{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:10:36.943766", "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-Apr-06_to_2018-Apr-10_313.0_-15.0"}, "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": 2018040000335}, "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": "April 06 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 10 2018"}, "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": 50846.6416279694}, "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", "South-American-Monsoon"]}, "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": -15.0}, "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": 313.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "313.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 309.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 313.25}, "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": -12.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-47.53, -14.47], [-47.0, -14.25], [-46.47, -14.47], 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-13.32], [-48.47, -13.47], [-48.25, -14.0], [-48.35, -14.25], [-48.32, -14.32], [-47.97, -14.47], [-47.82, -14.82], [-47.7, -14.88], [-47.53, -14.47], [-47.0, -14.25], [-46.47, -14.47], [-46.25, -15.0], [-46.35, -15.25], [-46.25, -15.5], [-46.35, -15.75], [-46.25, -16.0], [-46.47, -16.53], [-47.0, -16.75], [-47.25, -16.65], [-47.5, -16.75], [-47.75, -16.65], [-48.0, -16.75], [-48.53, -16.53], [-48.75, -16.0], [-48.65, -15.75], [-48.68, -15.68], [-48.75, -15.65], [-49.0, -15.75], [-49.53, -15.53], [-49.68, -15.18], [-50.03, -15.03], [-50.18, -14.68], [-50.53, -14.53], [-50.75, -14.0], [-50.65, -13.75], [-50.68, -13.68], [-51.03, -13.53], [-51.25, -13.0]]]]}, "2018-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-51.25, -13.0], [-51.03, -12.47], [-50.5, -12.25], [-50.25, -12.35], [-50.0, -12.25], [-49.47, -12.47], [-49.32, -12.82], [-48.97, -12.97], [-48.82, -13.32], [-48.47, -13.47], [-48.25, -14.0], [-48.35, -14.25], [-48.32, -14.32], [-47.97, -14.47], [-47.82, -14.82], [-47.7, -14.88], [-47.53, -14.47], [-47.0, -14.25], [-46.47, -14.47], [-46.25, -15.0], [-46.35, -15.25], [-46.25, -15.5], [-46.35, -15.75], [-46.25, -16.0], [-46.47, -16.53], [-47.0, -16.75], [-47.25, -16.65], [-47.5, -16.75], [-47.75, -16.65], [-48.0, -16.75], [-48.53, -16.53], [-48.75, -16.0], [-48.65, -15.75], [-48.68, -15.68], [-48.75, -15.65], [-49.0, -15.75], [-49.53, -15.53], [-49.68, -15.18], [-50.03, -15.03], [-50.18, -14.68], [-50.53, -14.53], [-50.75, -14.0], [-50.65, -13.75], [-50.68, -13.68], [-51.03, -13.53], [-51.25, -13.0]]]]}, "2018-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.25, -15.0], [-49.03, -14.47], [-48.5, -14.25], [-47.97, -14.47], [-47.82, -14.82], [-47.7, -14.88], [-47.53, -14.47], [-47.0, -14.25], [-46.47, -14.47], [-46.25, -15.0], [-46.35, -15.25], [-46.25, -15.5], [-46.35, -15.75], [-46.25, -16.0], [-46.47, -16.53], [-47.0, -16.75], [-47.25, -16.65], [-47.5, -16.75], [-47.75, -16.65], [-48.0, -16.75], [-48.53, -16.53], [-48.75, -16.0], [-48.65, -15.75], [-48.68, -15.68], [-49.03, -15.53], [-49.25, -15.0]]]]}, "2018-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.5, -14.25], [-47.97, -14.47], [-47.75, -15.0], [-47.97, -15.53], [-48.5, -15.75], [-49.03, -15.53], [-49.25, -15.0], [-49.03, -14.47], [-48.5, -14.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.818856535410987}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9257939909257178}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.876881310920567, 23.365158197312383, 22.954870074090024, 21.92933869374525, 23.188397960061252]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.841344040590172, 21.077808742847196, 20.35860826076305, 21.216955491105352, 23.188397960061252]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7640036808741644, -1.8612324180054765, -2.2493448716656683, -1.7093720869499245, -1.3029934265429688]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.0827279253003894, -2.1876644788782755, -2.818856535410987, -2.329777566560608, -1.3029934265429688]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4246381752152142, -1.5442099874474153, -1.8642275931899899, -1.5126508942682602, -1.2103336856040354]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9585098257209705, -1.8483154231071397, -2.475724066121151, -2.0314311081976526, -1.2103336856040354]}}