{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:20.271265", "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": "2012-Jan-16_to_2012-Jan-31_324.5_-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": 2012010000840}, "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 16 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 31 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 16}, "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": 162012.81633264045}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South 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": ["South 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": -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": 324.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "324.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 322.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 326.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -11.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -5.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-36.53, -7.53], [-36.75, -7.0], [-36.53, -6.47], [-36.0, -6.25], [-35.75, -6.35], [-35.5, -6.25], [-34.97, -6.47], [-34.75, -7.0], [-34.97, -7.53], [-35.5, -7.75], [-35.75, -7.65], [-36.0, -7.75], [-36.53, -7.53]]]]}, "2012-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-35.53, -9.53], [-35.75, -9.0], [-35.53, -8.47], [-35.0, -8.25], [-34.47, -8.47], [-34.25, -9.0], [-34.47, -9.53], [-35.0, -9.75], [-35.53, -9.53]]], [[[-36.75, -7.0], [-36.53, -6.47], [-36.0, -6.25], [-35.75, -6.35], [-35.5, -6.25], [-34.97, -6.47], [-34.75, -7.0], [-34.97, -7.53], [-35.5, -7.75], [-35.75, -7.65], [-36.0, -7.75], [-36.53, -7.53], [-36.75, -7.0]]]]}, "2012-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-35.53, -9.53], [-35.75, -9.0], [-35.53, -8.47], [-35.0, -8.25], [-34.47, -8.47], [-34.25, -9.0], [-34.47, -9.53], [-35.0, -9.75], [-35.53, -9.53]]], [[[-36.0, -6.25], [-35.75, -6.35], [-35.5, -6.25], [-34.97, -6.47], [-34.75, -7.0], [-34.85, -7.25], [-34.75, -7.5], [-34.97, -8.03], [-35.5, -8.25], [-35.75, -8.15], [-36.0, -8.25], [-36.53, -8.03], [-36.75, -7.5], [-36.65, -7.25], [-36.75, -7.0], [-36.53, -6.47], [-36.0, -6.25]]]]}, "2012-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-36.53, -6.47], [-36.0, -6.25], [-35.75, -6.35], [-35.5, -6.25], [-35.25, -6.35], [-35.0, -6.25], [-34.47, -6.47], [-34.25, -7.0], [-34.35, -7.25], [-34.25, -7.5], [-34.35, -7.75], [-34.25, -8.0], [-34.35, -8.25], [-34.32, -8.32], [-33.97, -8.47], [-33.82, -8.82], [-33.47, -8.97], [-33.25, -9.5], [-33.47, -10.03], [-33.82, -10.18], [-33.97, -10.53], [-34.5, -10.75], [-35.03, -10.53], [-35.25, -10.0], [-35.15, -9.75], [-35.18, -9.68], [-35.53, -9.53], [-35.75, -9.0], [-35.65, -8.75], [-35.75, -8.5], [-35.65, -8.25], [-35.68, -8.18], [-35.75, -8.15], [-36.0, -8.25], [-36.53, -8.03], [-36.75, -7.5], [-36.65, -7.25], [-36.75, -7.0], [-36.53, -6.47]]]]}, "2012-01-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.15, -9.25], [-37.25, -9.0], [-37.15, -8.75], [-37.25, -8.5], [-37.15, -8.25], [-37.25, -8.0], [-37.15, -7.75], [-37.25, -7.5], [-37.15, -7.25], [-37.25, -7.0], [-37.03, -6.47], [-36.68, -6.32], [-36.53, -5.97], [-36.0, -5.75], [-35.75, -5.85], [-35.5, -5.75], [-34.97, -5.97], [-34.82, -6.32], [-34.47, -6.47], [-34.25, -7.0], [-34.35, -7.25], [-34.25, -7.5], [-34.35, -7.75], [-34.25, -8.0], [-34.35, -8.25], [-34.32, -8.32], [-33.97, -8.47], [-33.82, -8.82], [-33.47, -8.97], [-33.25, -9.5], [-33.47, -10.03], [-33.82, -10.18], [-33.97, -10.53], [-34.5, -