{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:00:33.143930", "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": "2024-Aug-25_to_2024-Aug-27_301.5_-12.0"}, "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": 2024080000653}, "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": "August 25 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 27 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 150707.1139623282}, "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": ["Bolivia, Plurinational State of", "Brazil"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": []}, "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": -12.0}, "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": 301.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "301.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 297.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 303.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -14.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -11.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-63.03, -12.97], [-62.5, -12.75], [-62.25, -12.85], [-62.0, -12.75], [-61.75, -12.85], [-61.68, -12.82], [-61.65, -12.75], [-61.75, -12.5], [-61.53, -11.97], [-61.0, -11.75], [-60.75, -11.85], [-60.5, -11.75], [-60.2, -11.88], [-60.15, -11.75], [-60.25, -11.5], [-60.03, -10.97], [-59.68, -10.82], [-59.53, -10.47], [-59.0, -10.25], [-58.75, -10.35], [-58.5, -10.25], [-58.25, -10.35], [-58.0, -10.25], [-57.75, -10.35], [-57.5, -10.25], [-56.97, -10.47], [-56.82, -10.82], [-56.47, -10.97], [-56.25, -11.5], [-56.35, -11.75], [-56.32, -11.82], [-55.97, -11.97], [-55.75, -12.5], [-55.85, -12.75], [-55.75, -13.0], [-55.97, -13.53], [-56.5, -13.75], [-56.75, -13.65], [-57.0, -13.75], [-57.25, -13.65], [-57.32, -13.68], [-57.47, -14.03], [-58.0, -14.25], [-58.25, -14.15], [-58.5, -14.25], [-59.0, -14.04], [-59.32, -14.18], [-59.35, -14.25], [-59.25, -14.5], [-59.47, -15.03], [-60.0, -15.25], [-60.5, -15.04], [-61.0, -15.25], [-61.5, -15.04], [-62.0, -15.25], [-62.25, -15.15], [-62.5, -15.25], [-62.75, -15.15], [-63.0, -15.25], [-63.53, -15.03], [-63.75, -14.5], [-63.53, -13.97], [-63.18, -13.82], [-63.15, -13.75], [-63.25, -13.5], [-63.03, -12.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["South-American-Monsoon"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.14999999999998, -13.75], [-63.25, -13.5], [-63.02999999999997, -12.97], [-62.5, -12.75], [-62.25, -12.85], [-62.0, -12.75], [-61.75, -12.85], [-61.68000000000001, -12.82], [-61.64999999999998, -12.75], [-61.75, -12.5], [-61.52999999999997, -11.97], [-61.0, -11.75], [-60.75, -11.85], [-60.5, -11.75], [-60.19999999999999, -11.88], [-60.14999999999998, -11.75], [-60.25, -11.5], [-60.02999999999997, -10.97], [-59.68000000000001, -10.82], [-59.52999999999997, -10.47], [-59.0, -10.25], [-58.75, -10.35], [-58.5, -10.25], [-58.25, -10.35], [-58.0, -10.25], [-57.75, -10.35], [-57.5, -10.25], [-56.97000000000003, -10.47], [-56.81999999999999, -10.82], [-56.47000000000003, -10.97], [-56.25, -11.5], [-56.35000000000002, -11.75], [-56.31999999999999, -11.82], [-55.97000000000003, -11.97], [-55.75, -12.5], [-55.85000000000002, -12.75], [-55.75, -13.0], [-55.97000000000003, -13.53], [-56.5, -13.75], [-56.75, -13.65], [-57.0, -13.75], [-57.25, -13.65], [-57.31999999999999, -13.68], [-57.47000000000003, -14.03], [-58.0, -14.25], [-58.25, -14.15], [-58.5, -14.25], [-59.0, -14.04], [-59.31999999999999, -14.18], [-59.35000000000002, -14.25], [-59.25, -14.5], [-59.47000000000003, -15.03], [-60.0, -15.25], [-60.5, -15.04], [-61.0, -15.25], [-61.5, -15.04], [-62.0, -15.25], [-62.25, -15.15], [-62.5, -15.25], [-62.75, -15.15], [-63.0, -15.25], [-63.52999999999997, -15.03], [-63.75, -14.5], [-63.52999999999997, -13.97], [-63.18000000000001, -13.82], [-63.14999999999998, -13.75]]]]}, "2024-