{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:01.039624", "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-Jun-21_to_2022-Jun-24_318.5_-4.5"}, "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": 2022060000922}, "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": "June 21 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 24 2022"}, "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": 61640.394799934664}, "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": -4.5}, "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": 318.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "318.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 317.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 320.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -5.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -3.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-40.75, -3.85], [-40.5, -3.75], [-40.25, -3.85], [-40.0, -3.75], [-39.47, -3.97], [-39.25, -4.5], [-39.47, -5.03], [-39.82, -5.18], [-39.97, -5.53], [-40.5, -5.75], [-40.75, -5.65], [-41.0, -5.75], [-41.25, -5.65], [-41.32, -5.68], [-41.47, -6.03], [-42.0, -6.25], [-42.53, -6.03], [-42.75, -5.5], [-42.65, -5.25], [-42.68, -5.18], [-42.75, -5.15], [-43.0, -5.25], [-43.53, -5.03], [-43.75, -4.5], [-43.65, -4.25], [-43.75, -4.0], [-43.65, -3.75], [-43.75, -3.5], [-43.53, -2.97], [-43.0, -2.75], [-42.75, -2.85], [-42.5, -2.75], [-42.25, -2.85], [-42.0, -2.75], [-41.75, -2.85], [-41.5, -2.75], [-40.97, -2.97], [-40.75, -3.5], [-40.85, -3.75], [-40.82, -3.82], [-40.75, -3.85]]]]}}, "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": {"2022-06-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-43.75, -4.0], [-43.64999999999998, -3.75], [-43.75, -3.5], [-43.52999999999997, -2.97], [-43.0, -2.75], [-42.75, -2.85], [-42.5, -2.75], [-42.25, -2.85], [-42.0, -2.75], [-41.75, -2.85], [-41.5, -2.75], [-40.97000000000003, -2.97], [-40.75, -3.5], [-40.85000000000002, -3.75], [-40.81999999999999, -3.82], [-40.75, -3.85], [-40.5, -3.75], [-40.25, -3.85], [-40.0, -3.75], [-39.47000000000003, -3.97], [-39.25, -4.5], [-39.47000000000003, -5.03], [-39.81999999999999, -5.18], [-39.97000000000003, -5.53], [-40.5, -5.75], [-40.75, -5.65], [-41.0, -5.75], [-41.25, -5.65], [-41.31999999999999, -5.68], [-41.47000000000003, -6.03], [-42.0, -6.25], [-42.52999999999997, -6.03], [-42.75, -5.5], [-42.64999999999998, -5.25], [-42.68000000000001, -5.18], [-42.75, -5.15], [-43.0, -5.25], [-43.52999999999997, -5.03], [-43.75, -4.5], [-43.64999999999998, -4.25], [-43.75, -4.0]]]]}, "2022-06-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-43.75, -4.0], [-43.64999999999998, -3.75], [-43.75, -3.5], [-43.52999999999997, -2.97], [-43.0, -2.75], [-42.75, -2.85], [-42.5, -2.75], [-42.25, -2.85], [-42.0, -2.75], [-41.75, -2.85], [-41.5, -2.75], [-40.97000000000003, -2.97], [-40.75, -3.5], [-40.85000000000002, -3.75], [-40.81999999999999, -3.82], [-40.75, -3.85], [-40.5, -3.75], [-40.25, -3.85], [-40.0, -3.75], [-39.47000000000003, -3.97], [-39.25, -4.5], [-39.47000000000003, -5.03], [-39.81999999999999, -5.18], [-39.97000000000003, -5.53], [-40.5, -5.75], [-40.75, -5.65], [-41.0, -5.75], [-41.25, -5.65], [-41.31999999999999, -5.68], [-41.47000000000003, -6.03], [-42.0, -6.25], [-42.52999999999997, -6.03], [-42.75, -5.5], [-42.64999999999998, -5.25], [-42.68000000000001, -5.18], [-42.75, -5.15], [-43.0, -5.25], [-43.52999999999997, -5.03], [-43.75, -4.5], [-43.64999999999998, -4.25], [-43.75, -4.0]]]]}, "2022-06-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-43.75, -4.0], [-43.64999999999998, -3.75], [-43.75, -3.5], [-43.52999999999997, -2.97], [-43.0, -2.75], [-42.75, -2.85], [-42.5, -2.75], [-42.25, -2.85], [-42.0, -2.75], [-41.75, -2.85], [-41.5, -2.75], [-40.97000000000003, -2.97], [-40.75, -3.5], [-40.85000000000002, -3.75], [-40.81999999999999, -3.82], [-40.75, -3.85], [-40.5, -3.75], [-40.25, -3.85], [-40.0, -3.75], [-39.47000000000003, -3.97], [-39.25, -4.5], [-39.47000000000003, -5.03], [-39.81999999999999, -5.18], [-39.97000000000003, -5.53], [-40.5, -5.75], [-40.75, -5.65], [-41.0, -5.75], [-41.25, -5.65], [-41.31999999999999, -5.68], [-41.47000000000003, -6.03], [-42.0, -6.25], [-42.52999999999997, -6.03], [-42.75, -5.5], [-42.64999999999998, -5.25], [-42.68000000000001, -5.18], [-42.75, -5.15], [-43.0, -5.25], [-43.52999999999997, -5.03], [-43.75, -4.5], [-43.64999999999998, -4.25], [-43.75, -4.0]]]]}, "2022-06-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-42.25, -4.0], [-42.02999999999997, -3.47], [-41.5, -3.25], [-40.97000000000003, -3.47], [-40.81999999999999, -3.82], [-40.47000000000003, -3.97], [-40.25, -4.5], [-40.47000000000003, -5.03], [-41.0, -5.25], [-41.25, -5.15], [-41.370000000000005, -5.2], [-41.25, -5.5], [-41.47000000000003, -6.03], [-42.0, -6.25], [-42.52999999999997, -6.03], [-42.75, -5.5], [-42.52999999999997, -4.97], [-42.120000000000005, -4.8], [-42.25, -4.5], [-42.14999999999998, -4.25], [-42.25, -4.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.717501340387571}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8054434848733667}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.334195283495717, 25.668912243179136, 25.498351159511287, 25.96089921222824]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.600880558422034, 22.904889602699598, 22.74674884860815, 23.75371614661401]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.0051059792996653, -1.6716744140022086, -1.829629014598075, -1.355048718474123]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.717501340387571, -2.3495821228754608, -2.582570872015026, -1.460396061537267]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0814026661154483, -1.705421492463827, -1.8480127332525433, -1.3334579490010494]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.0699172737269182, -2.273238225572084, -2.586891602636579, -1.4672779376672052]}}