{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:52:20.704304", "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-Apr-07_to_2023-Apr-09_286.0_-7.0"}, "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": 2023040000371}, "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 07 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 09 2023"}, "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": 104273.32135904348}, "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", "Peru"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": -7.0}, "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": 286.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "286.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 285.5}, "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": -8.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -5.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-74.68, -6.32], [-74.54, -6.0], [-74.75, -5.5], [-74.65, -5.25], [-74.75, -5.0], [-74.53, -4.47], [-74.0, -4.25], [-73.75, -4.35], [-73.5, -4.25], [-72.97, -4.47], [-72.82, -4.82], [-72.75, -4.85], [-72.5, -4.75], [-71.97, -4.97], [-71.75, -5.5], [-71.85, -5.75], [-71.75, -6.0], [-71.96, -6.5], [-71.82, -6.82], [-71.75, -6.85], [-71.5, -6.75], [-71.25, -6.85], [-71.0, -6.75], [-70.47, -6.97], [-70.25, -7.5], [-70.35, -7.75], [-70.25, -8.0], [-70.47, -8.53], [-70.82, -8.68], [-70.97, -9.03], [-71.5, -9.25], [-71.75, -9.15], [-72.0, -9.25], [-72.25, -9.15], [-72.5, -9.25], [-72.75, -9.15], [-73.0, -9.25], [-73.53, -9.03], [-73.68, -8.68], [-73.75, -8.65], [-74.0, -8.75], [-74.53, -8.53], [-74.68, -8.18], [-75.03, -8.03], [-75.25, -7.5], [-75.15, -7.25], [-75.25, -7.0], [-75.03, -6.47], [-74.68, -6.32]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.South-America", "N.South-America", "South-American-Monsoon"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.25, -7.0], [-75.02999999999997, -6.47], [-74.68, -6.32], [-74.54000000000002, -6.0], [-74.75, -5.5], [-74.64999999999998, -5.25], [-74.75, -5.0], [-74.52999999999997, -4.47], [-74.0, -4.25], [-73.75, -4.35], [-73.5, -4.25], [-72.97000000000003, -4.47], [-72.82, -4.82], [-72.75, -4.85], [-72.5, -4.75], [-71.97000000000003, -4.97], [-71.75, -5.5], [-71.85000000000002, -5.75], [-71.75, -6.0], [-71.95999999999998, -6.5], [-71.82, -6.82], [-71.75, -6.85], [-71.5, -6.75], [-71.25, -6.85], [-71.0, -6.75], [-70.47000000000003, -6.97], [-70.25, -7.5], [-70.35000000000002, -7.75], [-70.25, -8.0], [-70.47000000000003, -8.53], [-70.82, -8.68], [-70.97000000000003, -9.03], [-71.5, -9.25], [-71.75, -9.15], [-72.0, -9.25], [-72.25, -9.15], [-72.5, -9.25], [-72.75, -9.15], [-73.0, -9.25], [-73.52999999999997, -9.03], [-73.68, -8.68], [-73.75, -8.65], [-74.0, -8.75], [-74.52999999999997, -8.53], [-74.68, -8.18], [-75.02999999999997, -8.03], [-75.25, -7.5], [-75.14999999999998, -7.25], [-75.25, -7.0]]]]}, "2023-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.25, -7.0], [-75.02999999999997, -6.47], [-74.68, -6.32], [-74.54000000000002, -6.0], [-74.75, -5.5], [-74.64999999999998, -5.25], [-74.75, -5.0], [-74.52999999999997, -4.47], [-74.0, -4.25], [-73.75, -4.35], [-73.5, -4.25], [-72.97000000000003, -4.47], [-72.82, -4.82], [-72.75, -4.85], [-72.5, -4.75], [-71.97000000000003, -4.97], [-71.75, -5.5], [-71.85000000000002, -5.75], [-71.75, -6.0], [-71.95999999999998, -6.5], [-71.82, -6.82], [-71.75, -6.85], [-71.5, -6.75], [-71.25, -6.85], [-71.0, -6.75], [-70.47000000000003, -6.97], [-70.25, -7.5], [-70.35000000000002, -7.75], [-70.25, -8.0], [-70.47000000000003, -8.53], [-70.82, -8.68], [-70.97000000000003, -9.03], [-71.5, -9.25], [-71.75, -9.15], [-72.0, -9.25], [-72.25, -9.15], [-72.5, -9.25], [-72.75, -9.15], [-73.0, -9.25], [-73.52999999999997, -9.03], [-73.68, -8.68], [-73.75, -8.65], [-74.0, -8.75], [-74.52999999999997, -8.53], [-74.68, -8.18], [-75.02999999999997, -8.03], [-75.25, -7.5], [-75.14999999999998, -7.25], [-75.25, -7.0]]]]}, "2023-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.25, -7.0], [-75.02999999999997, -6.47], [-74.68, -6.32], [-74.54000000000002, -6.0], [-74.75, -5.5], [-74.64999999999998, -5.25], [-74.75, -5.0], [-74.52999999999997, -4.47], [-74.0, -4.25], [-73.75, -4.35], [-73.5, -4.25], [-72.97000000000003, -4.47], [-72.82, -4.82], [-72.75, -4.85], [-72.5, -4.75], [-71.97000000000003, -4.97], [-71.75, -5.5], [-71.85000000000002, -5.75], [-71.75, -6.0], [-71.95999999999998, -6.5], [-71.82, -6.82], [-71.75, -6.85], [-71.5, -6.75], [-71.25, -6.85], [-71.0, -6.75], [-70.47000000000003, -6.97], [-70.25, -7.5], [-70.35000000000002, -7.75], [-70.25, -8.0], [-70.47000000000003, -8.53], [-70.82, -8.68], [-70.97000000000003, -9.03], [-71.5, -9.25], [-71.75, -9.15], [-72.0, -9.25], [-72.25, -9.15], [-72.5, -9.25], [-72.75, -9.15], [-73.0, -9.25], [-73.52999999999997, -9.03], [-73.68, -8.68], [-73.75, -8.65], [-74.0, -8.75], [-74.52999999999997, -8.53], [-74.68, -8.18], [-75.02999999999997, -8.03], [-75.25, -7.5], [-75.14999999999998, -7.25], [-75.25, -7.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.309369032470272}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5955348584897555}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.125420794646516, 23.776430090369217, 24.06348108742702]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.624260228093476, 23.06372550432428, 23.367883059644953]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4721474362741542, -1.8184719443142716, -1.4959851948808407]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9551549349264405, -2.309369032470272, -1.9798237570635138]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5201760546916003, -1.8274972541741046, -1.4984473631500497]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9768573284032596, -2.208286742807281, -1.8972682566155432]}}