{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:52.894947", "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-Jan-14_to_2018-Jan-19_277.0_14.5"}, "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": 2018010000625}, "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 14 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 19 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": 104834.56171687387}, "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": ["Costa Rica", "Nicaragua"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Central-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": ["Caribbean Sea"]}, "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": 14.5}, "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": 277.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "277.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 275.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 278.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 10.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-85.03, 9.97], [-85.25, 10.5], [-85.03, 11.03], [-84.5, 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11.75], [-83.97, 11.53], [-83.75, 11.0], [-83.85, 10.75], [-83.75, 10.5], [-83.97, 9.97], [-84.5, 9.75], [-85.03, 9.97], [-85.25, 10.5], [-85.15, 10.75], [-85.25, 11.0], [-85.03, 11.53], [-84.5, 11.75]]], [[[-84.25, 15.5], [-84.15, 15.75], [-84.25, 16.0], [-84.03, 16.53], [-83.68, 16.68], [-83.53, 17.03], [-83.18, 17.18], [-83.03, 17.53], [-82.5, 17.75], [-82.25, 17.65], [-82.0, 17.75], [-81.47, 17.53], [-81.25, 17.0], [-81.35, 16.75], [-81.25, 16.5], [-81.47, 15.97], [-81.82, 15.82], [-81.85, 15.75], [-81.75, 15.5], [-81.85, 15.25], [-81.75, 15.0], [-81.96, 14.5], [-81.82, 14.18], [-81.47, 14.03], [-81.32, 13.68], [-80.97, 13.53], [-80.75, 13.0], [-80.97, 12.47], [-81.5, 12.25], [-81.75, 12.35], [-81.82, 12.32], [-81.97, 11.97], [-82.5, 11.75], [-82.75, 11.85], [-83.0, 11.75], [-83.53, 11.97], [-83.75, 12.5], [-83.65, 12.75], [-83.75, 13.0], [-83.65, 13.25], [-83.75, 13.5], [-83.65, 13.75], [-83.68, 13.82], [-84.03, 13.97], [-84.25, 14.5], [-84.15, 14.75], [-84.25, 15.0], [-84.15, 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"value": -2.2593919774457163}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.2497296258154507}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.984750955995253, 24.10428479318307, 24.182066106404022, 24.009889572407815, 23.834440595657156, 24.327820677613204]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.134872507454702, 19.14888915813833, 19.998473003447714, 22.788631098729013, 22.861628823235208, 24.327820677613204]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.453662321444148, -1.2984655806189949, -1.134559248061201, -1.08752083495189, -1.081189824685822, -0.9527701865848144]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of 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