{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:06:04.552825", "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-Jun-15_to_2025-Jun-19_246.0_46.5"}, "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": 2025060002198}, "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": "June 15 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 19 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": 53628.59506442311}, "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": ["Canada", "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": 46.5}, "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": 246.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "246.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 245.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 248.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 46.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 50.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-115.25, 47.5], [-115.15, 47.75], [-115.25, 48.0], [-115.03, 48.53], [-114.5, 48.75], [-114.25, 48.65], [-114.13, 48.7], [-114.12, 48.7], [-114.25, 49.0], [-114.15, 49.25], [-114.25, 49.5], [-114.15, 49.75], [-114.25, 50.0], [-114.03, 50.53], [-113.5, 50.75], [-112.97, 50.53], [-112.82, 50.18], [-112.47, 50.03], [-112.32, 49.68], [-112.25, 49.65], [-112.0, 49.75], [-111.75, 49.65], [-111.5, 49.75], [-110.97, 49.53], [-110.75, 49.0], [-110.85, 48.75], [-110.75, 48.5], [-110.97, 47.97], [-111.32, 47.82], [-111.35, 47.75], [-111.25, 47.5], [-111.47, 46.97], [-112.0, 46.75], [-112.25, 46.85], [-112.5, 46.75], [-112.8, 46.88], [-112.97, 46.47], [-113.32, 46.32], [-113.35, 46.25], [-113.25, 46.0], [-113.47, 45.47], [-114.0, 45.25], [-114.53, 45.47], [-114.75, 46.0], [-114.65, 46.25], [-114.68, 46.32], [-115.03, 46.47], [-115.25, 47.0], [-115.15, 47.25], [-115.25, 47.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America", "W.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-115.03, 46.47], [-115.25, 47.0], [-115.03, 47.53], [-114.62, 47.7], [-114.75, 48.0], [-114.53, 48.53], [-114.0, 48.75], [-113.47, 48.53], [-113.25, 48.0], [-113.37, 47.7], [-112.97, 47.53], [-112.75, 47.0], [-112.97, 46.47], [-113.32, 46.32], [-113.35, 46.25], [-113.25, 46.0], [-113.47, 45.47], [-114.0, 45.25], [-114.53, 45.47], [-114.75, 46.0], [-114.65, 46.25], [-114.68, 46.32], [-115.03, 46.47]]]]}, "2025-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-115.25, 47.5], [-115.15, 47.75], [-115.25, 48.0], [-115.03, 48.53], [-114.5, 48.75], [-114.25, 48.65], [-114.12, 48.7], [-114.25, 49.0], [-114.03, 49.53], [-113.5, 49.75], [-112.97, 49.53], [-112.75, 49.0], [-112.97, 48.47], [-113.37, 48.3], [-113.25, 48.0], [-113.37, 47.7], [-112.97, 47.53], [-112.75, 47.0], [-112.97, 46.47], [-113.32, 46.32], [-113.35, 46.25], [-113.25, 46.0], [-113.47, 45.47], [-114.0, 45.25], [-114.53, 45.47], [-114.75, 46.0], [-114.65, 46.25], [-114.68, 46.32], [-115.03, 46.47], [-115.25, 47.0], [-115.15, 47.25], [-115.25, 47.5]]]]}, "2025-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-115.25, 47.5], [-115.15, 47.75], [-115.25, 48.0], [-115.03, 48.53], [-114.5, 48.75], [-114.25, 48.65], [-114.12, 48.7], [-114.25, 49.0], [-114.15, 49.25], [-114.25, 49.5], [-114.15, 49.75], [-114.25, 50.0], [-114.03, 50.53], [-113.5, 50.75], [-112.97, 50.53], [-112.82, 50.18], [-112.47, 50.03], [-112.32, 49.68], [-112.25, 49.65], [-112.0, 49.75], [-111.75, 