{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:11.932374", "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": "2026-Feb-11_to_2026-Feb-14_325.0_-7.0"}, "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": 2026020000255}, "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": "February 11 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 14 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 61427.92881415334}, "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": ["Brazil"]}, "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": ["Atlantic Ocean"]}, "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": -7.0}, "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": 325.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "325.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 323.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 326.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -7.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -5.25}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-36.5, -8.25], [-37.03, -8.03], [-37.25, -7.5], [-37.15, -7.25], [-37.25, -7.0], [-37.15, -6.75], [-37.25, -6.5], [-37.15, -6.25], [-37.25, -6.0], [-37.03, -5.47], [-36.5, -5.25], [-36.25, -5.35], [-36.0, -5.25], [-35.75, -5.35], [-35.5, -5.25], [-35.25, -5.35], [-35.0, -5.25], [-34.75, -5.35], [-34.5, -5.25], [-34.25, -5.35], [-34.18, -5.32], [-34.03, -4.97], [-33.5, -4.75], [-32.97, -4.97], [-32.75, -5.5], [-32.85, -5.75], [-32.75, -6.0], [-32.97, -6.53], [-33.32, -6.68], [-33.47, -7.03], [-33.82, -7.18], [-33.97, -7.53], [-34.5, -7.75], [-34.75, -7.65], [-35.0, -7.75], [-35.25, -7.65], [-35.5, -7.75], [-35.75, -7.65], [-35.82, -7.68], [-35.97, -8.03], [-36.5, -8.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America", "Equatorial.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.25, -6.0], [-37.02999999999997, -5.47], [-36.5, -5.25], [-36.25, -5.35], [-36.0, -5.25], [-35.75, -5.35], [-35.5, -5.25], [-35.25, -5.35], [-35.0, -5.25], [-34.75, -5.35], [-34.5, -5.25], [-34.25, -5.35], [-34.18000000000001, -5.32], [-34.02999999999997, -4.97], [-33.5, -4.75], [-32.97000000000003, -4.97], [-32.75, -5.5], [-32.85000000000002, -5.75], [-32.75, -6.0], [-32.97000000000003, -6.53], [-33.31999999999999, -6.68], [-33.47000000000003, -7.03], [-33.81999999999999, -7.18], [-33.97000000000003, -7.53], [-34.5, -7.75], [-34.75, -7.65], [-35.0, -7.75], [-35.25, -7.65], [-35.5, -7.75], [-35.75, -7.65], [-36.0, -7.75], [-36.52999999999997, -7.53], [-36.68000000000001, -7.18], [-37.02999999999997, -7.03], [-37.25, -6.5], [-37.14999999999998, -6.25], [-37.25, -6.0]]]]}, "2026-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.25, -7.0], [-37.14999999999998, -6.75], [-37.25, -6.5], [-37.14999999999998, -6.25], [-37.25, -6.0], [-37.02999999999997, -5.47], [-36.5, -5.25], [-36.25, -5.35], [-36.0, -5.25], [-35.75, -5.35], [-35.5, -5.25], [-35.25, -5.35], [-35.0, -5.25], [-34.75, -5.35], [-34.5, -5.25], [-34.25, -5.35], [-34.18000000000001, -5.32], [-34.02999999999997, -4.97], [-33.5, -4.75], [-32.97000000000003, -4.97], [-32.75, -5.5], [-32.85000000000002, -5.75], [-32.75, -6.0], [-32.97000000000003, -6.53], [-33.31999999999999, -6.68], [-33.47000000000003, -7.03], [-33.81999999999999, -7.18], [-33.97000000000003, -7.53], [-34.5, -7.75], [-34.75, -7.65], [-35.0, -7.75], [-35.25, -7.65], [-35.5, -7.75], [-35.75, -7.65], [-35.81999999999999, -7.68], [-35.97000000000003, -8.03], [-36.5, -8.25], [-37.02999999999997, -8.03], [-37.25, -7.5], [-37.14999999999998, -7.25], [-37.25, -7.0]]]]}, "2026-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.25, -7.0], [-37.14999999999998, -6.75], [-37.25, -6.5], [-37.14999999999998, -6.25], [-37.25, -6.0], [-37.02999999999997, -5.47], [-36.5, -5.25], [-36.25, -5.35], [-36.0, -5.25], [-35.75, -5.35], [-35.5, -5.25], [-35.25, -5.35], [-35.0, -5.25], [-34.75, -5.35], [-34.5, -5.25], [-34.25, -5.35], [-34.18000000000001, -5.32], [-34.02999999999997, -4.97], [-33.5, -4.75], [-32.97000000000003, -4.97], [-32.75, -5.5], [-32.85000000000002, -5.75], [-32.75, -6.0], [-32.97000000000003, -6.53], [-33.31999999999999, -6.68], [-33.47000000000003, -7.03], [-33.81999999999999, -7.18], [-33.97000000000003, -7.53], [-34.5, -7.75], [-34.75, -7.65], [-35.0, -7.75], [-35.25, -7.65], [-35.5, -7.75], [-35.75, -7.65], [-35.81999999999999, -7.68], [-35.97000000000003, -8.03], [-36.5, -8.25], [-37.02999999999997, -8.03], [-37.25, -7.5], [-37.14999999999998, -7.25], [-37.25, -7.0]]]]}, "2026-02-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.25, -7.0], [-37.02999999999997, -6.47], [-36.5, -6.25], [-35.97000000000003, -6.47], [-35.75, -7.0], [-35.85000000000002, -7.25], [-35.75, -7.5], [-35.97000000000003, -8.03], [-36.5, -8.25], [-37.02999999999997, -8.03], [-37.25, -7.5], [-37.14999999999998, -7.25], [-37.25, -7.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.7839425928173114}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5517183785545152}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.23870521827979, 24.74614359537759, 25.23100509643558, 24.585500335693382]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.63008524576827, 22.41858825683596, 23.140030161539755, 24.226979827880882]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.441558952044264, -1.8729223648501943, -1.3329401328357904, -1.5188958113772344]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9160374465754444, -2.7839425928173114, -1.8814557889249954, -1.6160729290280642]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.2117055618050405, -2.6030310114007755, -1.8315967977692256, -1.5821496940324917]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.1037582906879235, -3.6344935044805777, -2.5219253897004736, -1.686502299130753]}}