{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:44.744768", "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-Nov-11_to_2025-Nov-15_270.0_17.0"}, "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": 2025110000348}, "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 11 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 15 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": "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": 156288.21822366974}, "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": ["Belize", "Guatemala", "Mexico"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": ["Caribbean Sea"]}, "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": 17.0}, "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": 270.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "270.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 267.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 272.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-88.75, 15.35], [-88.82, 15.32], [-88.97, 14.97], [-89.5, 14.75], [-90.03, 14.97], [-90.18, 15.32], [-90.25, 15.35], [-90.5, 15.25], [-90.75, 15.35], [-91.0, 15.25], [-91.53, 15.47], [-91.68, 15.82], [-92.03, 15.97], [-92.18, 16.32], [-92.25, 16.35], [-92.5, 16.25], [-93.03, 16.47], [-93.18, 16.82], [-93.53, 16.97], [-93.75, 17.5], [-93.53, 18.03], [-93.0, 18.25], [-92.75, 18.15], [-92.5, 18.25], [-92.25, 18.15], [-92.0, 18.25], [-91.75, 18.15], [-91.68, 18.18], [-91.65, 18.25], [-91.75, 18.5], [-91.65, 18.75], [-91.75, 19.0], [-91.53, 19.53], [-91.18, 19.68], [-91.03, 20.03], [-90.68, 20.18], [-90.65, 20.25], [-90.75, 20.5], [-90.53, 21.03], [-90.0, 21.25], [-89.47, 21.03], [-89.25, 20.5], [-89.35, 20.25], [-89.25, 20.0], [-89.35, 19.75], [-89.32, 19.68], [-88.97, 19.53], [-88.75, 19.0], [-88.85, 18.75], [-88.82, 18.68], [-88.75, 18.65], [-88.5, 18.75], [-87.97, 18.53], [-87.75, 18.0], [-87.85, 17.75], [-87.82, 17.68], [-87.47, 17.53], [-87.25, 17.0], [-87.35, 16.75], [-87.25, 16.5], [-87.35, 16.25], [-87.25, 16.0], [-87.47, 15.47], [-88.0, 15.25], [-88.25, 15.35], [-88.5, 15.25], [-88.75, 15.35]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Central-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-11-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-93.52999999999997, 16.97], [-93.75, 17.5], [-93.52999999999997, 18.03], [-93.0, 18.25], [-92.75, 18.15], [-92.5, 18.25], [-92.25, 18.15], [-92.0, 18.25], [-91.75, 18.15], [-91.68, 18.18], [-91.64999999999998, 18.25], [-91.75, 18.5], [-91.64999999999998, 18.75], [-91.75, 19.0], [-91.52999999999997, 19.53], [-91.18, 19.68], [-91.02999999999997, 20.03], [-90.68, 20.18], [-90.64999999999998, 20.25], [-90.75, 20.5], [-90.52999999999997, 21.03], [-90.0, 21.25], [-89.47000000000003, 21.03], [-89.25, 20.5], [-89.35000000000002, 20.25], [-89.25, 20.0], [-89.35000000000002, 19.75], [-89.32, 19.68], [-88.97000000000003, 19.53], [-88.75, 19.0], [-88.85000000000002, 18.75], [-88.82, 18.68], [-88.75, 18.65], [-88.5, 18.75], [-87.97000000000003, 18.53], [-87.75, 18.0], [-87.85000000000002, 17.75], [-87.82, 17.68], [-87.47000000000003, 17.53], [-87.25, 17.0], [-87.47000000000003, 16.47], [-87.82, 16.32], [-87.97000000000003, 15.97], [-88.32, 15.82], [-88.47000000000003, 15.47], [-88.82, 15.32], [-88.97000000000003, 14.97], [-89.5, 14.75], [-90.02999999999997, 14.97], [-90.18, 15.32], [-90.25, 15.35], [-90.5, 15.25], [-90.75, 15.35], [-91.0, 15.25], [-91.52999999999997, 15.47], [-91.68, 15.82], [-92.02999999999997, 15.97], [-92.18, 16.32], [-92.25, 16.35], [-92.5, 16.25], [-93.02999999999997, 16.47], [-93.18, 16.82], [-93.52999999999997, 16.97]]]]}, "2025-11-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-93.52999999999997, 16.97], [-93.75, 17.5], [-93.52999999999997, 18.03], [-93.0, 18.25], [-92.75, 18.15], [-92.5, 18.25], [-92.25, 18.15], [-92.0, 18.25], [-91.75, 18.15], [-91.68, 18.18], [-91.64999999999998, 18.25], [-91.75, 18.5], [-91.64999999999998, 18.75], [-91.75, 19.0], [-91.52999999999997, 19.53], [-91.18, 19.68], [-91.02999999999997, 20.03], [-90.68, 20.18], [-90.64999999999998, 20.25], [-90.75, 20.5], [-90.52999999999997, 21.03], [-90.0, 21.25], [-89.47000000000003, 21.03], [-89.25, 20.5], [-89.35000000000002, 20.25], [-89.25, 20.0], [-89.35000000000002, 19.75], [-89.32, 19.68], [-88.97000000000003, 19.53], [-88.75, 19.0], [-88.85000000000002, 18.75], [-88.82, 18.68], [-88.75, 18.65], [-88.5, 