{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:50:19.624919", "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": "2023-Jan-15_to_2023-Jan-19_273.0_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": 2023010000736}, "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 15 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 19 2023"}, "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": 87304.81658443871}, "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": ["Honduras", "Nicaragua"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": ["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": 273.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "273.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 272.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 275.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 11.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 15.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-87.2, 14.12], [-87.03, 14.53], [-86.5, 14.75], [-86.25, 14.65], [-86.18, 14.68], [-86.03, 15.03], [-85.68, 15.18], [-85.65, 15.25], [-85.75, 15.5], [-85.53, 16.03], [-85.0, 16.25], [-84.47, 16.03], [-84.25, 15.5], [-84.35, 15.25], [-84.25, 15.0], [-84.37, 14.7], [-83.97, 14.53], [-83.75, 14.0], [-83.97, 13.47], [-84.32, 13.32], [-84.35, 13.25], [-84.25, 13.0], [-84.46, 12.5], [-84.32, 12.18], [-83.97, 12.03], [-83.75, 11.5], [-83.97, 10.97], [-84.32, 10.82], [-84.47, 10.47], [-85.0, 10.25], [-85.53, 10.47], [-85.75, 11.0], [-85.65, 11.25], [-85.68, 11.32], [-85.75, 11.35], [-86.0, 11.25], [-86.5, 11.46], [-87.0, 11.25], [-87.53, 11.47], [-87.75, 12.0], [-87.65, 12.25], [-87.68, 12.32], [-88.03, 12.47], [-88.25, 13.0], [-88.15, 13.25], [-88.25, 13.5], [-88.03, 14.03], [-87.5, 14.25], [-87.2, 14.12]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Central-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-87.14999999999998, 13.75], [-87.25, 14.0], [-87.02999999999997, 14.53], [-86.5, 14.75], [-86.25, 14.65], [-86.18, 14.68], [-86.02999999999997, 15.03], [-85.68, 15.18], [-85.64999999999998, 15.25], [-85.75, 15.5], [-85.52999999999997, 16.03], [-85.0, 16.25], [-84.47000000000003, 16.03], [-84.25, 15.5], [-84.35000000000002, 15.25], [-84.25, 15.0], [-84.37, 14.7], [-83.97000000000003, 14.53], [-83.75, 14.0], [-83.97000000000003, 13.47], [-84.32, 13.32], [-84.35000000000002, 13.25], [-84.25, 13.0], [-84.45999999999998, 12.5], [-84.32, 12.18], [-83.97000000000003, 12.03], [-83.75, 11.5], [-83.97000000000003, 10.97], [-84.32, 10.82], [-84.47000000000003, 10.47], [-85.0, 10.25], [-85.52999999999997, 10.47], [-85.75, 11.0], [-85.64999999999998, 11.25], [-85.68, 11.32], [-85.75, 11.35], [-86.0, 11.25], [-86.52999999999997, 11.47], [-86.75, 12.0], [-86.64999999999998, 12.25], [-86.68, 12.32], [-86.75, 12.35], [-87.0, 12.25], [-87.52999999999997, 12.47], [-87.75, 13.0], [-87.52999999999997, 13.53], [-87.18, 13.68], [-87.14999999999998, 13.75]]]]}, "2023-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-88.02999999999997, 12.97], [-88.25, 13.5], [-88.02999999999997, 14.03], [-87.5, 14.25], [-87.19999999999999, 14.12], [-87.02999999999997, 14.53], [-86.5, 14.75], [-86.25, 14.65], [-86.18, 14.68], [-86.02999999999997, 15.03], [-85.68, 15.18], [-85.64999999999998, 15.25], [-85.75, 15.5], [-85.52999999999997, 16.03], [-85.0, 16.25], [-84.47000000000003, 16.03], [-84.25, 15.5], [-84.35000000000002, 15.25], [-84.25, 15.0], [-84.37, 14.7], [-83.97000000000003, 14.53], [-83.75, 14.0], [-83.97000000000003, 13.47], [-84.32, 13.32], [-84.35000000000002, 13.25], [-84.25, 13.0], [-84.45999999999998, 12.5], [-84.32, 12.18], [-83.97000000000003, 12.03], [-83.75, 11.5], [-83.97000000000003, 10.97], [-84.32, 10.82], [-84.47000000000003, 10.47], [-85.0, 10.25], [-85.52999999999997, 10.47], [-85.75, 11.0], [-85.64999999999998, 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"description": "The daily evolution of mean t2m.", "value": [21.605241010038753, 21.794445470071594, 22.170993774486647, 23.960377476592157, 25.95706907175355]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.04639690015506, 18.074634802026935, 18.18507158364804, 19.339520360685242, 23.811383716412024]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6190163564075915, -1.8605643829368264, -1.7609051922606402, -1.4496195797990437, -1.4272979934740608]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.681199120692213, -2.6455425687967136, -2.656151382554242, -2.1765634469779798, -1.8073075766545799]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8080492677793492, -2.1331455359841667, -2.0187023025585753, -1.674904211955406, -1.5765615946127902]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.47963131546488, -2.9465305612668153, -3.2697274273767785, -2.3816051045037723, -2.044538735662178]}}