{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:45.007580", "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": "2014-Feb-25_to_2014-Mar-04_322.0_-12.5"}, "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": 2014020001064}, "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": "February 25 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 04 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 74938.70722522578}, "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": -12.5}, "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": 319.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 323.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -16.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -12.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-38.5, -12.25], [-37.97, -12.47], [-37.75, -13.0], [-37.97, -13.53], [-38.5, -13.75], [-39.03, -13.53], [-39.25, -13.0], [-39.03, -12.47], [-38.5, -12.25]]]]}, "2014-02-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.25, -13.5], [-40.03, -12.97], [-39.5, -12.75], [-39.25, -12.85], [-39.18, -12.82], [-39.03, -12.47], [-38.5, -12.25], [-37.97, -12.47], [-37.75, -13.0], [-37.97, -13.53], [-38.32, -13.68], [-38.35, -13.75], [-38.25, -14.0], [-38.47, -14.53], [-39.0, -14.75], [-39.53, -14.53], [-39.68, -14.18], [-40.03, -14.03], [-40.25, -13.5]]]]}, "2014-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.53, -14.47], [-40.18, -14.32], [-40.04, -14.0], [-40.25, -13.5], [-40.03, -12.97], [-39.68, -12.82], [-39.53, -12.47], [-39.0, -12.25], [-38.75, -12.35], [-38.68, -12.32], [-38.53, -11.97], [-38.0, -11.75], [-37.47, -11.97], [-37.32, -12.32], [-36.97, -12.47], [-36.82, -12.82], [-36.47, -12.97], [-36.25, -13.5], [-36.47, -14.03], [-36.82, -14.18], [-36.97, -14.53], [-37.32, -14.68], [-37.47, -15.03], [-38.0, -15.25], [-38.3, -15.12], [-38.35, -15.25], [-38.25, -15.5], [-38.47, -16.03], [-38.82, -16.18], [-38.97, -16.53], [-39.5, -16.75], [-40.03, -16.53], [-40.18, -16.18], [-40.53, -16.03], [-40.75, -15.5], [-40.65, -15.25], [-40.75, -15.0], [-40.53, -14.47]]]]}, "2014-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.53, -14.47], [-40.18, -14.32], [-40.04, -14.0], [-40.25, -13.5], [-40.03, -12.97], [-39.68, -12.82], [-39.53, -12.47], [-39.0, -12.25], [-38.75, -12.35], [-38.68, -12.32], [-38.53, -11.97], [-38.0, -11.75], [-37.47, -11.97], [-37.32, -12.32], [-36.97, -12.47], [-36.82, -12.82], [-36.47, -12.97], [-36.25, -13.5], [-36.47, -14.03], [-36.82, -14.18], [-36.97, -14.53], [-37.32, -14.68], [-37.47, -15.03], [-38.0, -15.25], [-38.3, -15.12], [-38.35, -15.25], [-38.25, -15.5], [-38.47, -16.03], [-38.82, -16.18], [-38.97, -16.53], [-39.5, -16.75], [-40.03, -16.53], [-40.18, -16.18], [-40.53, -16.03], [-40.75, -15.5], [-40.65, -15.25], [-40.75, -15.0], [-40.53, -14.47]]]]}, "2014-03-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-40.53, -14.47], [-40.18, -14.32], [-40.03, -13.97], [-39.68, -13.82], [-39.65, -13.75], [-39.75, -13.5], [-39.65, -13.25], [-39.75, -13.0], [-39.53, -12.47], [-39.0, -12.25], [-38.75, -12.35], [-38.68, -12.32], [-38.53, -11.97], [-38.0, -11.75], [-37.47, -11.97], [-37.32, -12.32], [-36.97, -12.47], [-36.82, -12.82], [-36.47, -12.97], [-36.25, -13.5], [-36.47, -14.03], [-36.82, -14.18], [-36.97, -14.53], [-37.32, -14.68], [-37.47, -15.03], [-38.0, -15.25], [-38.3, -15.12], [-38.35, -15.25], [-38.25, -15.5], [-38.47, -16.03], [-38.82, -16.18], [-38.97, -16.53], [-39.5, -16.75], [-40.03, -16.53], [-40.18, -16.18], [-40.53, -16.03], [-40.75, -15.5], [-40.65, -15.25], [-40.75, -15.0], [-40.53, -14.47]]]]}, "2014-03-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-38.0, -11.75], [-37.47, -11.97], [-37.25, -12.5], [-37.47, -13.03], [-38.0, -13.25], [-38.53, -13.03], [-38.75, -12.5], [-38.53, -11.97], [-38.0, -11.75]]]]}, "2014-03-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-38.0, -11.75], [-37.47, -11.97], [-37.25, -12.5], [-37.47, -13.03], [-38.0, -13.25], [-38.53, -13.03], [-38.75, -12.5], [-38.53, -11.97], [-38.0, -11.75]]]]}, "2014-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-38.0, -11.75], [-37.47, -11.97], [-37.25, -12.5], [-37.47, -13.03], [-38.0, -13.25], [-38.53, -13.03], [-38.75, -12.5], [-38.53, -11.97], [-38.0, -11.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.6719209678734614}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.565959579862775}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.548302224717816, 25.0085754944638, 24.92820415787395, 24.92171151175245, 25.025436187698006, 25.949398846870054, 26.005759502779938, 26.106923503001667]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.548302224717816, 23.634945274416964, 23.3656433802596, 23.37816588430934, 23.384276051928907, 25.949398846870054, 26.005759502779938, 26.106923503001667]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.284105204553498, -1.2623658892149052, -1.5931282691031128, -1.6027268280949238, -1.5425964106589756, -1.7948980692584655, -1.7339863353683995, -1.6275410969412292]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.284105204553498, -1.5023570454878268, -2.08466565085331, -2.0943982730428843, -2.6719209678734614, -1.7948980692584655, -1.7339863353683995, -1.6275410969412292]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6716757600293994, -1.4894027171773954, -1.893269519441153, -1.927954178793601, -1.854445347969133, -1.8477144669876688, -1.8006349523751912, -1.7089906614600645]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6716757600293994, -1.6114269800070478, -2.4541641849300637, -2.215318347498704, -2.3697900727332124, -1.8477144669876688, -1.8006349523751912, -1.7089906614600645]}}