{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:01:44.068545", "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-Nov-04_to_2024-Nov-09_245.0_32.0"}, "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": 2024110000111}, "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": "November 04 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 09 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 62370.520399176654}, "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": 32.0}, "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": 245.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "245.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 244.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 247.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 35.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-115.68, 32.68], [-115.65, 32.75], [-115.75, 33.0], [-115.65, 33.25], [-115.75, 33.5], [-115.65, 33.75], [-115.75, 34.0], [-115.53, 34.53], [-115.18, 34.68], [-115.15, 34.75], [-115.25, 35.0], [-115.03, 35.53], [-114.5, 35.75], [-113.97, 35.53], [-113.75, 35.0], [-113.85, 34.75], [-113.75, 34.5], [-113.85, 34.25], [-113.8, 34.13], [-113.5, 34.25], [-112.97, 34.03], [-112.82, 33.68], [-112.47, 33.53], [-112.25, 33.0], [-112.35, 32.75], [-112.25, 32.5], [-112.47, 31.97], [-112.82, 31.82], [-112.85, 31.75], [-112.75, 31.5], [-112.97, 30.97], [-113.5, 30.75], [-113.75, 30.85], [-114.0, 30.75], [-114.5, 30.96], [-115.0, 30.75], [-115.53, 30.97], [-115.68, 31.32], [-116.03, 31.47], [-116.25, 32.0], [-116.03, 32.53], [-115.68, 32.68]]]]}}, "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": {"2024-11-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-113.53, 33.03], [-113.0, 33.25], [-112.47, 33.03], [-112.25, 32.5], [-112.47, 31.97], [-113.0, 31.75], [-113.53, 31.97], [-113.75, 32.5], [-113.53, 33.03]]]]}, "2024-11-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.03, 31.47], [-116.25, 32.0], [-116.03, 32.53], [-115.68, 32.68], [-115.53, 33.03], [-115.0, 33.25], [-114.75, 33.15], [-114.5, 33.25], [-114.25, 33.15], [-114.0, 33.25], [-113.75, 33.15], [-113.5, 33.25], [-113.25, 33.15], [-113.0, 33.25], [-112.47, 33.03], [-112.25, 32.5], [-112.47, 31.97], [-113.0, 31.75], [-113.25, 31.85], [-113.5, 31.75], [-113.75, 31.85], [-113.82, 31.82], [-113.97, 31.47], [-114.32, 31.32], [-114.47, 30.97], [-115.0, 30.75], [-115.53, 30.97], [-115.68, 31.32], [-116.03, 31.47]]]]}, "2024-11-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.03, 31.47], [-116.25, 32.0], [-116.03, 32.53], [-115.68, 32.68], [-115.53, 33.03], [-115.0, 33.25], [-114.75, 33.15], [-114.5, 33.25], [-114.25, 33.15], [-114.0, 33.25], [-113.75, 33.15], [-113.5, 33.25], [-113.25, 33.15], [-113.0, 33.25], [-112.47, 33.03], [-112.25, 32.5], [-112.47, 31.97], [-113.0, 31.75], [-113.25, 31.85], [-113.5, 31.75], [-113.75, 31.85], [-113.82, 31.82], [-113.97, 31.47], [-114.32, 31.32], [-114.47, 30.97], [-115.0, 30.75], [-115.53, 30.97], [-115.68, 31.32], [-116.03, 31.47]]]]}, "2024-11-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.03, 31.47], [-116.25, 32.0], [-116.03, 32.53], [-115.68, 32.68], [-115.65, 32.75], [-115.75, 33.0], [-115.65, 33.25], [-115.75, 33.5], [-115.65, 33.75], [-115.75, 34.0], [-115.53, 34.53], [-115.18, 34.68], [-115.15, 