{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:51:04.100951", "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": "2024-Feb-15_to_2024-Feb-19_257.5_21.0"}, "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": 2024020000354}, "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": "February 15 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 19 2024"}, "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": 167660.16170408909}, "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": 21.0}, "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": 257.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "257.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 253.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 258.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 19.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.15, 26.25], [-107.25, 26.5], [-107.03, 27.03], [-106.5, 27.25], [-105.97, 27.03], [-105.82, 26.68], [-105.47, 26.53], [-105.25, 26.0], [-105.35, 25.75], [-105.32, 25.68], [-104.97, 25.53], [-104.82, 25.18], [-104.47, 25.03], [-104.25, 24.5], [-104.37, 24.2], [-103.97, 24.03], [-103.75, 23.5], [-103.85, 23.25], [-103.75, 23.0], [-103.85, 22.75], [-103.8, 22.63], [-103.5, 22.75], [-102.97, 22.53], [-102.82, 22.18], [-102.47, 22.03], [-102.32, 21.68], [-101.97, 21.53], [-101.75, 21.0], [-101.97, 20.47], [-102.32, 20.32], [-102.47, 19.97], [-103.0, 19.75], [-103.25, 19.85], [-103.5, 19.75], [-103.75, 19.85], [-104.0, 19.75], [-104.25, 19.85], [-104.5, 19.75], [-105.03, 19.97], [-105.25, 20.5], [-105.15, 20.75], [-105.25, 21.0], [-105.03, 21.53], [-104.68, 21.68], [-104.62, 21.8], [-105.03, 21.97], [-105.25, 22.5], [-105.15, 22.75], [-105.25, 23.0], [-105.15, 23.25], [-105.25, 23.5], [-105.12, 23.8], [-105.53, 23.97], [-105.68, 24.32], [-106.03, 24.47], [-106.18, 24.82], [-106.25, 24.85], [-106.5, 24.75], [-107.03, 24.97], [-107.25, 25.5], [-107.15, 25.75], [-107.25, 26.0], [-107.15, 26.25]]]]}, "2024-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.15, 26.25], [-107.25, 26.5], [-107.03, 27.03], [-106.5, 27.25], [-105.97, 27.03], [-105.82, 26.68], [-105.47, 26.53], [-105.25, 26.0], [-105.35, 25.75], [-105.32, 25.68], [-105.0, 25.54], [-104.68, 25.68], [-104.65, 25.75], [-104.75, 26.0], [-104.53, 26.53], [-104.0, 26.75], [-103.75, 26.65], [-103.5, 26.75], [-103.25, 26.65], [-103.0, 26.75], [-102.47, 26.53], [-102.32, 26.18], [-101.97, 26.03], [-101.75, 25.5], [-101.85, 25.25], [-101.75, 25.0], [-101.85, 24.75], [-101.75, 24.5], [-101.85, 24.25], [-101.75, 24.0], [-101.85, 23.75], [-101.75, 23.5], [-101.97, 22.97], [-102.5, 22.75], [-102.75, 22.85], [-102.82, 22.82], [-102.85, 22.75], [-102.82, 22.68], [-102.47, 22.53], [-102.25, 22.0], [-102.35, 21.75], [-102.32, 21.68], [-101.97, 21.53], [-101.75, 21.0], [-101.85, 20.75], [-101.75, 20.5], [-101.97, 19.97], [-102.32, 19.82], [-102.47, 19.47], [-103.0, 19.25], [-103.5, 19.46], [-104.0, 19.25], [-104.25, 19.35], [-104.5, 19.25], [-105.03, 