10.75], [-35.03, -10.53], [-35.2, -10.12], [-35.32, -10.18], [-35.35, -10.25], [-35.25, -10.5], [-35.47, -11.03], [-35.82, -11.18], [-35.97, -11.53], [-36.5, -11.75], [-36.75, -11.65], [-37.0, -11.75], [-37.53, -11.53], [-37.75, -11.0], [-37.53, -10.47], [-37.12, -10.3], [-37.25, -10.0], [-37.15, -9.75], [-37.25, -9.5], [-37.15, -9.25]]]]}, "2012-01-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-38.03, -8.47], [-37.68, -8.32], [-37.65, -8.25], [-37.75, -8.0], [-37.53, -7.47], [-37.18, -7.32], [-37.15, -7.25], [-37.25, -7.0], [-37.03, -6.47], [-36.68, -6.32], [-36.53, -5.97], [-36.0, -5.75], [-35.75, -5.85], [-35.5, -5.75], [-34.97, -5.97], [-34.82, -6.32], [-34.47, -6.47], [-34.25, -7.0], [-34.35, -7.25], [-34.25, -7.5], [-34.35, -7.75], [-34.25, -8.0], [-34.35, -8.25], [-34.32, -8.32], [-33.97, -8.47], [-33.82, -8.82], [-33.47, -8.97], [-33.25, -9.5], [-33.47, -10.03], [-33.82, -10.18], [-33.97, -10.53], [-34.5, -10.75], [-35.03, -10.53], [-35.2, -10.12], [-35.32, -10.18], [-35.35, -10.25], [-35.25, -10.5], [-35.47, -11.03], [-35.82, -11.18], [-35.97, -11.53], [-36.5, -11.75], [-36.75, -11.65], [-37.0, -11.75], [-37.53, -11.53], [-37.75, -11.0], [-37.65, -10.75], [-37.75, -10.5], [-37.65, -10.25], [-37.68, -10.18], [-38.03, -10.03], [-38.25, -9.5], [-38.15, -9.25], [-38.25, -9.0], [-38.03, -8.47]]]]}, "2012-01-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-38.15, -8.75], [-38.25, -8.5], [-38.15, -8.25], [-38.25, -8.0], [-38.03, -7.47], [-37.68, -7.32], [-37.65, -7.25], [-37.75, -7.0], [-37.53, -6.47], [-37.18, -6.32], [-37.03, -5.97], [-36.68, -5.82], [-36.53, -5.47], [-36.0, -5.25], [-35.75, -5.35], [-35.5, -5.25], [-34.97, -5.47], [-34.82, -5.82], [-34.47, -5.97], [-34.32, -6.32], [-33.97, -6.47], [-33.75, -7.0], [-33.85, -7.25], [-33.75, -7.5], [-33.97, -8.03], [-34.32, -8.18], [-34.35, -8.25], [-34.25, -8.5], [-34.47, -9.03], [-34.82, -9.18], [-34.85, -9.25], [-34.75, -9.5], [-34.97, -10.03], [-35.32, -10.18], [-35.35, -10.25], [-35.25, -10.5], [-35.47, -11.03], [-35.82, -11.18], [-35.97, -11.53], [-36.5, -11.75], [-36.75, -11.65], [-37.0, -11.75], [-37.53, -11.53], [-37.75, -11.0], [-37.65, -10.75], [-37.75, -10.5], [-37.65, -10.25], [-37.68, -10.18], [-38.03, -10.03], [-38.25, -9.5], [-38.15, -9.25], [-38.25, -9.0], [-38.15, -8.75]]]]}, "2012-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-38.15, -8.75], [-38.25, -8.5], [-38.15, -8.25], [-38.25, -8.0], [-38.03, -7.47], [-37.68, -7.32], [-37.65, -7.25], [-37.75, -7.0], [-37.53, -6.47], [-37.18, -6.32], [-37.03, -5.97], [-36.68, -5.82], [-36.53, -5.47], [-36.0, -5.25], [-35.75, -5.35], [-35.5, -5.25], [-34.97, -5.47], [-34.82, -5.82], [-34.47, -5.97], [-34.32, -6.32], [-33.97, -6.47], [-33.75, -7.0], [-33.85, -7.25], [-33.75, -7.5], [-33.97, -8.03], [-34.32, -8.18], [-34.35, -8.25], [-34.25, -8.5], [-34.47, -9.03], [-34.82, -9.18], [-34.97, -9.53], [-35.32, -9.68], [-35.35, -9.75], [-35.25, -10.0], [-35.47, -10.53], [-35.82, -10.68], [-35.97, -11.03], [-36.5, -11.25], [-36.75, -11.15], [-37.0, -11.25], [-37.53, -11.03], [-37.75, -10.5], [-37.65, -10.25], [-37.68, -10.18], [-38.03, -10.03], [-38.25, -9.5], [-38.15, -9.25], [-38.25, -9.0], [-38.15, -8.75]]]]}, "2012-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-38.15, -8.25], [-38.25, -8.0], [-38.03, -7.47], [-37.68, -7.32], [-37.65, -7.25], [-37.75, -7.0], [-37.53, -6.47], [-37.18, -6.32], [-37.03, -5.97], [-36.68, -5.82], [-36.53, -5.47], [-36.0, -5.25], [-35.75, -5.35], [-35.5, -5.25], [-34.97, -5.47], [-34.82, -5.82], [-34.47, -5.97], [-34.32