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.14999999999998, -13.75], [-63.25, -13.5], [-63.02999999999997, -12.97], [-62.5, -12.75], [-62.25, -12.85], [-62.0, -12.75], [-61.75, -12.85], [-61.68000000000001, -12.82], [-61.64999999999998, -12.75], [-61.75, -12.5], [-61.52999999999997, -11.97], [-61.0, -11.75], [-60.75, -11.85], [-60.5, -11.75], [-60.19999999999999, -11.88], [-60.14999999999998, -11.75], [-60.25, -11.5], [-60.02999999999997, -10.97], [-59.68000000000001, -10.82], [-59.52999999999997, -10.47], [-59.0, -10.25], [-58.75, -10.35], [-58.5, -10.25], [-58.25, -10.35], [-58.0, -10.25], [-57.75, -10.35], [-57.5, -10.25], [-56.97000000000003, -10.47], [-56.81999999999999, -10.82], [-56.47000000000003, -10.97], [-56.25, -11.5], [-56.35000000000002, -11.75], [-56.31999999999999, -11.82], [-55.97000000000003, -11.97], [-55.75, -12.5], [-55.85000000000002, -12.75], [-55.75, -13.0], [-55.97000000000003, -13.53], [-56.5, -13.75], [-56.75, -13.65], [-57.0, -13.75], [-57.25, -13.65], [-57.31999999999999, -13.68], [-57.47000000000003, -14.03], [-58.0, -14.25], [-58.25, -14.15], [-58.5, -14.25], [-59.0, -14.04], [-59.31999999999999, -14.18], [-59.35000000000002, -14.25], [-59.25, -14.5], [-59.47000000000003, -15.03], [-60.0, -15.25], [-60.5, -15.04], [-61.0, -15.25], [-61.5, -15.04], [-62.0, -15.25], [-62.25, -15.15], [-62.5, -15.25], [-62.75, -15.15], [-63.0, -15.25], [-63.52999999999997, -15.03], [-63.75, -14.5], [-63.52999999999997, -13.97], [-63.18000000000001, -13.82], [-63.14999999999998, -13.75]]]]}, "2024-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.14999999999998, -13.75], [-63.25, -13.5], [-63.02999999999997, -12.97], [-62.5, -12.75], [-62.25, -12.85], [-62.0, -12.75], [-61.75, -12.85], [-61.68000000000001, -12.82], [-61.64999999999998, -12.75], [-61.75, -12.5], [-61.52999999999997, -11.97], [-61.0, -11.75], [-60.75, -11.85], [-60.5, -11.75], [-60.19999999999999, -11.88], [-60.14999999999998, -11.75], [-60.25, -11.5], [-60.02999999999997, -10.97], [-59.68000000000001, -10.82], [-59.52999999999997, -10.47], [-59.0, -10.25], [-58.75, -10.35], [-58.5, -10.25], [-58.25, -10.35], [-58.0, -10.25], [-57.75, -10.35], [-57.5, -10.25], [-56.97000000000003, -10.47], [-56.81999999999999, -10.82], [-56.47000000000003, -10.97], [-56.25, -11.5], [-56.35000000000002, -11.75], [-56.31999999999999, -11.82], [-55.97000000000003, -11.97], [-55.75, -12.5], [-55.85000000000002, -12.75], [-55.75, -13.0], [-55.97000000000003, -13.53], [-56.5, -13.75], [-56.75, -13.65], [-57.0, -13.75], [-57.25, -13.65], [-57.31999999999999, -13.68], [-57.47000000000003, -14.03], [-58.0, -14.25], [-58.25, -14.15], [-58.5, -14.25], [-59.0, -14.04], [-59.31999999999999, -14.18], [-59.35000000000002, -14.25], [-59.25, -14.5], [-59.47000000000003, -15.03], [-60.0, -15.25], [-60.5, -15.04], [-61.0, -15.25], [-61.5, -15.04], [-62.0, -15.25], [-62.25, -15.15], [-62.5, -15.25], [-62.75, -15.15], [-63.0, -15.25], [-63.52999999999997, -15.03], [-63.75, -14.5], [-63.52999999999997, -13.97], [-63.18000000000001, -13.82], [-63.14999999999998, -13.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.977336359087872}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.003425164227187}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.453304552686575, 20.40744779589039, 23.25571556715272]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.889822580103782, 18.25778441341322, 21.099448075557746]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.4912340155568042, -5.651449817862755, -2.867591659262008]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.222571970307797, -6.977336359087872, -4.202409292760308]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.838141279559685, -3.2626442010239782, -1.6009928386156829]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.8865135812454357, -3.946458225544956, -2.181520412810299]}}