49.65], [-111.5, 49.75], [-110.97, 49.53], [-110.75, 49.0], [-110.85, 48.75], [-110.75, 48.5], [-110.97, 47.97], [-111.32, 47.82], [-111.35, 47.75], [-111.25, 47.5], [-111.47, 46.97], [-112.0, 46.75], [-112.25, 46.85], [-112.5, 46.75], [-112.80000000000001, 46.88], [-112.97, 46.47], [-113.32, 46.32], [-113.35, 46.25], [-113.25, 46.0], [-113.47, 45.47], [-114.0, 45.25], [-114.53, 45.47], [-114.75, 46.0], [-114.65, 46.25], [-114.68, 46.32], [-115.03, 46.47], [-115.25, 47.0], [-115.15, 47.25], [-115.25, 47.5]]]]}, "2025-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-115.25, 48.0], [-115.03, 48.53], [-114.5, 48.75], [-114.25, 48.65], [-114.12, 48.7], [-114.25, 49.0], [-114.15, 49.25], [-114.25, 49.5], [-114.15, 49.75], [-114.25, 50.0], [-114.03, 50.53], [-113.5, 50.75], [-112.97, 50.53], [-112.82, 50.18], [-112.47, 50.03], [-112.32, 49.68], [-112.25, 49.65], [-112.0, 49.75], [-111.75, 49.65], [-111.5, 49.75], [-110.97, 49.53], [-110.75, 49.0], [-110.85, 48.75], [-110.75, 48.5], [-110.97, 47.97], [-111.32, 47.82], [-111.35, 47.75], [-111.25, 47.5], [-111.47, 46.97], [-112.0, 46.75], [-112.25, 46.85], [-112.5, 46.75], [-112.80000000000001, 46.88], [-112.97, 46.47], [-113.32, 46.32], [-113.35, 46.25], [-113.25, 46.0], [-113.47, 45.47], [-114.0, 45.25], [-114.53, 45.47], [-114.75, 46.0], [-114.65, 46.25], [-114.75, 46.5], [-114.65, 46.75], [-114.68, 46.82], [-115.03, 46.97], [-115.25, 47.5], [-115.15, 47.75], [-115.25, 48.0]]]]}, "2025-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-115.03, 47.47], [-115.25, 48.0], [-115.03, 48.53], [-114.5, 48.75], [-114.25, 48.65], [-114.12, 48.7], [-114.25, 49.0], [-114.15, 49.25], [-114.25, 49.5], [-114.15, 49.75], [-114.25, 50.0], [-114.03, 50.53], [-113.5, 50.75], [-112.97, 50.53], [-112.82, 50.18], [-112.47, 50.03], [-112.32, 49.68], [-112.25, 49.65], [-112.0, 49.75], [-111.75, 49.65], [-111.5, 49.75], [-110.97, 49.53], [-110.75, 49.0], [-110.85, 48.75], [-110.75, 48.5], [-110.97, 47.97], [-111.32, 47.82], [-111.35, 47.75], [-111.25, 47.5], [-111.47, 46.97], [-112.0, 46.75], [-112.25, 46.85], [-112.5, 46.75], [-112.80000000000001, 46.88], [-112.97, 46.47], [-113.32, 46.32], [-113.35, 46.25], [-113.25, 46.0], [-113.47, 45.47], [-114.0, 45.25], [-114.53, 45.47], [-114.75, 46.0], [-114.65, 46.25], [-114.75, 46.5], [-114.65, 46.75], [-114.75, 47.0], [-114.65, 47.25], [-114.68, 47.32], [-115.03, 47.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.302977445444014}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.119880679206887}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.132036251492025, 17.288245137532556, 18.27034022013345, 18.29408014933273, 18.942713250054283]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.156097666422568, 19.980627950032556, 20.730952199300134, 20.87142715454104, 21.52965443929037]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.04637828551346, 4.848234542890105, 5.144541265191265, 4.972972776156286, 5.3664370096103395]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.551704089024952, 5.9599325844926625, 6.302977445444014, 5.9659310221517785, 6.016620042479531]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5100541136416006, 1.5109237914156253, 1.727786659502225, 1.6011555500042933, 1.6734745097821746]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6211094862646362, 1.8215067429531882, 2.2184834884740616, 1.7772663865324791, 1.989652072700045]}}