{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:52:12.556220", "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-Apr-02_to_2023-Apr-05_312.0_-16.0"}, "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": 2023040000183}, "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": "April 02 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 05 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": 74337.26457956372}, "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": -16.0}, "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": 311.0}, "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": -18.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -14.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-48.65, -15.25], [-48.68, -15.18], [-49.03, -15.03], [-49.25, -14.5], [-49.15, -14.25], [-49.25, -14.0], [-49.03, -13.47], [-48.5, -13.25], [-48.25, -13.35], [-48.0, -13.25], [-47.47, -13.47], [-47.25, -14.0], [-47.35, -14.25], [-47.3, -14.38], [-47.0, -14.25], [-46.75, -14.35], [-46.68, -14.32], [-46.53, -13.97], [-46.0, -13.75], [-45.47, -13.97], [-45.25, -14.5], [-45.47, -15.03], [-45.82, -15.18], [-45.97, -15.53], [-46.32, -15.68], [-46.35, -15.75], [-46.25, -16.0], [-46.35, -16.25], [-46.25, -16.5], [-46.47, -17.03], [-46.82, -17.18], [-46.85, -17.25], [-46.75, -17.5], [-46.97, -18.03], [-47.32, -18.18], [-47.47, -18.53], [-48.0, -18.75], [-48.53, -18.53], [-48.75, -18.0], [-48.62, -17.7], [-49.03, -17.53], [-49.25, -17.0], [-49.15, -16.75], [-49.18, -16.68], [-49.53, -16.53], [-49.75, -16.0], [-49.53, -15.47], [-49.0, -15.25], [-48.75, -15.35], [-48.68, -15.32], [-48.65, -15.25]]]]}}, "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": {"2023-04-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.52999999999997, -16.53], [-49.75, -16.0], [-49.52999999999997, -15.47], [-49.0, -15.25], [-48.75, -15.35], [-48.68000000000001, -15.32], [-48.64999999999998, -15.25], [-48.68000000000001, -15.18], [-49.02999999999997, -15.03], [-49.25, -14.5], [-49.14999999999998, -14.25], [-49.25, -14.0], [-49.02999999999997, -13.47], [-48.5, -13.25], [-48.25, -13.35], [-48.0, -13.25], [-47.47000000000003, -13.47], [-47.25, -14.0], [-47.35000000000002, -14.25], [-47.25, -14.5], [-47.35000000000002, -14.75], [-47.25, -15.0], [-47.35000000000002, -15.25], [-47.25, -15.5], [-47.35000000000002, -15.75], [-47.25, -16.0], [-47.35000000000002, -16.25], [-47.25, -16.5], [-47.47000000000003, -17.03], [-48.0, -17.25], [-48.25, -17.15], [-48.5, -17.25], [-49.02999999999997, -17.03], [-49.18000000000001, -16.68], [-49.52999999999997, -16.53]]]]}, "2023-04-03T11:30:00.000000000": 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[-47.52999999999997, -14.47], [-47.0, -14.25], [-46.75, -14.35], [-46.68000000000001, -14.32], [-46.52999999999997, -13.97], [-46.0, -13.75], [-45.47000000000003, -13.97], [-45.25, -14.5], [-45.47000000000003, -15.03], [-45.81999999999999, -15.18], [-45.97000000000003, -15.53], [-46.31999999999999, -15.68], [-46.35000000000002, -15.75], [-46.25, -16.0], [-46.35000000000002, -16.25], [-46.25, -16.5], [-46.47000000000003, -17.03], [-46.81999999999999, -17.18], [-46.85000000000002, -17.25], [-46.75, -17.5], [-46.97000000000003, -18.03], [-47.31999999999999, -18.18], [-47.47000000000003, -18.53], [-48.0, -18.75], [-48.52999999999997, -18.53], [-48.75, -18.0], [-48.620000000000005, -17.7], [-49.02999999999997, -17.53], [-49.25, -17.0], [-49.14999999999998, -16.75], [-49.25, -16.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.1020112660494306}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9531624784651982}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.310259369927337, 21.33394277625399, 21.850024043792416, 21.97090050575082]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.34038722966858, 19.848134961891503, 20.47879182750563, 21.1008954139881]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.602821063920544, -2.4597406995832034, -1.9487533758955942, -1.4952428782694698]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.1460555170550606, -3.1020112660494306, -2.9600917011800902, -1.7178460855971593]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4792854012779524, -2.480347260246394, -1.9627964733987355, -1.4655986757426904]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9326214172748328, -3.165817975909102, -3.135177452748906, -1.669747458503305]}}