{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:17:44.586811", "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-Aug-01_to_2018-Aug-04_274.5_13.0"}, "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": 2018080000063}, "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": "August 01 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 04 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 51369.09818173791}, "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": ["North Pacific 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": 13.0}, "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": 274.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "274.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 273.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 276.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 10.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 13.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-08-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-85.5, 11.75], [-84.97, 11.53], [-84.75, 11.0], [-84.97, 10.47], [-85.5, 10.25], [-86.03, 10.47], [-86.25, 11.0], [-86.03, 11.53], [-85.5, 11.75]]]]}, "2018-08-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-87.03, 12.53], [-86.68, 12.68], [-86.65, 12.75], [-86.75, 13.0], [-86.53, 13.53], [-86.0, 13.75], [-85.75, 13.65], [-85.5, 13.75], [-85.25, 13.65], [-85.0, 13.75], [-84.47, 13.53], [-84.32, 13.18], [-84.25, 13.15], [-84.0, 13.25], [-83.47, 13.03], [-83.25, 12.5], [-83.47, 11.97], [-84.0, 11.75], [-84.25, 11.85], [-84.32, 11.82], [-84.35, 11.75], [-84.25, 11.5], [-84.47, 10.97], [-84.82, 10.82], [-84.97, 10.47], [-85.5, 10.25], [-86.03, 10.47], [-86.18, 10.82], [-86.25, 10.85], [-86.5, 10.75], [-87.03, 10.97], [-87.25, 11.5], [-87.15, 11.75], [-87.25, 12.0], [-87.03, 12.53]]]]}, "2018-08-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-87.03, 12.53], [-86.68, 12.68], [-86.65, 12.75], [-86.75, 13.0], [-86.53, 13.53], [-86.0, 13.75], [-85.75, 13.65], [-85.5, 13.75], [-85.25, 13.65], [-85.0, 13.75], [-84.47, 13.53], [-84.32, 13.18], [-84.25, 13.15], [-84.0, 13.25], [-83.47, 13.03], [-83.25, 12.5], [-83.47, 11.97], [-84.0, 11.75], [-84.25, 11.85], [-84.32, 11.82], [-84.35, 11.75], [-84.25, 11.5], [-84.47, 10.97], [-84.82, 10.82], [-84.97, 10.47], [-85.5, 10.25], [-86.03, 10.47], [-86.18, 10.82], [-86.25, 10.85], [-86.5, 10.75], [-87.03, 10.97], [-87.25, 11.5], [-87.15, 11.75], [-87.25, 12.0], [-87.03, 12.53]]]]}, "2018-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-87.03, 12.53], [-86.68, 12.68], [-86.65, 12.75], [-86.75, 13.0], [-86.53, 13.53], [-86.0, 13.75], [-85.75, 13.65], [-85.5, 13.75], [-85.25, 13.65], [-85.0, 13.75], [-84.47, 13.53], [-84.32, 13.18], [-84.25, 13.15], [-84.0, 13.25], [-83.47, 13.03], [-83.25, 12.5], [-83.47, 11.97], [-84.0, 11.75], [-84.25, 11.85], [-84.32, 11.82], [-84.35, 11.75], [-84.25, 11.5], [-84.47, 10.97], [-85.0, 10.75], [-85.25, 10.85], [-85.5, 10.75], [-85.75, 10.85], [-86.0, 10.75], [-86.25, 10.85], [-86.5, 10.75], [-87.03, 10.97], [-87.25, 11.5], [-87.15, 11.75], [-87.25, 12.0], [-87.03, 12.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.4300558759885575}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6136952620503604}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.062750026224478, 24.45990469414147, 23.779443959596506, 24.44019354666625]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.062750026224478, 21.314988115138817, 20.78342505915424, 20.946256621644977]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1856734356505285, -1.3477695458854289, -2.0570908936031977, -1.4518848411007]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.1856734356505285, -1.7896670435620194, -2.4300558759885575, -2.1709164185176064]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4493056465496428, -1.5988493078957695, -2.4193823018121203, -1.707799650226634]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4493056465496428, -1.9281930513414138, -2.789149743095712, -2.3056387749266682]}}