{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:16:43.912406", "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-Jan-12_to_2022-Jan-16_322.0_-5.5"}, "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": 2022010000534}, "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 12 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 16 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 104382.61185786471}, "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": -5.5}, "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": 322.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "322.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 321.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 324.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -8.0}, "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": [[[[-39.18, -6.32], [-39.15, -6.25], [-39.25, -6.0], [-39.12, -5.7], [-39.53, -5.53], [-39.75, -5.0], [-39.53, -4.47], [-39.0, -4.25], [-38.75, -4.35], [-38.5, -4.25], [-38.25, -4.35], [-38.0, -4.25], [-37.75, -4.35], [-37.5, -4.25], [-36.97, -4.47], [-36.82, -4.82], [-36.47, -4.97], [-36.32, -5.32], [-35.97, -5.47], [-35.75, -6.0], [-35.85, -6.25], [-35.82, -6.32], [-35.47, -6.47], [-35.25, -7.0], [-35.35, -7.25], [-35.25, -7.5], [-35.47, -8.03], [-35.82, -8.18], [-35.97, -8.53], [-36.5, -8.75], [-36.75, -8.65], [-37.0, -8.75], [-37.25, -8.65], [-37.5, -8.75], [-37.75, -8.65], [-38.0, -8.75], [-38.53, -8.53], [-38.68, -8.18], [-39.03, -8.03], [-39.18, -7.68], [-39.53, -7.53], [-39.75, -7.0], [-39.53, -6.47], [-39.18, -6.32]]]]}}, "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": {"2022-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-39.52999999999997, -5.53], [-39.75, -5.0], [-39.52999999999997, -4.47], [-39.0, -4.25], [-38.47000000000003, -4.47], [-38.30000000000001, -4.88], [-38.0, -4.75], [-37.5, -4.96], [-37.0, -4.75], [-36.47000000000003, -4.97], [-36.25, -5.5], [-36.47000000000003, -6.03], [-37.0, -6.25], [-37.30000000000001, -6.12], [-37.47000000000003, -6.53], [-38.0, -6.75], [-38.25, -6.65], [-38.5, -6.75], [-39.02999999999997, -6.53], [-39.25, -6.0], [-39.120000000000005, -5.7], [-39.52999999999997, -5.53]]]]}, "2022-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-39.52999999999997, -7.53], [-39.75, -7.0], [-39.52999999999997, -6.47], [-39.18000000000001, -6.32], [-39.14999999999998, -6.25], [-39.25, -6.0], [-39.120000000000005, -5.7], [-39.52999999999997, -5.53], [-39.75, -5.0], [-39.52999999999997, -4.47], [-39.0, -4.25], [-38.75, -4.35], [-38.5, -4.25], [-38.25, -4.35], [-38.0, -4.25], [-37.47000000000003, -4.47], [-37.31999999999999, -4.82], [-37.25, -4.85], [-37.0, -4.75], [-36.47000000000003, -4.97], [-36.25, -5.5], [-36.35000000000002, -5.75], [-36.25, -6.0], [-36.35000000000002, -6.25], [-36.25, -6.5], [-36.35000000000002, -6.75], [-36.25, -7.0], [-36.47000000000003, -7.53], [-36.81999999999999, -7.68], [-36.85000000000002, -7.75], [-36.75, -8.0], [-36.97000000000003, -8.53], [-37.5, -8.75], [-38.02999999999997, -8.53], [-38.18000000000001, -8.18], [-38.25, -8.15], [-38.5, -8.25], [-39.02999999999997, -8.03], [-39.18000000000001, -7.68], [-39.52999999999997, -7.53]]]]}, "2022-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-39.52999999999997, -7.53], [-39.75, -7.0], [-39.52999999999997, -6.47], [-39.18000000000001, -6.32], [-39.14999999999998, -6.25], [-39.25, -6.0], [-39.120000000000005, -5.7], [-39.52999999999997, -5.53], [-39.75, -5.0], [-39.52999999999997, -4.47], [-39.0, -4.25], [-38.75, -4.35], [-38.5, -4.25], [-38.25, -4.35], [-38.0, -4.25], [-37.75, -4.35], [-37.5, -4.25], [-36.97000000000003, -4.47], [-36.81999999999999, -4.82], [-36.47000000000003, -4.97], [-36.31999999999999, -5.32], [-35.97