80.0, 38.75], [-79.75, 38.65], [-79.5, 38.75], [-78.97000000000003, 38.53], [-78.75, 38.0], [-78.97000000000003, 37.47], [-79.5, 37.25], [-79.75, 37.35], [-79.82, 37.32], [-79.85000000000002, 37.25], [-79.75, 37.0], [-79.97000000000003, 36.47], [-80.5, 36.25], [-81.0, 36.46], [-81.5, 36.25], [-81.80000000000001, 36.38], [-81.85000000000002, 36.25], [-81.75, 36.0], [-81.97000000000003, 35.47], [-82.32, 35.32], [-82.47000000000003, 34.97], [-83.0, 34.75], [-83.25, 34.85], [-83.5, 34.75], [-84.02999999999997, 34.97], [-84.25, 35.5], [-84.14999999999998, 35.75], [-84.18, 35.82], [-84.52999999999997, 35.97]]]]}, "2025-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-87.0, 33.25], [-87.52999999999997, 33.47], [-87.75, 34.0], [-87.52999999999997, 34.53], [-87.0, 34.75], [-86.75, 34.65], [-86.68, 34.68], [-86.64999999999998, 34.75], [-86.75, 35.0], [-86.52999999999997, 35.53], [-86.18, 35.68], [-86.14999999999998, 35.75], [-86.25, 36.0], [-86.02999999999997, 36.53], [-85.68, 36.68], [-85.52999999999997, 37.03], [-85.0, 37.25], [-84.75, 37.15], [-84.68, 37.18], [-84.52999999999997, 37.53], [-84.0, 37.75], [-83.75, 37.65], [-83.68, 37.68], [-83.52999999999997, 38.03], [-83.0, 38.25], [-82.75, 38.15], [-82.5, 38.25], [-82.25, 38.15], [-82.0, 38.25], [-81.75, 38.15], [-81.5, 38.25], [-81.25, 38.15], [-81.0, 38.25], [-80.75, 38.15], [-80.5, 38.25], [-79.97000000000003, 38.03], [-79.75, 37.5], [-79.85000000000002, 37.25], [-79.75, 37.0], [-79.97000000000003, 36.47], [-80.5, 36.25], [-81.0, 36.46], [-81.32, 36.32], [-81.47000000000003, 35.97], [-81.82, 35.82], [-81.97000000000003, 35.47], [-82.32, 35.32], [-82.47000000000003, 34.97], [-83.0, 34.75], [-83.25, 34.85], [-83.5, 34.75], [-83.80000000000001, 34.88], [-83.97000000000003, 34.47], [-84.32, 34.32], [-84.47000000000003, 33.97], [-85.0, 33.75], [-85.25, 33.85], [-85.5, 33.75], [-85.75, 33.85], [-85.82, 33.82], [-85.97000000000003, 33.47], [-86.5, 33.25], [-86.75, 33.35], [-87.0, 33.25]]]]}, "2025-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-87.0, 33.25], [-87.52999999999997, 33.47], [-87.75, 34.0], [-87.52999999999997, 34.53], [-87.0, 34.75], [-86.75, 34.65], [-86.68, 34.68], [-86.64999999999998, 34.75], [-86.75, 35.0], [-86.52999999999997, 35.53], [-86.18, 35.68], [-86.14999999999998, 35.75], [-86.25, 36.0], [-86.02999999999997, 36.53], [-85.68, 36.68], [-85.52999999999997, 37.03], [-85.0, 37.25], [-84.75, 37.15], [-84.68, 37.18], [-84.52999999999997, 37.53], [-84.0, 37.75], [-83.75, 37.65], [-83.68, 37.68], [-83.52999999999997, 38.03], [-83.0, 38.25], [-82.75, 38.15], [-82.5, 38.25], [-82.25, 38.15], [-82.0, 38.25], [-81.75, 38.15], [-81.5, 38.25], [-81.25, 38.15], [-81.0, 38.25], [-80.75, 38.15], [-80.5, 38.25], [-79.97000000000003, 38.03], [-79.75, 37.5], [-79.97000000000003, 36.97], [-80.5, 36.75], [-80.75, 36.85], [-80.82, 36.82], [-80.97000000000003, 36.47], [-81.32, 36.32], [-81.47000000000003, 35.97], [-81.82, 35.82], [-81.97000000000003, 35.47], [-82.32, 35.32], [-82.47000000000003, 34.97], [-83.0, 34.75], [-83.25, 34.85], [-83.5, 34.75], [-83.80000000000001, 34.88], [-83.97000000000003, 34.47], [-84.32, 34.32], [-84.47000000000003, 33.97], [-85.0, 33.75], [-85.25, 33.85], [-85.5, 33.75], [-85.75, 33.85], [-85.82, 33.82], [-85.97000000000003, 33.47], [-86.5, 33.25], [-86.75, 33.35], [-87.0, 33.25]]]]}, "2025-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-87.0, 33.25], [-87.52999999999997, 33.47], [-87.75, 34.0], [-87.52999999999997, 