{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:35:54.001698", "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": "2023-Jul-19_to_2023-Jul-23_318.5_-4.0"}, "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": 2023070000500}, "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 19 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 23 2023"}, "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": 52349.4342583221}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South 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": -4.0}, "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": 318.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "318.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 315.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 319.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -6.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -3.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.5, -4.75], [-41.97, -4.97], [-41.75, -5.5], [-41.97, -6.03], [-42.5, -6.25], [-43.03, -6.03], [-43.25, -5.5], [-43.03, -4.97], [-42.5, -4.75]]]]}, "2023-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-43.53, -4.47], [-43.18, -4.32], [-43.15, -4.25], [-43.25, -4.0], [-43.03, -3.47], [-42.5, -3.25], [-42.25, -3.35], [-42.18, -3.32], [-42.03, -2.97], [-41.5, -2.75], [-41.25, -2.85], [-41.0, -2.75], [-40.47, -2.97], [-40.25, -3.5], [-40.47, -4.03], [-40.82, -4.18], [-40.97, -4.53], [-41.32, -4.68], [-41.35, -4.75], [-41.25, -5.0], [-41.35, -5.25], [-41.25, -5.5], [-41.35, -5.75], [-41.25, -6.0], [-41.47, -6.53], [-42.0, -6.75], [-42.53, -6.53], [-42.68, -6.18], [-42.75, -6.15], [-43.0, -6.25], [-43.53, -6.03], [-43.75, -5.5], [-43.65, -5.25], [-43.75, -5.0], [-43.53, -4.47]]]]}, "2023-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.03, -6.53], [-45.25, -6.0], [-45.03, -5.47], [-44.5, -5.25], [-44.25, -5.35], [-44.0, -5.25], [-43.75, -5.35], [-43.68, -5.32], [-43.65, -5.25], [-43.75, -5.0], [-43.53, -4.47], [-43.18, -4.32], [-43.15, -4.25], [-43.25, -4.0], [-43.03, -3.47], [-42.5, -3.25], [-42.25, -3.35], [-42.18, -3.32], [-42.03, -2.97], [-41.5, -2.75], [-41.25, -2.85], [-41.0, -2.75], [-40.47, -2.97], [-40.25, -3.5], [-40.47, -4.03], [-40.82, -4.18], [-40.97, -4.53], [-41.32, -4.68], [-41.35, -4.75], [-41.25, -5.0], [-41.35, -5.25], [-41.25, -5.5], [-41.35, -5.75], [-41.25, -6.0], [-41.47, -6.53], [-42.0, -6.75], [-42.53, -6.53], [-42.68, -6.18], [-42.75, -6.15], [-42.82, -6.18], [-42.97, -6.53], [-43.5, -6.75], [-43.75, -6.65], [-44.0, -6.75], [-44.25, -6.65], [-44.5, -6.75], [-45.03, -6.53]]]]}, "2023-07-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.03, -6.53], [-45.25, -6.0], [-45.03, -5.47], [-44.5, -5.25], [-44.25, -5.35], [-44.0, -5.25], [-43.75, -5.35], [-43.68, -5.32], [-43.65, -5.25], [-43.75, -5.0], [-43.53, -4.47], [-43.18, -4.32], [-43.15, -4.25], [-43.25, -4.0], [-43.03, -3.47], [-42.5, -3.25], [-42.25, -3.35], [-42.18, -3.32], [-42.03, -2.97], [-41.5, -2.75], [-41.25, -2.85], [-41.0, -2.75], [-40.47, -2.97], [-40.25, -3.5], [-40.47, -4.03], [-40.82, -4.18], [-40.97, -4.53], [-41.32, -4.68], [-41.35, -4.75], [-41.25, -5.0], [-41.35, -5.25], [-41.25, -5.5], [-41.35, -5.75], [-41.25, -6.0], [-41.47, -6.53], [-42.0, -6.75], [-42.53, -6.53], [-42.68, -6.18], [-42.75, -6.15], [-42.82, -6.18], [-42.97, -6.53], [-43.5, -6.75], [-43.75, -6.65], [-44.0, -6.75], [-44.25, -6.65], [-44.5, -6.75], [-45.03, -6.53]]]]}, "2023-07-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.03, -6.53], [-45.25, -6.0], [-45.03, -5.47], [-44.5, -5.25], [-44.25, -5.35], [-44.0, -5.25], [-43.75, -5.35], [-43.68, -5.32], [-43.65, -5.25], [-43.75, -5.0], [-43.53, -4.47], [-43.0, -4.25], [-42.75, -4.35], [-42.5, -4.25], [-42.07, -4.43], [-42.25, -4.0], [-42.03, -3.47], [-41.5, -3.25], [-40.97, -3.47], [-40.75, -4.0], [-40.97, -4.53], [-41.5, -4.75], [-41.93, -4.57], [-41.75, -5.0], [-41.85, -5.25], [-41.75, -5.5], [-41.97, -6.03], [-42.5, -6.25], [-42.75, -6.15], [-42.82, -6.18], [-42.97, -6.53], [-43.5, -6.75], [-43.75, -6.65], [-44.0, -6.75], [-44.25, -6.65], [-44.5, -6.75], [-45.03, -6.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.3184383969411897}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5234394704900203}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.54271077110417, 26.69107501710573, 26.502602164334462, 26.55755894087997, 26.40883100250261]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.54271077110417, 25.0860440410317, 24.78690286878833, 24.84994123647266, 25.062758100462304]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3753180362436979, -1.568135641450019, -1.539249316402748, -1.517875948871586, -1.4419629114654384]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.3753180362436979, -2.0335732521376713, -2.3184383969411897, -2.123875049734579, -1.58268182450297]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2280616578013386, -1.6123679042165484, -1.6140641415572676, -1.57225178205997, -1.4704120573679946]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.2280616578013386, -1.960840686595187, -2.268987819837709, -2.06559299653466, -1.7414929902350722]}}