{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:13.984763", "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": "2013-Jan-03_to_2013-Jan-05_262.0_24.0"}, "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": 2013010000190}, "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 03 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 05 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 53359.772583971586}, "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": ["Mexico"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.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": ["Gulf of Mexico"]}, "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": 24.0}, "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": 262.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "262.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 260.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 262.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 23.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-01-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-100.15, 25.25], [-100.25, 25.5], [-100.03, 26.03], [-99.68, 26.18], [-99.53, 26.53], [-99.0, 26.75], [-98.47, 26.53], [-98.32, 26.18], [-98.0, 26.04], [-97.5, 26.25], [-96.97, 26.03], [-96.75, 25.5], [-96.97, 24.97], [-97.32, 24.82], [-97.35, 24.75], [-97.32, 24.68], [-96.97, 24.53], [-96.75, 24.0], [-96.97, 23.47], [-97.32, 23.32], [-97.47, 22.97], [-98.0, 22.75], [-98.25, 22.85], [-98.5, 22.75], [-99.03, 22.97], [-99.18, 23.32], [-99.53, 23.47], [-99.68, 23.82], [-100.03, 23.97], [-100.25, 24.5], [-100.15, 24.75], [-100.25, 25.0], [-100.15, 25.25]]]]}, "2013-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-100.15, 25.25], [-100.25, 25.5], [-100.03, 26.03], [-99.68, 26.18], [-99.53, 26.53], [-99.0, 26.75], [-98.47, 26.53], [-98.32, 26.18], [-98.0, 26.04], [-97.5, 26.25], [-96.97, 26.03], [-96.75, 25.5], [-96.97, 24.97], [-97.32, 24.82], [-97.35, 24.75], [-97.32, 24.68], [-96.97, 24.53], [-96.75, 24.0], [-96.97, 23.47], [-97.32, 23.32], [-97.47, 22.97], [-98.0, 22.75], [-98.25, 22.85], [-98.5, 22.75], [-99.03, 22.97], [-99.18, 23.32], [-99.53, 23.47], [-99.68, 23.82], [-100.03, 23.97], [-100.25, 24.5], [-100.15, 24.75], [-100.25, 25.0], [-100.15, 25.25]]]]}, "2013-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-100.15, 25.25], [-100.25, 25.5], [-100.03, 26.03], [-99.68, 26.18], [-99.53, 26.53], [-99.0, 26.75], [-98.47, 26.53], [-98.32, 26.18], [-98.0, 26.04], [-97.5, 26.25], [-96.97, 26.03], [-96.75, 25.5], [-96.97, 24.97], [-97.32, 24.82], [-97.35, 24.75], [-97.32, 24.68], [-96.97, 24.53], [-96.75, 24.0], [-96.97, 23.47], [-97.32, 23.32], [-97.47, 22.97], [-98.0, 22.75], [-98.25, 22.85], [-98.5, 22.75], [-99.03, 22.97], [-99.18, 23.32], [-99.53, 23.47], [-99.68, 23.82], [-100.03, 23.97], [-100.25, 24.5], [-100.15, 24.75], [-100.25, 25.0], [-100.15, 25.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.039564968468085}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -8.363776239569287}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.869514815582988, 7.252362413280252, 7.964511846147559]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.855140536543388, 4.62249959761607, 5.886612220090399]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.54185095548604, -8.70670565668601, -7.842772106535808]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.673532439637938, -10.039564968468085, -9.04876481986281]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0721154922540816, -1.9579996511524171, -1.722729090625302]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.245648322777379, -2.1783532930018903, -1.9585057233399685]}}