34.75], [-115.25, 35.0], [-115.03, 35.53], [-114.5, 35.75], [-113.97, 35.53], [-113.75, 35.0], [-113.85, 34.75], [-113.75, 34.5], [-113.85, 34.25], [-113.80000000000001, 34.13], [-113.5, 34.25], [-112.97, 34.03], [-112.82, 33.68], [-112.47, 33.53], [-112.25, 33.0], [-112.35, 32.75], [-112.25, 32.5], [-112.47, 31.97], [-112.82, 31.82], [-112.85, 31.75], [-112.75, 31.5], [-112.97, 30.97], [-113.5, 30.75], [-113.75, 30.85], [-114.0, 30.75], [-114.5, 30.96], [-115.0, 30.75], [-115.53, 30.97], [-115.68, 31.32], [-116.03, 31.47]]]]}, "2024-11-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.03, 31.47], [-116.25, 32.0], [-116.03, 32.53], [-115.68, 32.68], [-115.65, 32.75], [-115.75, 33.0], [-115.65, 33.25], [-115.75, 33.5], [-115.65, 33.75], [-115.75, 34.0], [-115.53, 34.53], [-115.18, 34.68], [-115.15, 34.75], [-115.25, 35.0], [-115.03, 35.53], [-114.5, 35.75], [-113.97, 35.53], [-113.75, 35.0], [-113.85, 34.75], [-113.75, 34.5], [-113.85, 34.25], [-113.80000000000001, 34.13], [-113.5, 34.25], [-112.97, 34.03], [-112.82, 33.68], [-112.47, 33.53], [-112.25, 33.0], [-112.35, 32.75], [-112.25, 32.5], [-112.47, 31.97], [-112.82, 31.82], [-112.85, 31.75], [-112.75, 31.5], [-112.97, 30.97], [-113.5, 30.75], [-113.75, 30.85], [-114.0, 30.75], [-114.5, 30.96], [-115.0, 30.75], [-115.53, 30.97], [-115.68, 31.32], [-116.03, 31.47]]]]}, "2024-11-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.03, 31.47], [-116.25, 32.0], [-116.03, 32.53], [-115.68, 32.68], [-115.65, 32.75], [-115.75, 33.0], [-115.65, 33.25], [-115.75, 33.5], [-115.65, 33.75], [-115.75, 34.0], [-115.53, 34.53], [-115.18, 34.68], [-115.15, 34.75], [-115.25, 35.0], [-115.03, 35.53], [-114.5, 35.75], [-113.97, 35.53], [-113.75, 35.0], [-113.85, 34.75], [-113.75, 34.5], [-113.85, 34.25], [-113.80000000000001, 34.13], [-113.5, 34.25], [-112.97, 34.03], [-112.82, 33.68], [-112.47, 33.53], [-112.25, 33.0], [-112.47, 32.47], [-112.87, 32.3], [-112.75, 32.0], [-112.85, 31.75], [-112.75, 31.5], [-112.97, 30.97], [-113.5, 30.75], [-113.75, 30.85], [-114.0, 30.75], [-114.5, 30.96], [-115.0, 30.75], [-115.53, 30.97], [-115.68, 31.32], [-116.03, 31.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.14651758058335}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.298440550530473}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.837253824869833, 16.08258534184216, 16.75880259761101, 14.690184953477626, 13.705510287814661, 14.545226396833186]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.837253824869833, 15.471700286865257, 15.912005360921228, 12.10830968221029, 10.520285542805993, 11.466345723470056]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.1013424900274345, -4.852873063027118, -3.99434151485112, -5.412482324462637, -6.136057071579688, -4.97007377384449]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.1013424900274345, -5.399967798492469, -4.6406144028717335, -7.14651758058335, -6.9810717501015915, -5.546940748992995]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5680193874357233, -1.7406636673977967, -1.4390181085740088, -1.9028609094735371, -2.1196799942115048, -1.7063565127391194]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5680193874357233, -2.065880934421346, -1.5435710587757336, -2.2656846315804757, -2.4552953916033196, -2.0461683172297884]}}