{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:26.392365", "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-20_to_2022-Apr-22_304.5_0.5"}, "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": 2022040000660}, "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 20 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 22 2022"}, "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": 58711.414479773215}, "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": 0.5}, "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": 304.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "304.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 302.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 305.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -2.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 0.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-58.25, -2.0], [-58.03, -1.47], [-57.5, -1.25], [-57.25, -1.35], [-57.18, -1.32], [-57.03, -0.97], [-56.5, -0.75], [-56.25, -0.85], [-56.18, -0.82], [-56.15, -0.75], [-56.25, -0.5], [-56.15, -0.25], [-56.25, 0.0], [-56.15, 0.25], [-56.25, 0.5], [-56.03, 1.03], [-55.5, 1.25], [-55.25, 1.15], [-55.0, 1.25], [-54.47, 1.03], [-54.25, 0.5], [-54.35, 0.25], [-54.25, 0.0], [-54.35, -0.25], [-54.25, -0.5], [-54.35, -0.75], [-54.32, -0.82], [-53.97, -0.97], [-53.75, -1.5], [-53.85, -1.75], [-53.75, -2.0], [-53.97, -2.53], [-54.5, -2.75], [-54.75, -2.65], [-54.82, -2.68], [-54.97, -3.03], [-55.5, -3.25], [-56.03, -3.03], [-56.25, -2.5], [-56.15, -2.25], [-56.18, -2.18], [-56.25, -2.15], [-56.32, -2.18], [-56.47, -2.53], [-57.0, -2.75], [-57.25, -2.65], [-57.5, -2.75], [-58.03, -2.53], [-58.25, -2.0]]]]}}, "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": {"2022-04-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.5, -2.75], [-58.02999999999997, -2.53], [-58.25, -2.0], [-58.02999999999997, -1.47], [-57.5, -1.25], [-57.25, -1.35], [-57.18000000000001, -1.32], [-57.02999999999997, -0.97], [-56.5, -0.75], [-56.25, -0.85], [-56.18000000000001, -0.82], [-56.14999999999998, -0.75], [-56.25, -0.5], [-56.14999999999998, -0.25], [-56.25, 0.0], [-56.14999999999998, 0.25], [-56.25, 0.5], [-56.02999999999997, 1.03], [-55.5, 1.25], [-55.25, 1.15], [-55.0, 1.25], [-54.47000000000003, 1.03], [-54.25, 0.5], [-54.35000000000002, 0.25], [-54.25, 0.0], [-54.35000000000002, -0.25], [-54.25, -0.5], [-54.35000000000002, -0.75], [-54.31999999999999, -0.82], [-53.97000000000003, -0.97], [-53.75, -1.5], [-53.85000000000002, -1.75], [-53.75, -2.0], [-53.97000000000003, -2.53], [-54.5, -2.75], [-54.75, -2.65], [-54.81999999999999, -2.68], [-54.97000000000003, -3.03], [-55.5, -3.25], [-56.02999999999997, -3.03], [-56.25, -2.5], [-56.14999999999998, -2.25], [-56.18000000000001, -2.18], [-56.25, -2.15], [-56.31999999999999, -2.18], [-56.47000000000003, -2.53], [-57.0, -2.75], [-57.25, -2.65], [-57.5, -2.75]]]]}, "2022-04-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.5, -2.75], [-58.02999999999997, -2.53], [-58.25, -2.0], [-58.02999999999997, -1.47], [-57.5, -1.25], [-57.25, -1.35], [-57.18000000000001, -1.32], [-57.02999999999997, -0.97], [-56.5, -0.75], [-56.25, -0.85], [-56.18000000000001, -0.82], [-56.14999999999998, -0.75], [-56.25, -0.5], [-56.14999999999998, -0.25], [-56.25, 0.0], [-56.14999999999998, 0.25], [-56.25, 0.5], [-56.02999999999997, 1.03], [-55.5, 1.25], [-55.25, 1.15], [-55.0, 1.25], [-54.47000000000003, 1.03], [-54.25, 0.5], [-54.35000000000002, 0.25], [-54.25, 0.0], [-54.35000000000002, -0.25], [-54.25, -0.5], [-54.35000000000002, -0.75], [-54.31999999999999, -0.82], [-53.97000000000003, -0.97], [-53.75, -1.5], [-53.85000000000002, -1.75], [-53.75, -2.0], [-53.97000000000003, -2.53], [-54.5, -2.75], [-54.75, -2.65], [-54.81999999999999, -2.68], [-54.97000000000003, -3.03], [-55.5, -3.25], [-56.02999999999997, -3.03], [-56.25, -2.5], [-56.14999999999998, -2.25], [-56.18000000000001, -2.18], [-56.25, -2.15], [-56.31999999999999, -2.18], [-56.47000000000003, -2.53], [-57.0, -2.75], [-57.25, -2.65], [-57.5, -2.75]]]]}, "2022-04-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.5, -2.75], [-58.02999999999997, -2.53], [-58.25, -2.0], [-58.02999999999997, -1.47], [-57.5, -1.25], [-57.25, -1.35], [-57.18000000000001, -1.32], [-57.02999999999997, -0.97], [-56.5, -0.75], [-56.25, -0.85], [-56.18000000000001, -0.82], [-56.14999999999998, -0.75], [-56.25, -0.5], [-56.14999999999998, -0.25], [-56.25, 0.0], [-56.14999999999998, 0.25], [-56.25, 0.5], [-56.02999999999997, 1.03], [-55.5, 1.25], [-55.25, 1.15], [-55.0, 1.25], [-54.47000000000003, 1.03], [-54.25, 0.5], [-54.35000000000002, 0.25], [-54.25, 0.0], [-54.35000000000002, -0.25], [-54.25, -0.5], [-54.35000000000002, -0.75], [-54.31999999999999, -0.82], [-53.97000000000003, -0.97], [-53.75, -1.5], [-53.85000000000002, -1.75], [-53.75, -2.0], [-53.97000000000003, -2.53], [-54.5, -2.75], [-54.75, -2.65], [-54.81999999999999, -2.68], [-54.97000000000003, -3.03], [-55.5, -3.25], [-56.02999999999997, -3.03], [-56.25, -2.5], [-56.14999999999998, -2.25], [-56.18000000000001, -2.18], [-56.25, -2.15], [-56.31999999999999, -2.18], [-56.47000000000003, -2.53], [-57.0, -2.75], [-57.25, -2.65], [-57.5, -2.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.4055010445343896}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3671130453935274}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.157463116759573, 23.667722544186404, 24.05389705076209]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.94250527230946, 22.102178641755188, 22.73178962338585]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1642472072040546, -1.6696072421005965, -1.267484686875931]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.4732868105437547, -2.4055010445343896, -1.6411147151709429]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5232463450746128, -2.1049286102742677, -1.6390756158375943]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.09276306161788, -2.86777278562896, -2.130109039470822]}}