000000000003, -5.47], [-35.75, -6.0], [-35.85000000000002, -6.25], [-35.81999999999999, -6.32], [-35.47000000000003, -6.47], [-35.25, -7.0], [-35.35000000000002, -7.25], [-35.25, -7.5], [-35.47000000000003, -8.03], [-35.81999999999999, -8.18], [-35.97000000000003, -8.53], [-36.5, -8.75], [-36.75, -8.65], [-37.0, -8.75], [-37.25, -8.65], [-37.5, -8.75], [-37.75, -8.65], [-38.0, -8.75], [-38.52999999999997, -8.53], [-38.68000000000001, -8.18], [-39.02999999999997, -8.03], [-39.18000000000001, -7.68], [-39.52999999999997, -7.53]]]]}, "2022-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-39.52999999999997, -7.53], [-39.75, -7.0], [-39.52999999999997, -6.47], [-39.18000000000001, -6.32], [-39.14999999999998, -6.25], [-39.25, -6.0], [-39.120000000000005, -5.7], [-39.52999999999997, -5.53], [-39.75, -5.0], [-39.52999999999997, -4.47], [-39.0, -4.25], [-38.75, -4.35], [-38.5, -4.25], [-38.25, -4.35], [-38.0, -4.25], [-37.75, -4.35], [-37.5, -4.25], [-36.97000000000003, -4.47], [-36.81999999999999, -4.82], [-36.47000000000003, -4.97], [-36.31999999999999, -5.32], [-35.97000000000003, -5.47], [-35.75, -6.0], [-35.85000000000002, -6.25], [-35.81999999999999, -6.32], [-35.47000000000003, -6.47], [-35.25, -7.0], [-35.35000000000002, -7.25], [-35.25, -7.5], [-35.47000000000003, -8.03], [-35.81999999999999, -8.18], [-35.97000000000003, -8.53], [-36.5, -8.75], [-36.75, -8.65], [-37.0, -8.75], [-37.25, -8.65], [-37.5, -8.75], [-37.75, -8.65], [-38.0, -8.75], [-38.52999999999997, -8.53], [-38.68000000000001, -8.18], [-39.02999999999997, -8.03], [-39.18000000000001, -7.68], [-39.52999999999997, -7.53]]]]}, "2022-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-39.14999999999998, -6.25], [-39.25, -6.0], [-39.120000000000005, -5.7], [-39.52999999999997, -5.53], [-39.75, -5.0], [-39.52999999999997, -4.47], [-39.0, -4.25], [-38.75, -4.35], [-38.5, -4.25], [-38.25, -4.35], [-38.0, -4.25], [-37.75, -4.35], [-37.5, -4.25], [-36.97000000000003, -4.47], [-36.81999999999999, -4.82], [-36.47000000000003, -4.97], [-36.31999999999999, -5.32], [-35.97000000000003, -5.47], [-35.75, -6.0], [-35.85000000000002, -6.25], [-35.81999999999999, -6.32], [-35.47000000000003, -6.47], [-35.25, -7.0], [-35.35000000000002, -7.25], [-35.25, -7.5], [-35.47000000000003, -8.03], [-35.81999999999999, -8.18], [-35.97000000000003, -8.53], [-36.5, -8.75], [-36.75, -8.65], [-37.0, -8.75], [-37.25, -8.65], [-37.5, -8.75], [-37.75, -8.65], [-38.0, -8.75], [-38.52999999999997, -8.53], [-38.75, -8.0], [-38.620000000000005, -7.7], [-38.75, -7.65], [-39.0, -7.75], [-39.52999999999997, -7.53], [-39.75, -7.0], [-39.52999999999997, -6.47], [-39.18000000000001, -6.32], [-39.14999999999998, -6.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.1981643126911194}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.1128845504011964}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.50998929564588, 26.143703430424694, 25.983876222866968, 25.29967755596317, 25.713601803748816]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.781721271952335, 24.635476353198385, 23.838065014590143, 22.85390438560097, 23.8840069662877]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.975008074379275, -2.3081569601594256, -1.818375975427756, -2.4664457636835277, -1.9254757521162944]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.359727044243755, -3.122276016032572, -2.6485940199253832, -3.1981643126911194, -3.049925969173728]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6218655518124812, -1.9299023790091951, -1.7113168595875812, -2.312056898836383, -1.7497140595851142]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7748468422418704, -2.3865600838060232, -2.0937512479662135, -2.997347334511527, -2.1985153946348728]}}