{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:50:17.407231", "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-Jan-11_to_2023-Jan-14_287.5_2.0"}, "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": 2023010000578}, "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": "January 11 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 14 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": 58676.583969158266}, "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": ["Colombia"]}, "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": 2.0}, "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": 287.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "287.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 287.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 289.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 1.5}, "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": [[[[-73.15, 2.75], [-73.25, 3.0], [-73.03, 3.53], [-72.5, 3.75], [-72.25, 3.65], [-72.18, 3.68], [-72.03, 4.03], [-71.5, 4.25], [-71.25, 4.15], [-71.0, 4.25], [-70.47, 4.03], [-70.25, 3.5], [-70.35, 3.25], [-70.25, 3.0], [-70.35, 2.75], [-70.25, 2.5], [-70.35, 2.25], [-70.25, 2.0], [-70.47, 1.47], [-70.82, 1.32], [-70.97, 0.97], [-71.5, 0.75], [-71.75, 0.85], [-72.0, 0.75], [-72.25, 0.85], [-72.5, 0.75], [-72.75, 0.85], [-73.0, 0.75], [-73.53, 0.97], [-73.75, 1.5], [-73.65, 1.75], [-73.75, 2.0], [-73.53, 2.53], [-73.18, 2.68], [-73.15, 2.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.South-America", "N.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.75, 2.0], [-73.52999999999997, 2.53], [-73.18, 2.68], [-73.14999999999998, 2.75], [-73.25, 3.0], [-73.02999999999997, 3.53], [-72.5, 3.75], [-72.25, 3.65], [-72.18, 3.68], [-72.02999999999997, 4.03], [-71.5, 4.25], [-71.25, 4.15], [-71.0, 4.25], [-70.47000000000003, 4.03], [-70.25, 3.5], [-70.35000000000002, 3.25], [-70.25, 3.0], [-70.47000000000003, 2.47], [-70.82, 2.32], [-70.97000000000003, 1.97], [-71.32, 1.82], [-71.35000000000002, 1.75], [-71.25, 1.5], [-71.47000000000003, 0.97], [-72.0, 0.75], [-72.25, 0.85], [-72.5, 0.75], [-72.75, 0.85], [-73.0, 0.75], [-73.52999999999997, 0.97], [-73.75, 1.5], [-73.64999999999998, 1.75], [-73.75, 2.0]]]]}, "2023-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.75, 2.0], [-73.52999999999997, 2.53], [-73.18, 2.68], [-73.14999999999998, 2.75], [-73.25, 3.0], [-73.02999999999997, 3.53], [-72.5, 3.75], [-72.25, 3.65], [-72.18, 3.68], [-72.02999999999997, 4.03], [-71.5, 4.25], [-71.25, 4.15], [-71.0, 4.25], [-70.47000000000003, 4.03], [-70.25, 3.5], [-70.35000000000002, 3.25], [-70.25, 3.0], [-70.35000000000002, 2.75], [-70.25, 2.5], [-70.35000000000002, 2.25], [-70.25, 2.0], [-70.47000000000003, 1.47], [-70.82, 1.32], [-70.97000000000003, 0.97], [-71.5, 0.75], [-71.75, 0.85], [-72.0, 0.75], [-72.25, 0.85], [-72.5, 0.75], [-72.75, 0.85], [-73.0, 0.75], [-73.52999999999997, 0.97], [-73.75, 1.5], [-73.64999999999998, 1.75], [-73.75, 2.0]]]]}, "2023-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.75, 2.0], [-73.52999999999997, 2.53], [-73.18, 2.68], [-73.14999999999998, 2.75], [-73.25, 3.0], [-73.02999999999997, 3.53], [-72.5, 3.75], [-72.25, 3.65], [-72.18, 3.68], [-72.02999999999997, 4.03], [-71.5, 4.25], [-71.25, 4.15], [-71.0, 4.25], [-70.47000000000003, 4.03], [-70.25, 3.5], [-70.35000000000002, 3.25], [-70.25, 3.0], [-70.35000000000002, 2.75], [-70.25, 2.5], [-70.35000000000002, 2.25], [-70.25, 2.0], [-70.47000000000003, 1.47], [-70.82, 1.32], [-70.97000000000003, 0.97], [-71.5, 0.75], [-71.75, 0.85], [-72.0, 0.75], [-72.25, 0.85], [-72.5, 0.75], [-72.75, 0.85], [-73.0, 0.75], [-73.52999999999997, 0.97], [-73.75, 1.5], [-73.64999999999998, 1.75], [-73.75, 2.0]]]]}, "2023-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.75, 2.0], [-73.52999999999997, 2.53], [-73.18, 2.68], [-73.02999999999997, 3.03], [-72.5, 3.25], [-72.25, 3.15], [-72.0, 3.25], [-71.75, 3.15], [-71.5, 3.25], [-71.25, 3.15], [-71.0, 3.25], [-70.47000000000003, 3.03], [-70.25, 2.5], [-70.35000000000002, 2.25], [-70.25, 2.0], [-70.47000000000003, 1.47], [-70.82, 1.32], [-70.97000000000003, 0.97], [-71.5, 0.75], [-71.75, 0.85], [-72.0, 0.75], [-72.25, 0.85], [-72.5, 0.75], [-72.75, 0.85], [-73.0, 0.75], [-73.52999999999997, 0.97], [-73.75, 1.5], [-73.64999999999998, 1.75], [-73.75, 2.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.158057816233793}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6765559933214942}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.106911681804036, 23.91448401355052, 24.125528956601784, 23.696298652255393]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.381923310589343, 23.352607626203394, 23.573193780775114, 23.22068704646597]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6265843518836354, -1.752312059700632, -1.5652303256750644, -1.7862019199096808]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9522034982094283, -2.124429279053004, -1.8689034874618073, -2.158057816233793]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6827939612693783, -1.8557663020586634, -1.640882117446706, -1.7806126754027514]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9549846375498596, -2.2376201171831642, -1.9484530134794231, -2.0534662837575346]}}