{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:13.863886", "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": "2022-Apr-02_to_2022-Apr-08_306.0_3.0"}, "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": 2022040000144}, "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 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 08 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 52472.07737102133}, "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", "French Guiana", "Suriname"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": 3.0}, "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": 306.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "306.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 304.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 306.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-54.0, 4.25], [-53.47, 4.03], [-53.32, 3.68], [-52.97, 3.53], [-52.75, 3.0], [-52.85, 2.75], [-52.75, 2.5], [-52.97, 1.97], [-53.32, 1.82], [-53.47, 1.47], [-54.0, 1.25], [-54.25, 1.35], [-54.5, 1.25], [-54.75, 1.35], [-55.0, 1.25], [-55.53, 1.47], [-55.68, 1.82], [-56.03, 1.97], [-56.25, 2.5], [-56.15, 2.75], [-56.25, 3.0], [-56.15, 3.25], [-56.25, 3.5], [-56.15, 3.75], [-56.25, 4.0], [-56.03, 4.53], [-55.68, 4.68], [-55.53, 5.03], [-55.0, 5.25], [-54.47, 5.03], [-54.25, 4.5], [-54.35, 4.25], [-54.3, 4.13], [-54.0, 4.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-04-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.02999999999997, 3.03], [-55.5, 3.25], [-54.97000000000003, 3.03], [-54.75, 2.5], [-54.97000000000003, 1.97], [-55.5, 1.75], [-56.02999999999997, 1.97], [-56.25, 2.5], [-56.02999999999997, 3.03]]]]}, "2022-04-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.02999999999997, 1.97], [-56.25, 2.5], [-56.02999999999997, 3.03], [-55.5, 3.25], [-55.19999999999999, 3.12], [-55.02999999999997, 3.53], [-54.68000000000001, 3.68], [-54.52999999999997, 4.03], [-54.0, 4.25], [-53.47000000000003, 4.03], [-53.31999999999999, 3.68], [-52.97000000000003, 3.53], [-52.75, 3.0], [-52.85000000000002, 2.75], [-52.75, 2.5], [-52.97000000000003, 1.97], [-53.31999999999999, 1.82], [-53.47000000000003, 1.47], [-54.0, 1.25], [-54.25, 1.35], [-54.5, 1.25], [-54.75, 1.35], [-55.0, 1.25], [-55.52999999999997, 1.47], [-55.68000000000001, 1.82], [-56.02999999999997, 1.97]]]]}, "2022-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.02999999999997, 1.97], [-56.25, 2.5], [-56.02999999999997, 3.03], [-55.5, 3.25], [-55.19999999999999, 3.12], [-55.02999999999997, 3.53], [-54.68000000000001, 3.68], [-54.52999999999997, 4.03], [-54.0, 4.25], [-53.47000000000003, 4.03], [-53.31999999999999, 3.68], [-52.97000000000003, 3.53], [-52.75, 3.0], [-52.85000000000002, 2.75], [-52.75, 2.5], [-52.97000000000003, 1.97], [-53.31999999999999, 1.82], [-53.47000000000003, 1.47], [-54.0, 1.25], [-54.25, 1.35], [-54.5, 1.25], [-54.75, 1.35], [-55.0, 1.25], [-55.52999999999997, 1.47], [-55.68000000000001, 1.82], [-56.02999999999997, 1.97]]]]}, "2022-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.14999999999998, 2.75], [-55.25, 3.0], [-55.02999999999997, 3.53], [-54.68000000000001, 3.68], [-54.52999999999997, 4.03], [-54.0, 4.25], [-53.47000000000003, 4.03], [-53.31999999999999, 3.68], [-52.97000000000003, 3.53], [-52.75, 3.0], [-52.85000000000002, 2.75], [-52.75, 2.5], [-52.97000000000003, 1.97], [-53.31999999999999, 1.82], [-53.47000000000003, 1.47], [-54.0, 1.25], [-54.25, 1.35], [-54.5, 1.25], [-54.75, 1.35], [-55.0, 1.25], [-55.52999999999997, 1.47], [-55.75, 2.0], [-55.52999999999997, 2.53], [-55.18000000000001, 2.68], [-55.14999999999998, 2.75]]]]}, 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[-55.5, 2.25], [-56.02999999999997, 2.47], [-56.25, 3.0], [-56.14999999999998, 3.25], [-56.25, 3.5]]]]}, "2022-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.25, 3.5], [-56.14999999999998, 3.75], [-56.25, 4.0], [-56.02999999999997, 4.53], [-55.68000000000001, 4.68], [-55.52999999999997, 5.03], [-55.0, 5.25], [-54.47000000000003, 5.03], [-54.25, 4.5], [-54.35000000000002, 4.25], [-54.25, 4.0], [-54.35000000000002, 3.75], [-54.25, 3.5], [-54.47000000000003, 2.97], [-54.81999999999999, 2.82], [-54.97000000000003, 2.47], [-55.5, 2.25], [-56.02999999999997, 2.47], [-56.25, 3.0], [-56.14999999999998, 3.25], [-56.25, 3.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.055828729893676}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.4289683950734215}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.49450035116371, 23.71642873851721, 23.548139856250657, 24.04951553395756, 24.374070401867527, 24.41171283392356, 24.47776319871201]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.49450035116371, 22.680686083438957, 23.027882765363415, 23.548985177964084, 24.062018610573205, 24.06301762714355, 24.020290456902273]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9959381020722731, -1.5158393060429385, -1.6867701541674323, -1.2527273891158075, -1.3752655931305544, -1.351657245560953, -1.2939891768418381]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.9959381020722731, -1.9695814263159832, -2.055828729893676, -1.5450678210669935, -1.6626264230270635, -1.5117571744765996, -1.3506965323588247]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3314899672245162, -1.9018519261717506, -2.014798386991614, -1.4674933517004791, -1.6222829148370514, -1.6001814142267854, -1.5252518686707184]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3314899672245162, -2.449702529046769, -2.4995606804613444, -1.7455878165916365, -1.8967914447990415, -1.6888929969429116, -1.644485576958742]}}