{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:30.388937", "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": "2015-Mar-20_to_2015-Mar-24_324.5_-6.0"}, "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": 2015030000753}, "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": "March 20 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 24 2015"}, "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": 61454.95425554644}, "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": -6.0}, "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": 322.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 325.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -7.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -4.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-03-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-35.0, -6.75], [-34.47, -6.97], [-34.25, -7.5], [-34.47, -8.03], [-35.0, -8.25], [-35.53, -8.03], [-35.75, -7.5], [-35.53, -6.97], [-35.0, -6.75]]]]}, "2015-03-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.03, -4.47], [-36.5, -4.25], [-36.25, -4.35], [-36.0, -4.25], [-35.47, -4.47], [-35.32, -4.82], [-34.97, -4.97], [-34.82, -5.32], [-34.47, -5.47], [-34.25, -6.0], [-34.35, -6.25], [-34.25, -6.5], [-34.35, -6.75], [-34.25, -7.0], [-34.35, -7.25], [-34.25, -7.5], [-34.47, -8.03], [-35.0, -8.25], [-35.25, -8.15], [-35.5, -8.25], [-36.03, -8.03], [-36.18, -7.68], [-36.53, -7.53], [-36.75, -7.0], [-36.65, -6.75], [-36.68, -6.68], [-37.03, -6.53], [-37.25, -6.0], [-37.04, -5.5], [-37.25, -5.0], [-37.03, -4.47]]]]}, "2015-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.53, -4.97], [-37.18, -4.82], [-37.03, -4.47], [-36.5, -4.25], [-36.25, -4.35], [-36.0, -4.25], [-35.47, -4.47], [-35.32, -4.82], [-34.97, -4.97], [-34.82, -5.32], [-34.47, -5.47], [-34.25, -6.0], [-34.35, -6.25], [-34.25, -6.5], [-34.35, -6.75], [-34.25, -7.0], [-34.35, -7.25], [-34.25, -7.5], [-34.47, -8.03], [-35.0, -8.25], [-35.25, -8.15], [-35.5, -8.25], [-36.03, -8.03], [-36.18, -7.68], [-36.53, -7.53], [-36.68, -7.18], [-37.03, -7.03], [-37.18, -6.68], [-37.53, -6.53], [-37.75, -6.0], [-37.65, -5.75], [-37.75, -5.5], [-37.53, -4.97]]]]}, "2015-03-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.53, -4.97], [-37.18, -4.82], [-37.03, -4.47], [-36.5, -4.25], [-36.25, -4.35], [-36.0, -4.25], [-35.47, -4.47], [-35.32, -4.82], [-34.97, -4.97], [-34.82, -5.32], [-34.47, -5.47], [-34.25, -6.0], [-34.35, -6.25], [-34.25, -6.5], [-34.35, -6.75], [-34.25, -7.0], [-34.35, -7.25], [-34.25, -7.5], [-34.47, -8.03], [-35.0, -8.25], [-35.25, -8.15], [-35.5, -8.25], [-36.03, -8.03], [-36.18, -7.68], [-36.53, -7.53], [-36.68, -7.18], [-37.03, -7.03], [-37.18, -6.68], [-37.53, -6.53], [-37.75, -6.0], [-37.65, -5.75], [-37.75, -5.5], [-37.53, -4.97]]]]}, "2015-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-37.53, -4.97], [-37.18, -4.82], [-37.03, -4.47], [-36.5, -4.25], [-36.25, -4.35], [-36.0, -4.25], [-35.47, -4.47], [-35.32, -4.82], [-34.97, -4.97], [-34.75, -5.5], [-34.85, -5.75], [-34.75, -6.0], [-34.97, -6.53], [-35.32, -6.68], [-35.47, -7.03], [-36.0, -7.25], [-36.25, -7.15], [-36.5, -7.25], [-37.03, -7.03], [-37.18, -6.68], [-37.53, -6.53], [-37.75, -6.0], [-37.65, -5.75], [-37.75, -5.5], [-37.53, -4.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.1150997093932915}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.864049253843946}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.827354176435676, 25.05329444637954, 24.416426002664082, 24.933675339587523, 25.378036677937303]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.827354176435676, 23.648359161516055, 22.766244698348032, 22.851420543189192, 24.536291239305456]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0601208058260454, -1.5548217616246163, -2.363152993241022, -1.8302998306354454, -1.567756087156918]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.0601208058260454, -2.2319106214882254, -3.1150997093932915, -2.248198487260879, -1.9886605624020035]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5605770810587887, -1.9593554276612373, -2.688131062480694, -2.0983937313123717, -1.5953904418716238]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5605770810587887, -2.685080480075267, -3.448301368391081, -2.689785153259777, -1.9672717552092769]}}