{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:42.042798", "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": "2018-May-23_to_2018-May-28_295.0_4.5"}, "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": 2018050000927}, "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 23 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 28 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 52382.81496392543}, "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", "Venezuela"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.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": []}, "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": 4.5}, "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": 295.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "295.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 293.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 296.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 3.25}, "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": {"2018-05-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.0, 5.25], [-64.47, 5.03], [-64.25, 4.5], [-64.47, 3.97], [-65.0, 3.75], [-65.53, 3.97], [-65.75, 4.5], [-65.53, 5.03], [-65.0, 5.25]]]]}, "2018-05-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.75, 4.5], [-66.53, 5.03], [-66.0, 5.25], [-65.75, 5.15], [-65.5, 5.25], [-65.25, 5.15], [-65.0, 5.25], [-64.47, 5.03], [-64.25, 4.5], [-64.47, 3.97], [-64.82, 3.82], [-64.97, 3.47], [-65.5, 3.25], [-66.03, 3.47], [-66.18, 3.82], [-66.53, 3.97], [-66.75, 4.5]]]]}, "2018-05-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.75, 4.5], [-66.53, 5.03], [-66.18, 5.18], [-66.15, 5.25], [-66.25, 5.5], [-66.03, 6.03], [-65.5, 6.25], [-65.25, 6.15], [-65.0, 6.25], [-64.75, 6.15], [-64.5, 6.25], [-63.97, 6.03], [-63.75, 5.5], [-63.85, 5.25], [-63.75, 5.0], [-63.97, 4.47], [-64.32, 4.32], [-64.47, 3.97], [-64.82, 3.82], [-64.97, 3.47], [-65.5, 3.25], [-66.03, 3.47], [-66.18, 3.82], [-66.53, 3.97], [-66.75, 4.5]]]]}, "2018-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.75, 4.5], [-66.53, 5.03], [-66.18, 5.18], [-66.15, 5.25], [-66.25, 5.5], [-66.03, 6.03], [-65.5, 6.25], [-65.25, 6.15], [-65.0, 6.25], [-64.75, 6.15], [-64.5, 6.25], [-63.97, 6.03], [-63.75, 5.5], [-63.85, 5.25], [-63.82, 5.18], [-63.47, 5.03], [-63.25, 4.5], [-63.35, 4.25], [-63.32, 4.18], [-62.97, 4.03], [-62.75, 3.5], [-62.97, 2.97], [-63.5, 2.75], [-63.75, 2.85], [-64.0, 2.75], [-64.25, 2.85], [-64.5, 2.75], [-65.03, 2.97], [-65.2, 3.38], [-65.5, 3.25], [-66.03, 3.47], [-66.18, 3.82], [-66.53, 3.97], [-66.75, 4.5]]]]}, "2018-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.03, 6.03], [-65.5, 6.25], [-65.25, 6.15], [-65.0, 6.25], [-64.75, 6.15], [-64.5, 6.25], [-63.97, 6.03], [-63.75, 5.5], [-63.85, 5.25], [-63.82, 5.18], [-63.47, 5.03], [-63.25, 4.5], [-63.35, 4.25], [-63.32, 4.18], [-62.97, 4.03], [-62.75, 3.5], [-62.97, 2.97], [-63.5, 2.75], [-63.75, 2.85], [-64.0, 2.75], [-64.25, 2.85], [-64.5, 2.75], [-65.03, 2.97], [-65.25, 3.5], [-65.15, 3.75], [-65.18, 3.82], [-65.53, 3.97], [-65.68, 4.32], [-66.03, 4.47], [-66.25, 5.0], [-66.15, 5.25], [-66.25, 5.5], [-66.03, 6.03]]]]}, "2018-05-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.15, 4.25], [-65.25, 4.5], [-65.03, 5.03], [-64.5, 5.25], [-64.25, 5.15], [-64.0, 5.25], [-63.47, 5.03], [-63.25, 4.5], [-63.35, 4.25], [-63.32, 4.18], [-62.97, 4.03], [-62.75, 3.5], [-62.97, 2.97], [-63.5, 2.75], [-63.75, 2.85], [-64.0, 2.75], [-64.25, 2.85], [-64.5, 2.75], [-65.03, 2.97], [-65.25, 3.5], [-65.15, 3.75], [-65.25, 4.0], [-65.15, 4.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.7408030774976737}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.302914034849872}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.036455052087206, 21.637129887663946, 21.56906626730961, 21.24204286907309, 20.99418244593744, 20.83294361236858]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.036455052087206, 20.63723876888946, 20.396764108359605, 19.492818757055886, 19.39927458655518, 19.618252985681863]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9790769527366479, -1.0240517612083408, -1.332874002618911, -1.308104910364942, -1.4412573168733778, -1.1764334158361132]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.9790769527366479, -1.1080542906731807, -1.549918662911864, -1.6002062333899403, -1.7408030774976737, -1.4901379987782661]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.309399153030604, -1.3540964749358875, -1.720881571558659, -1.7636253422430554, -1.9587351792198129, -1.7202774310323865]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.309399153030604, -1.455027985286351, -1.9513449801787957, -2.2038761157631983, -2.389167260926129, -2.068288202374193]}}