18.75], [-87.97000000000003, 18.53], [-87.75, 18.0], [-87.85000000000002, 17.75], [-87.82, 17.68], [-87.47000000000003, 17.53], [-87.25, 17.0], [-87.35000000000002, 16.75], [-87.25, 16.5], [-87.35000000000002, 16.25], [-87.25, 16.0], [-87.47000000000003, 15.47], [-88.0, 15.25], [-88.25, 15.35], [-88.5, 15.25], [-88.75, 15.35], [-88.82, 15.32], [-88.97000000000003, 14.97], [-89.5, 14.75], [-90.02999999999997, 14.97], [-90.18, 15.32], [-90.25, 15.35], [-90.5, 15.25], [-90.75, 15.35], [-91.0, 15.25], [-91.52999999999997, 15.47], [-91.68, 15.82], [-92.02999999999997, 15.97], [-92.18, 16.32], [-92.25, 16.35], [-92.5, 16.25], [-93.02999999999997, 16.47], [-93.18, 16.82], [-93.52999999999997, 16.97]]]]}, "2025-11-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-93.52999999999997, 16.97], [-93.75, 17.5], [-93.52999999999997, 18.03], [-93.0, 18.25], [-92.75, 18.15], [-92.5, 18.25], [-92.25, 18.15], [-92.0, 18.25], [-91.75, 18.15], [-91.68, 18.18], [-91.64999999999998, 18.25], [-91.75, 18.5], [-91.64999999999998, 18.75], [-91.75, 19.0], [-91.52999999999997, 19.53], [-91.18, 19.68], [-91.02999999999997, 20.03], [-90.68, 20.18], [-90.64999999999998, 20.25], [-90.75, 20.5], [-90.52999999999997, 21.03], [-90.0, 21.25], [-89.47000000000003, 21.03], [-89.25, 20.5], [-89.35000000000002, 20.25], [-89.25, 20.0], [-89.35000000000002, 19.75], [-89.32, 19.68], [-88.97000000000003, 19.53], [-88.75, 19.0], [-88.85000000000002, 18.75], [-88.82, 18.68], [-88.75, 18.65], [-88.5, 18.75], [-87.97000000000003, 18.53], [-87.75, 18.0], [-87.85000000000002, 17.75], [-87.82, 17.68], [-87.47000000000003, 17.53], [-87.25, 17.0], [-87.35000000000002, 16.75], [-87.25, 16.5], [-87.35000000000002, 16.25], [-87.25, 16.0], [-87.47000000000003, 15.47], [-88.0, 15.25], [-88.25, 15.35], [-88.5, 15.25], [-88.75, 15.35], [-88.82, 15.32], [-88.97000000000003, 14.97], [-89.5, 14.75], [-90.02999999999997, 14.97], [-90.18, 15.32], [-90.25, 15.35], [-90.5, 15.25], [-90.75, 15.35], [-91.0, 15.25], [-91.52999999999997, 15.47], [-91.68, 15.82], [-92.02999999999997, 15.97], [-92.18, 16.32], [-92.25, 16.35], [-92.5, 16.25], [-93.02999999999997, 16.47], [-93.18, 16.82], [-93.52999999999997, 16.97]]]]}, "2025-11-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-91.75, 17.5], [-91.64999999999998, 17.75], [-91.75, 18.0], [-91.52999999999997, 18.53], [-91.0, 18.75], [-90.75, 18.65], [-90.5, 18.75], [-90.25, 18.65], [-90.0, 18.75], [-89.75, 18.65], [-89.5, 18.75], [-88.97000000000003, 18.53], [-88.82, 18.18], [-88.75, 18.15], [-88.5, 18.25], [-87.97000000000003, 18.03], [-87.75, 17.5], [-87.85000000000002, 17.25], [-87.82, 17.18], [-87.47000000000003, 17.03], [-87.25, 16.5], [-87.35000000000002, 16.25], [-87.25, 16.0], [-87.47000000000003, 15.47], [-88.0, 15.25], [-88.25, 15.35], [-88.5, 15.25], [-88.75, 15.35], [-89.0, 15.25], [-89.25, 15.35], [-89.5, 15.25], [-89.75, 15.35], [-90.0, 15.25], [-90.25, 15.35], [-90.5, 15.25], [-91.02999999999997, 15.47], [-91.25, 16.0], [-91.14999999999998, 16.25], [-91.18, 16.32], [-91.52999999999997, 16.47], [-91.75, 17.0], [-91.64999999999998, 17.25], [-91.75, 17.5]]]]}, "2025-11-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-89.02999999999997, 16.53], [-88.5, 16.75], [-87.97000000000003, 16.53], [-87.75, 16.0], [-87.97000000000003, 15.47], [-88.5, 15.25], [-89.02999999999997, 15.47], [-89.25, 16.0], [-89.02999999999997, 16.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.421425580574521}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.9989168723902724}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.122950388590482, 20.66076987884327, 21.04932532160541, 21.555742790585498, 24.16698354085287]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.911583201090536, 14.055794016520224, 14.614549255371116, 18.82517522176107, 24.16698354085287]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.828898871131247, -3.3680388780762596, -2.986008000572342, -2.694677479021757, -1.1392238546530393]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.6594496440291664, -4.405645101565256, -4.421425580574521, -4.104869208452158, -1.1392238546530393]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7502928304039762, -2.1140273697237766, -1.9224595265632312, -1.891798216079325, -1.1582153192727966]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2953739713107724, -2.7766983673762327, -2.703452047747892, -2.7276798959962587, -1.1582153192727966]}}