{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:50:25.477236", "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-Jan-25_to_2023-Jan-28_312.0_-1.0"}, "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": 2023010001162}, "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": "January 25 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 28 2023"}, "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": 61813.319191844355}, "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": -1.0}, "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": 312.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "312.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 310.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 315.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -1.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 0.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-49.5, 0.75], [-49.25, 0.65], [-49.0, 0.75], [-48.75, 0.65], [-48.5, 0.75], [-48.25, 0.65], [-48.0, 0.75], [-47.47, 0.53], [-47.32, 0.18], [-47.2, 0.12], [-47.03, 0.53], [-46.5, 0.75], [-45.97, 0.53], [-45.75, 0.0], [-45.85, -0.25], [-45.75, -0.5], [-45.85, -0.75], [-45.82, -0.82], [-45.75, -0.85], [-45.5, -0.75], [-45.25, -0.85], [-45.0, -0.75], [-44.47, -0.97], [-44.25, -1.5], [-44.47, -2.03], [-45.0, -2.25], [-45.25, -2.15], [-45.5, -2.25], [-45.75, -2.15], [-46.0, -2.25], [-46.25, -2.15], [-46.5, -2.25], [-47.03, -2.03], [-47.18, -1.68], [-47.25, -1.65], [-47.32, -1.68], [-47.47, -2.03], [-48.0, -2.25], [-48.53, -2.03], [-48.68, -1.68], [-49.03, -1.53], [-49.18, -1.18], [-49.53, -1.03], [-49.68, -0.68], [-50.03, -0.53], [-50.25, 0.0], [-50.03, 0.53], [-49.5, 0.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America", "N.E.South-America", "Equatorial.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": 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[-49.52999999999997, -1.03], [-49.75, -0.5], [-49.64999999999998, -0.25], [-49.75, 0.0]]]]}, "2023-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.02999999999997, -0.53], [-50.25, 0.0], [-50.02999999999997, 0.53], [-49.5, 0.75], [-49.25, 0.65], [-49.0, 0.75], [-48.75, 0.65], [-48.5, 0.75], [-48.25, 0.65], [-48.0, 0.75], [-47.47000000000003, 0.53], [-47.31999999999999, 0.18], [-47.19999999999999, 0.12], [-47.02999999999997, 0.53], [-46.5, 0.75], [-45.97000000000003, 0.53], [-45.75, 0.0], [-45.85000000000002, -0.25], [-45.75, -0.5], [-45.85000000000002, -0.75], [-45.81999999999999, -0.82], [-45.75, -0.85], [-45.5, -0.75], [-45.25, -0.85], [-45.0, -0.75], [-44.47000000000003, -0.97], [-44.25, -1.5], [-44.47000000000003, -2.03], [-45.0, -2.25], [-45.25, -2.15], [-45.5, -2.25], [-45.75, -2.15], [-46.0, -2.25], [-46.25, -2.15], [-46.5, -2.25], [-47.02999999999997, -2.03], [-47.18000000000001, -1.68], [-47.25, -1.65], [-47.31999999999999, -1.68], 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"description": "Maximum t2m anomaly recorded over entire duration", "value": -2.173498857244738}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3193760048052143}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.976326691613735, 24.727556335211148, 24.98504576306891, 24.915823384790542]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.61382872431335, 24.104684264608125, 24.409337455286902, 24.69157276967053]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2337910196154338, -1.4948624800902592, -1.2362738808348923, -1.2455185689090058]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5892354671864268, -2.173498857244738, -1.8396768101034127, -1.4243064427588479]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5694592497650846, -1.889048749718485, -1.5130990377110332, -1.3473670391486845]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9427087034531398, -2.3130204100309575, -1.854248256340425, -1.4013885355271256]}}