{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:20:12.349715", "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-May-20_to_2022-May-22_305.5_6.5"}, "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": 2022050000776}, "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": "May 20 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 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": 64521.79889072428}, "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": ["Suriname"]}, "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": ["Atlantic Ocean"]}, "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": 6.5}, "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": 305.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "305.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 303.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 308.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-57.0, 7.25], [-56.75, 7.15], [-56.5, 7.25], [-56.25, 7.15], [-56.0, 7.25], [-55.75, 7.15], [-55.5, 7.25], [-55.25, 7.15], [-55.0, 7.25], [-54.75, 7.15], [-54.5, 7.25], [-54.25, 7.15], [-54.0, 7.25], [-53.75, 7.15], [-53.5, 7.25], [-53.25, 7.15], [-53.0, 7.25], [-52.75, 7.15], [-52.5, 7.25], [-52.25, 7.15], [-52.0, 7.25], [-51.75, 7.15], [-51.5, 7.25], [-50.97, 7.03], [-50.75, 6.5], [-50.85, 6.25], [-50.75, 6.0], [-50.97, 5.47], [-51.5, 5.25], [-51.75, 5.35], [-52.0, 5.25], [-52.25, 5.35], [-52.5, 5.25], [-52.75, 5.35], [-53.0, 5.25], [-53.25, 5.35], [-53.5, 5.25], [-53.75, 5.35], [-54.0, 5.25], [-54.25, 5.35], [-54.5, 5.25], [-54.75, 5.35], [-55.0, 5.25], [-55.53, 5.47], [-55.68, 5.82], [-55.75, 5.85], [-56.0, 5.75], [-56.25, 5.85], [-56.32, 5.82], [-56.47, 5.47], [-57.0, 5.25], [-57.53, 5.47], [-57.75, 6.0], [-57.65, 6.25], [-57.75, 6.5], [-57.53, 7.03], [-57.0, 7.25]]]]}}, "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": {"2022-05-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.75, 6.5], [-57.52999999999997, 7.03], [-57.0, 7.25], [-56.75, 7.15], [-56.5, 7.25], [-56.25, 7.15], [-56.0, 7.25], [-55.75, 7.15], [-55.5, 7.25], [-55.25, 7.15], [-55.0, 7.25], [-54.75, 7.15], [-54.5, 7.25], [-54.25, 7.15], [-54.0, 7.25], [-53.75, 7.15], [-53.5, 7.25], [-53.25, 7.15], [-53.0, 7.25], [-52.75, 7.15], [-52.5, 7.25], [-52.25, 7.15], [-52.0, 7.25], [-51.75, 7.15], [-51.5, 7.25], [-50.97000000000003, 7.03], [-50.75, 6.5], [-50.85000000000002, 6.25], [-50.75, 6.0], [-50.97000000000003, 5.47], [-51.5, 5.25], [-51.75, 5.35], [-52.0, 5.25], [-52.25, 5.35], [-52.5, 5.25], [-52.75, 5.35], [-53.0, 5.25], [-53.25, 5.35], [-53.5, 5.25], [-53.75, 5.35], [-54.0, 5.25], [-54.25, 5.35], [-54.5, 5.25], [-54.75, 5.35], [-55.0, 5.25], [-55.52999999999997, 5.47], [-55.68000000000001, 5.82], [-55.75, 5.85], [-56.0, 5.75], [-56.25, 5.85], [-56.31999999999999, 5.82], [-56.47000000000003, 5.47], [-57.0, 5.25], [-57.52999999999997, 5.47], [-57.75, 6.0], [-57.64999999999998, 6.25], [-57.75, 6.5]]]]}, "2022-05-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.75, 6.5], [-57.52999999999997, 7.03], [-57.0, 7.25], [-56.75, 7.15], [-56.5, 7.25], [-56.25, 7.15], [-56.0, 7.25], [-55.75, 7.15], [-55.5, 7.25], [-55.25, 7.15], [-55.0, 7.25], [-54.75, 7.15], [-54.5, 7.25], [-54.25, 7.15], [-54.0, 7.25], [-53.75, 7.15], [-53.5, 7.25], [-53.25, 7.15], [-53.0, 7.25], [-52.75, 7.15], [-52.5, 7.25], [-52.25, 7.15], [-52.0, 7.25], [-51.75, 7.15], [-51.5, 7.25], [-50.97000000000003, 7.03], [-50.75, 6.5], [-50.85000000000002, 6.25], [-50.75, 6.0], [-50.97000000000003, 5.47], [-51.5, 5.25], [-51.75, 5.35], [-52.0, 5.25], [-52.25, 5.35], [-52.5, 5.25], [-52.75, 5.35], [-53.0, 5.25], [-53.25, 5.35], [-53.5, 5.25], [-53.75, 5.35], [-54.0, 5.25], [-54.25, 5.35], [-54.5, 5.25], [-54.75, 5.35], [-55.0, 5.25], [-55.52999999999997, 5.47], [-55.68000000000001, 5.82], [-55.75, 5.85], [-56.0, 5.75], [-56.25, 5.85], [-56.31999999999999, 5.82], [-56.47000000000003, 5.47], [-57.0, 5.25], [-57.52999999999997, 5.47], [-57.75, 6.0], [-57.64999999999998, 6.25], [-57.75, 6.5]]]]}, "2022-05-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.75, 6.5], [-57.52999999999997, 7.03], [-57.0, 7.25], [-56.75, 7.15], [-56.5, 7.25], [-56.25, 7.15], [-56.0, 7.25], [-55.75, 7.15], [-55.5, 7.25], [-55.25, 7.15], [-55.0, 7.25], [-54.75, 7.15], [-54.5, 7.25], [-54.25, 7.15], [-54.0, 7.25], [-53.75, 7.15], [-53.5, 7.25], [-53.25, 7.15], [-53.0, 7.25], [-52.75, 7.15], [-52.5, 7.25], [-52.25, 7.15], [-52.0, 7.25], [-51.75, 7.15], [-51.5, 7.25], [-50.97000000000003, 7.03], [-50.75, 6.5], [-50.85000000000002, 6.25], [-50.75, 6.0], [-50.97000000000003, 5.47], [-51.5, 5.25], [-51.75, 5.35], [-52.0, 5.25], [-52.25, 5.35], [-52.5, 5.25], [-52.75, 5.35], [-53.0, 5.25], [-53.25, 5.35], [-53.5, 5.25], [-53.75, 5.35], [-54.0, 5.25], [-54.25, 5.35], [-54.5, 5.25], [-54.75, 5.35], [-55.0, 5.25], [-55.52999999999997, 5.47], [-55.68000000000001, 5.82], [-55.75, 5.85], [-56.0, 5.75], [-56.25, 5.85], [-56.31999999999999, 5.82], [-56.47000000000003, 5.47], [-57.0, 5.25], [-57.52999999999997, 5.47], [-57.75, 6.0], [-57.64999999999998, 6.25], [-57.75, 6.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.1398194487261435}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.7794382585762907}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.620947397144448, 25.544725457114964, 25.44873462287319]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.461120783759213, 25.207116504835085, 24.99448230929039]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.6960958278410257, -0.779681267676359, -0.8625376802114872]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.8459936546307745, -0.9556956347975074, -1.1398194487261435]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5693207276923962, -1.7136424480377288, -1.884828607724037]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8394199658657708, -2.244076318715139, -2.5623085750846637]}}