{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:57.959223", "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": "2015-May-10_to_2015-May-17_251.5_27.5"}, "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": 2015050000422}, "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": "May 10 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 17 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 51719.13737922918}, "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": []}, "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": 27.5}, "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": 251.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "251.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 250.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 252.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.53, 25.97], [-109.75, 26.5], [-109.53, 27.03], [-109.0, 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[-109.75, 26.5], [-109.65, 26.75], [-109.75, 27.0], [-109.65, 27.25]]]]}, "2015-05-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.65, 27.75], [-109.75, 28.0], [-109.53, 28.53], [-109.0, 28.75], [-108.75, 28.65], [-108.68, 28.68], [-108.53, 29.03], [-108.0, 29.25], [-107.47, 29.03], [-107.25, 28.5], [-107.35, 28.25], [-107.25, 28.0], [-107.35, 27.75], [-107.25, 27.5], [-107.47, 26.97], [-107.82, 26.82], [-107.97, 26.47], [-108.5, 26.25], [-108.75, 26.35], [-109.0, 26.25], [-109.53, 26.47], [-109.75, 27.0], [-109.65, 27.25], [-109.75, 27.5], [-109.65, 27.75]]]]}, "2015-05-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.65, 27.75], [-109.75, 28.0], [-109.53, 28.53], [-109.0, 28.75], [-108.75, 28.65], [-108.68, 28.68], [-108.53, 29.03], [-108.0, 29.25], [-107.47, 29.03], [-107.25, 28.5], [-107.35, 28.25], [-107.25, 28.0], [-107.35, 27.75], [-107.25, 27.5], [-107.47, 26.97], [-107.82, 26.82], [-107.97, 26.47], [-108.5, 26.25], [-108.75, 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duration", "value": -3.604104189741308}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.48886269513173, 24.26440713334489, 18.061775659864225, 17.338843029206828, 18.216986689099713, 16.994965811090083, 17.36524070165916, 17.626593614548312]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.94517524051031, 23.827023938926345, 11.341997440628688, 11.363218403641156, 12.084252477723169, 10.823041183502937, 13.48347980958033, 13.581925931224134]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.031880215872974, -2.3273625022365536, -4.133878244634745, -4.033135553977218, -3.3428657057546554, -3.8054688912383163, -3.360643167018665, -3.239870909054318]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum 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