{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:51:45.868879", "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-Mar-17_to_2023-Mar-22_313.0_-6.0"}, "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": 2023030000580}, "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": "March 17 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 22 2023"}, "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": 52334.6279703379}, "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": []}, "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": -6.0}, "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": 313.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "313.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 311.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 314.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -6.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -4.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-47.75, -3.35], [-47.5, -3.25], [-47.25, -3.35], [-47.0, -3.25], [-46.47, -3.47], [-46.25, -4.0], [-46.35, -4.25], [-46.25, -4.5], [-46.35, -4.75], [-46.25, -5.0], [-46.35, -5.25], [-46.32, -5.32], [-45.97, -5.47], [-45.82, -5.82], [-45.47, -5.97], [-45.25, -6.5], [-45.47, -7.03], [-46.0, -7.25], [-46.25, -7.15], [-46.5, -7.25], [-46.75, -7.15], [-47.0, -7.25], [-47.53, -7.03], [-47.75, -6.5], [-47.65, -6.25], [-47.68, -6.18], [-48.03, -6.03], [-48.25, -5.5], [-48.15, -5.25], [-48.18, -5.18], [-48.25, -5.15], [-48.5, -5.25], [-49.03, -5.03], [-49.25, -4.5], [-49.15, -4.25], [-49.25, -4.0], [-49.03, -3.47], [-48.5, -3.25], [-48.25, -3.35], [-48.0, -3.25], [-47.75, -3.35]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-03-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.0, -4.75], [-48.52999999999997, -4.53], [-48.75, -4.0], [-48.52999999999997, -3.47], 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[-46.47000000000003, -3.97], [-46.25, -4.5], [-46.47000000000003, -5.03], [-46.870000000000005, -5.2], [-46.81999999999999, -5.32], [-46.75, -5.35], [-46.5, -5.25], [-45.97000000000003, -5.47], [-45.75, -6.0], [-45.85000000000002, -6.25], [-45.75, -6.5], [-45.97000000000003, -7.03], [-46.5, -7.25], [-46.75, -7.15], [-47.0, -7.25], [-47.52999999999997, -7.03], [-47.75, -6.5], [-47.64999999999998, -6.25], [-47.68000000000001, -6.18], [-48.02999999999997, -6.03], [-48.25, -5.5], [-48.02999999999997, -4.97], [-47.620000000000005, -4.8], [-47.68000000000001, -4.68], [-47.75, -4.65], [-48.0, -4.75]]]]}, "2023-03-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.25, -4.0], [-49.02999999999997, -3.47], [-48.5, -3.25], [-48.25, -3.35], [-48.0, -3.25], [-47.75, -3.35], [-47.5, -3.25], [-46.97000000000003, -3.47], [-46.81999999999999, -3.82], [-46.47000000000003, -3.97], [-46.25, -4.5], [-46.47000000000003, -5.03], [-46.81999999999999, -5.18], [-46.85000000000002, -5.25], 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maximum t2m.", "value": [23.3135945563551, 24.156407138785596, 23.60123553165255, 23.557511300571946, 23.036254000879524, 23.284935565150022]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7719852196234598, -1.3368604857339932, -1.3786031132407734, -1.3865492127282977, -1.7880802296815084, -1.5134193750967442]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.194456141832177, -1.6470100024603767, -1.6090331063153371, -1.6597287567090575, -2.0074736605481576, -1.8431381776138664]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8504772829838827, -1.445369985007711, -1.4776046722635938, -1.5136531465974044, -2.0022947616176983, -1.7251518285426777]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.14289439456255, -1.726491753154582, -1.6910285077550486, -1.8423526119565807, -2.350896919004193, -2.17836222668686]}}