34.53], [-87.0, 34.75], [-86.75, 34.65], [-86.68, 34.68], [-86.64999999999998, 34.75], [-86.75, 35.0], [-86.52999999999997, 35.53], [-86.18, 35.68], [-86.14999999999998, 35.75], [-86.25, 36.0], [-86.02999999999997, 36.53], [-85.68, 36.68], [-85.52999999999997, 37.03], [-85.0, 37.25], [-84.75, 37.15], [-84.68, 37.18], [-84.52999999999997, 37.53], [-84.0, 37.75], [-83.75, 37.65], [-83.68, 37.68], [-83.52999999999997, 38.03], [-83.0, 38.25], [-82.75, 38.15], [-82.5, 38.25], [-82.25, 38.15], [-82.0, 38.25], [-81.75, 38.15], [-81.5, 38.25], [-81.25, 38.15], [-81.0, 38.25], [-80.75, 38.15], [-80.5, 38.25], [-79.97000000000003, 38.03], [-79.75, 37.5], [-79.97000000000003, 36.97], [-80.5, 36.75], [-80.75, 36.85], [-80.82, 36.82], [-80.97000000000003, 36.47], [-81.32, 36.32], [-81.47000000000003, 35.97], [-81.82, 35.82], [-81.97000000000003, 35.47], [-82.32, 35.32], [-82.47000000000003, 34.97], [-83.0, 34.75], [-83.25, 34.85], [-83.5, 34.75], [-83.80000000000001, 34.88], [-83.97000000000003, 34.47], [-84.32, 34.32], [-84.47000000000003, 33.97], [-85.0, 33.75], [-85.25, 33.85], [-85.5, 33.75], [-85.75, 33.85], [-85.82, 33.82], [-85.97000000000003, 33.47], [-86.5, 33.25], [-86.75, 33.35], [-87.0, 33.25]]]]}, "2025-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-84.0, 36.75], [-83.75, 36.65], [-83.5, 36.75], [-83.19999999999999, 36.62], [-83.02999999999997, 37.03], [-82.5, 37.25], [-82.25, 37.15], [-82.0, 37.25], [-81.47000000000003, 37.03], [-81.25, 36.5], [-81.47000000000003, 35.97], [-82.0, 35.75], [-82.25, 35.85], [-82.5, 35.75], [-82.80000000000001, 35.88], [-82.97000000000003, 35.47], [-83.5, 35.25], [-83.75, 35.35], [-84.0, 35.25], [-84.30000000000001, 35.38], [-84.47000000000003, 34.97], [-85.0, 34.75], [-85.52999999999997, 34.97], [-85.75, 35.5], [-85.52999999999997, 36.03], [-85.0, 36.25], [-84.69999999999999, 36.12], [-84.52999999999997, 36.53], [-84.0, 36.75]]], [[[-80.5, 36.75], [-81.02999999999997, 36.97], [-81.25, 37.5], [-81.02999999999997, 38.03], [-80.5, 38.25], [-79.97000000000003, 38.03], [-79.75, 37.5], [-79.97000000000003, 36.97], [-80.5, 36.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.433849286370901}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.8469072566784828}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.56864700317385, 24.651895504906065, 24.664077286493182, 24.79588724772134, 26.60865886657217, 26.832124837239633, 27.033191426595067, 26.44397464328341]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.61881790161135, 25.656348164876306, 25.605123138427757, 27.911147054036462, 29.616614278157556, 29.378828938802087, 29.832739766438806, 28.58381296793624]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.615533623762417, 2.952388021689931, 2.98115132603555, 2.598227851389069, 2.786505699110468, 2.9045527203702775, 2.9824591914799115, 2.4322592284189475]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.6311009299287207, 3.7899204956407857, 3.7614686611212846, 4.000679691119842, 4.433849286370901, 4.121079438227866, 4.19561544999101, 3.1031754557002955]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2841791667073181, 1.5059548688334508, 1.5651343107937696, 1.4520136913723665, 1.5939068406195116, 1.6293834695392029, 1.6945167772340661, 1.3619896967552423]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3136345482434177, 1.8911181399802381, 1.9491087197676815, 2.0183334031461513, 2.6212207444642575, 2.171162313008589, 2.4181067418834377, 1.7921807418120732]}}