{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:26.524087", "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-Dec-27_to_2015-Dec-30_251.5_28.0"}, "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": 2015120000764}, "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": "December 27 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 30 2015"}, "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": 98141.50859955871}, "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": 28.0}, "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": 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": 249.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 252.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.25}, "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": {"2015-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-111.25, 30.0], [-111.03, 30.53], [-110.5, 30.75], [-110.25, 30.65], [-110.0, 30.75], [-109.47, 30.53], [-109.32, 30.18], [-109.25, 30.15], [-109.0, 30.25], [-108.75, 30.15], [-108.5, 30.25], [-108.0, 30.04], [-107.5, 30.25], [-106.97, 30.03], [-106.75, 29.5], [-106.85, 29.25], [-106.75, 29.0], [-106.85, 28.75], [-106.75, 28.5], [-106.97, 27.97], [-107.32, 27.82], [-107.35, 27.75], [-107.25, 27.5], [-107.47, 26.97], [-107.82, 26.82], [-107.85, 26.75], [-107.75, 26.5], [-107.85, 26.25], [-107.82, 26.18], [-107.47, 26.03], [-107.25, 25.5], [-107.47, 24.97], [-108.0, 24.75], [-108.25, 24.85], [-108.5, 24.75], [-109.03, 24.97], [-109.18, 25.32], [-109.53, 25.47], [-109.75, 26.0], [-109.65, 26.25], [-109.68, 26.32], [-110.03, 26.47], [-110.25, 27.0], [-110.15, 27.25], [-110.25, 27.5], [-110.15, 27.75], [-110.18, 27.82], [-110.53, 27.97], [-110.75, 28.5], [-110.65, 28.75], [-110.75, 29.0], [-110.65, 29.25], [-110.68, 29.32], [-111.03, 29.47], [-111.25, 30.0]]]]}, "2015-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-111.25, 30.0], [-111.03, 30.53], [-110.5, 30.75], [-110.25, 30.65], [-110.0, 30.75], [-109.47, 30.53], [-109.32, 30.18], [-109.25, 30.15], [-109.0, 30.25], [-108.75, 30.15], [-108.5, 30.25], [-108.0, 30.04], [-107.5, 30.25], [-106.97, 30.03], [-106.75, 29.5], [-106.85, 29.25], [-106.75, 29.0], [-106.85, 28.75], [-106.75, 28.5], [-106.97, 27.97], [-107.32, 27.82], [-107.35, 27.75], [-107.25, 27.5], [-107.47, 26.97], [-107.82, 26.82], [-107.85, 26.75], [-107.75, 26.5], [-107.85, 26.25], [-107.82, 26.18], [-107.47, 26.03], [-107.25, 25.5], [-107.47, 24.97], [-108.0, 24.75], [-108.25, 24.85], [-108.5, 24.75], [-109.03, 24.97], [-109.18, 25.32], [-109.53, 25.47], [-109.75, 26.0], [-109.65, 26.25], [-109.68, 26.32], [-110.03, 26.47], [-110.25, 27.0], [-110.15, 27.25], [-110.25, 27.5], [-110.15, 27.75], [-110.18, 27.82], [-110.53, 27.97], [-110.75, 28.5], [-110.65, 28.75], [-110.75, 29.0], [-110.65, 29.25], [-110.68, 29.32], [-111.03, 29.47], [-111.25, 30.0]]]]}, "2015-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-111.25, 30.0], [-111.03, 30.53], [-110.5, 30.75], [-110.25, 30.65], [-110.0, 30.75], [-109.47, 30.53], [-109.32, 30.18], [-109.25, 30.15], [-109.0, 30.25], [-108.75, 30.15], [-108.5, 30.25], [-108.0, 30.04], [-107.5, 30.25], [-106.97, 30.03], [-106.75, 29.5], [-106.85, 29.25], [-106.75, 29.0], [-106.85, 28.75], [-106.75, 28.5], [-106.97, 27.97], [-107.32, 27.82], [-107.35, 27.75], [-107.25, 27.5], [-107.47, 26.97], [-107.82, 26.82], [-107.85, 26.75], [-107.75, 26.5], [-107.85, 26.25], [-107.82, 26.18], [-107.47, 26.03], [-107.25, 25.5], [-107.47, 24.97], [-108.0, 24.75], [-108.25, 24.85], [-108.5, 24.75], [-109.03, 24.97], [-109.18, 25.32], [-109.53, 25.47], [-109.75, 26.0], [-109.65, 26.25], [-109.68, 26.32], [-110.03, 26.47], [-110.25, 27.0], [-110.15, 27.25], [-110.25, 27.5], [-110.15, 27.75], [-110.18, 27.82], [-110.53, 27.97], [-110.75, 28.5], [-110.65, 28.75], [-110.75, 29.0], [-110.65, 29.25], [-110.68, 29.32], [-111.03, 29.47], [-111.25, 30.0]]]]}, "2015-12-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-111.25, 30.0], [-111.03, 30.53], [-110.5, 30.75], [-110.25, 30.65], [-110.0, 30.75], [-109.47, 30.53], [-109.32, 30.18], [-109.25, 30.15], [-109.0, 30.25], [-108.75, 30.15], [-108.5, 30.25], [-108.0, 30.04], [-107.5, 30.25], [-106.97, 30.03], [-106.75, 29.5], [-106.85, 29.25], [-106.75, 29.0], [-106.85, 28.75], [-106.75, 28.5], [-106.97, 27.97], [-107.5, 27.75], [-107.8, 27.88], [-107.85, 27.75], [-107.75, 27.5], [-107.97, 26.97], [-108.5, 26.75], [-108.75, 26.85], [-109.0, 26.75], [-109.53, 26.97], [-109.75, 27.5], [-109.65, 27.75], [-109.75, 28.0], [-109.65, 28.25], [-109.68, 28.32], [-110.03, 28.47], [-110.18, 28.82], [-110.53, 28.97], [-110.68, 29.32], [-111.03, 29.47], [-111.25, 30.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.241050091650095}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.352250041150374}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [3.808427071525898, 6.019546337796044, 7.5837044444703, 5.1902901638461]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-5.388127761750809, -1.7073969425435394, 0.28952029354547903, 0.6526440838774192]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.473808719146916, -5.321683786347151, -3.9295731463968133, -4.085967987264505]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.241050091650095, -7.402401865254035, -5.4088723245552615, -5.34143979675008]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.7753101069062134, -2.049428892494176, -1.4684197375918564, -1.4424218316601038]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.5100207878198804, -2.5248466271837158, -1.694057475093661, -1.6664660511286937]}}