, -6.32], [-33.97, -6.47], [-33.75, -7.0], [-33.85, -7.25], [-33.75, -7.5], [-33.97, -8.03], [-34.32, -8.18], [-34.35, -8.25], [-34.25, -8.5], [-34.47, -9.03], [-34.82, -9.18], [-34.97, -9.53], [-35.32, -9.68], [-35.35, -9.75], [-35.25, -10.0], [-35.47, -10.53], [-35.82, -10.68], [-35.97, -11.03], [-36.5, -11.25], [-37.03, -11.03], [-37.18, -10.68], [-37.53, -10.53], [-37.75, -10.0], [-37.65, -9.75], [-37.68, -9.68], [-38.03, -9.53], [-38.25, -9.0], [-38.15, -8.75], [-38.25, -8.5], [-38.15, -8.25]]]]}, "2012-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.15, -9.75], [-37.25, -9.5], [-37.15, -9.25], [-37.25, -9.0], [-37.15, -8.75], [-37.25, -8.5], [-37.15, -8.25], [-37.25, -8.0], [-37.15, -7.75], [-37.25, -7.5], [-37.15, -7.25], [-37.25, -7.0], [-37.03, -6.47], [-36.5, -6.25], [-36.25, -6.35], [-36.18, -6.32], [-36.03, -5.97], [-35.5, -5.75], [-34.97, -5.97], [-34.75, -6.5], [-34.85, -6.75], [-34.82, -6.82], [-34.47, -6.97], [-34.25, -7.5], [-34.35, -7.75], [-34.25, -8.0], [-34.35, -8.25], [-34.25, -8.5], [-34.47, -9.03], [-34.82, -9.18], [-34.97, -9.53], [-35.32, -9.68], [-35.35, -9.75], [-35.25, -10.0], [-35.47, -10.53], [-35.82, -10.68], [-35.97, -11.03], [-36.5, -11.25], [-37.03, -11.03], [-37.25, -10.5], [-37.15, -10.25], [-37.25, -10.0], [-37.15, -9.75]]]]}, "2012-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.15, -9.75], [-37.25, -9.5], [-37.15, -9.25], [-37.25, -9.0], [-37.03, -8.47], [-36.68, -8.32], [-36.53, -7.97], [-36.0, -7.75], [-35.75, -7.85], [-35.68, -7.82], [-35.53, -7.47], [-35.0, -7.25], [-34.47, -7.47], [-34.25, -8.0], [-34.47, -8.53], [-34.82, -8.68], [-34.85, -8.75], [-34.75, -9.0], [-34.97, -9.53], [-35.32, -9.68], [-35.35, -9.75], [-35.25, -10.0], [-35.47, -10.53], [-35.82, -10.68], [-35.97, -11.03], [-36.5, -11.25], [-37.03, -11.03], [-37.25, -10.5], [-37.15, -10.25], [-37.25, -10.0], [-37.15, -9.75]]]]}, "2012-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.15, -8.75], [-37.25, -8.5], [-37.03, -7.97], [-36.5, -7.75], [-36.25, -7.85], [-36.18, -7.82], [-36.15, -7.75], [-36.18, -7.68], [-36.53, -7.53], [-36.75, -7.0], [-36.53, -6.47], [-36.0, -6.25], [-35.75, -6.35], [-35.5, -6.25], [-34.97, -6.47], [-34.82, -6.82], [-34.47, -6.97], [-34.25, -7.5], [-34.35, -7.75], [-34.25, -8.0], [-34.47, -8.53], [-34.82, -8.68], [-34.85, -8.75], [-34.75, -9.0], [-34.97, -9.53], [-35.32, -9.68], [-35.47, -10.03], [-36.0, -10.25], [-36.25, -10.15], [-36.5, -10.25], [-37.03, -10.03], [-37.25, -9.5], [-37.15, -9.25], [-37.25, -9.0], [-37.15, -8.75]]]]}, "2012-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.15, -8.75], [-37.25, -8.5], [-37.03, -7.97], [-36.5, -7.75], [-36.25, -7.85], [-36.18, -7.82], [-36.15, -7.75], [-36.18, -7.68], [-36.53, -7.53], [-36.75, -7.0], [-36.53, -6.47], [-36.0, -6.25], [-35.75, -6.35], [-35.5, -6.25], [-34.97, -6.47], [-34.82, -6.82], [-34.47, -6.97], [-34.25, -7.5], [-34.35, -7.75], [-34.25, -8.0], [-34.47, -8.53], [-34.82, -8.68], [-34.85, -8.75], [-34.75, -9.0], [-34.97, -9.53], [-35.32, -9.68], [-35.47, -10.03], [-36.0, -10.25], [-36.25, -10.15], [-36.5, -10.25], [-37.03, -10.03], [-37.25, -9.5], [-37.15, -9.25], [-37.25, -9.0], [-37.15, -8.75]]]]}, "2012-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.15, -8.75], [-37.25, -8.5], [-37.15, -8.25], [-37.25, -8.0], [-37.03, -7.47], [-36.62, -7.3], [-36.75, -7.0], [-36.53, -6.47], [-36.0, -6.25], [-35.75, -6.35], [-35.5, -6.25], [-34.97, -6.47], [-34.82, -6.82], [-34.47, -6.97], [-34.25, -7.5], [-34.35, -7.75], [-34.25, -8.0], [-34.47, -8.53], [-34.82, -8.68], [-34.85, -8.75], [-34.75, -9.0], [-34.97, -9.53], [-35.32, -9.68], [-35.47, -10.03], [-36.0, -10.25], [-36.25, -10.15], [-36.5, -10.25], [-37.03, -10.03], [-37.25, -9.5], [-37.15, -9.25], [-37.25, -9.0], [-37.15, -8.75]]]]}, "2012-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.25, -8.0], [-37.03, -7.47], [-36.62, -7.3], [-36.75, -7.0], [-36.53, -6.47], [-36.0, -6.25], [-35.75, -6.35], [-35.5, -6.25], [-34.97, -6.47], [-34.82, -6.82], [-34.47, -6.97], [-34.25, -7.5], [-34.35, -7.75], [-34.25, -8.0], [-34.47, -8.53], [-34.82, -8.68], [-34.85, -8.75], [-34.75, -9.0], [-34.97, -9.53], [-35.32, -9.68], [-35.47, -10.03], [-36.0, -10.25], [-36.53, -10.03], [-36.75, -9.5], [-36.65, -9.25], [-36.75, -9.0], [-36.65, -8.75], [-36.68, -8.68], [-37.03, -8.53], [-37.25, -8.0]]]]}, "2012-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.03, -8.53], [-37.25, -8.0], [-37.03, -7.47], [-36.5, -7.25], [-36.25, -7.35], [-36.12, -7.3], [-36.25, -7.0], [-36.03, -6.47], [-35.5, -6.25], [-34.97, -6.47], [-34.75, -7.0], [-34.97, -7.53], [-35.37, -7.7], [-35.25, -8.0], [-35.47, -8.53], [-36.0, -8.75], [-36.25, -8.65], [-36.5, -8.75], [-37.03, -8.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.016820695041929}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9393238999724949}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.37406502314286, 24.857393992508264, 24.844598092264846, 25.320543955576852, 24.33061328762085, 23.99005604599182, 23.586078186712086, 23.814152337937742, 23.78123493875097, 24.197960055185206, 24.587276078738967, 24.134640218390985, 24.21358059079904, 23.84741914973631, 24.48901757072025, 24.568139885790117]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.569992905590937, 23.67988187150678, 23.52212511181108, 23.473522944625927, 22.099577064584594, 20.86262520523536, 20.26431116359646, 20.865295653981775, 21.12419565994884, 22.09563815268359, 22.343255512696942, 21.908372934339752, 22.199585370138664, 22.027608470868188, 23.149196944371283, 23.77715296709573]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1180986743658536, -0.9314192026213656, -0.9759321622022185, -0.9726959720166388, -1.6138205020356324, -2.1499994180463973, -2.604799597720549, -2.3819239602096656, -2.3633185967489165, -1.6381664817331558, -1.3551694735279873, -1.390177645316539, -1.3167792531490892, -1.6791260163669577, -1.2689027869930407, -1.1953675989837507]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.180288096739389, -1.0421415889475725, -1.1611523545838054, -1.2314054689662726, -2.116587721835174, -3.2731133651816435, -4.016820695041929, -3.2277027165901586, -2.94966655295309, -2.120614623901588, -1.5539370719765202, -1.8859909220371378, -1.5742861229455798, -2.1172042948356307, -1.6021348822828259, -1.5746128389686191]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.74970552674879, -1.5493355434784926, -1.5089229628321437, -1.5798794296209329, -2.2114745362080885, -2.5579635037240656, -2.878946908809937, -2.6087658947989802, -2.5827411307339596, -1.9175197676277616, -1.6221790216315422, -1.6983676436806845, -1.6818038669705448, -2.172957344300388, -1.7442694556658376, -1.4490271920276072]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.763169792521145, -1.7488107649510476, -1.6508378748890298, -1.952175877537423, -3.126773380706106, -3.970390635858957, -4.448049778329345, -3.870386709556546, -3.8304827682039906, -2.6232150445249913, -1.9131490884971585, -1.9545345803850604, -2.1312832134041075, -2.6368858928784635, -2.06050823577903, -1.6412175590052829]}}