19.47], [-105.18, 19.82], [-105.53, 19.97], [-105.75, 20.5], [-105.65, 20.75], [-105.75, 21.0], [-105.53, 21.53], [-105.18, 21.68], [-105.04, 22.0], [-105.25, 22.5], [-105.15, 22.75], [-105.25, 23.0], [-105.15, 23.25], [-105.25, 23.5], [-105.12, 23.8], [-105.53, 23.97], [-105.68, 24.32], [-106.03, 24.47], [-106.18, 24.82], [-106.25, 24.85], [-106.5, 24.75], [-107.03, 24.97], [-107.25, 25.5], [-107.15, 25.75], [-107.25, 26.0], [-107.15, 26.25]], [[-103.68, 23.68], [-103.65, 23.75], [-103.68, 23.82], [-103.75, 23.85], [-103.87, 23.8], [-103.82, 23.68], [-103.75, 23.65], [-103.68, 23.68]]]]}, "2024-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.15, 26.25], [-107.25, 26.5], [-107.03, 27.03], [-106.5, 27.25], [-105.97, 27.03], [-105.82, 26.68], [-105.47, 26.53], [-105.25, 26.0], [-105.35, 25.75], [-105.32, 25.68], [-105.0, 25.54], [-104.68, 25.68], [-104.65, 25.75], [-104.75, 26.0], [-104.53, 26.53], [-104.0, 26.75], [-103.75, 26.65], [-103.5, 26.75], [-103.25, 26.65], [-103.0, 26.75], [-102.47, 26.53], [-102.32, 26.18], [-101.97, 26.03], [-101.75, 25.5], [-101.85, 25.25], [-101.75, 25.0], [-101.85, 24.75], [-101.75, 24.5], [-101.85, 24.25], [-101.75, 24.0], [-101.85, 23.75], [-101.75, 23.5], [-101.97, 22.97], [-102.5, 22.75], [-102.75, 22.85], [-102.82, 22.82], [-102.85, 22.75], [-102.82, 22.68], [-102.47, 22.53], [-102.25, 22.0], [-102.35, 21.75], [-102.32, 21.68], [-102.25, 21.65], [-102.0, 21.75], [-101.47, 21.53], [-101.25, 21.0], [-101.35, 20.75], [-101.32, 20.68], [-100.97, 20.53], [-100.75, 20.0], [-100.97, 19.47], [-101.5, 19.25], [-102.03, 19.47], [-102.18, 19.82], [-102.25, 19.85], [-102.32, 19.82], [-102.47, 19.47], [-103.0, 19.25], [-103.5, 19.46], [-104.0, 19.25], [-104.25, 19.35], [-104.5, 19.25], [-105.03, 19.47], [-105.18, 19.82], [-105.53, 19.97], [-105.75, 20.5], [-105.65, 20.75], [-105.75, 21.0], [-105.53, 21.53], [-105.18, 21.68], [-105.04, 22.0], [-105.25, 22.5], [-105.15, 22.75], [-105.25, 23.0], [-105.15, 23.25], [-105.25, 23.5], [-105.12, 23.8], [-105.53, 23.97], [-105.68, 24.32], [-106.03, 24.47], [-106.18, 24.82], [-106.25, 24.85], [-106.5, 24.75], [-107.03, 24.97], [-107.25, 25.5], [-107.15, 25.75], [-107.25, 26.0], [-107.15, 26.25]], [[-103.68, 23.68], [-103.65, 23.75], [-103.68, 23.82], [-103.75, 23.85], [-103.87, 23.8], [-103.82, 23.68], [-103.75, 23.65], [-103.68, 23.68]]]]}, "2024-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.53, 21.53], [-105.18, 21.68], [-105.03, 22.03], [-104.62, 22.2], [-104.75, 22.5], [-104.65, 22.75], [-104.75, 23.0], [-104.53, 23.53], [-104.0, 23.75], [-104.25, 23.85], [-104.5, 23.75], [-105.03, 23.97], [-105.25, 24.5], [-105.15, 24.75], [-105.25, 25.0], [-105.03, 25.53], [-104.68, 25.68], [-104.65, 25.75], [-104.75, 26.0], [-104.53, 26.53], [-104.0, 26.75], [-103.75, 26.65], [-103.5, 26.75], [-103.25, 26.65], [-103.0, 26.75], [-102.47, 26.53], [-102.32, 26.18], [-101.97, 26.03], [-101.75, 25.5], [-101.85, 25.25], [-101.75, 25.0], [-101.85, 24.75], [-101.75, 24.5], [-101.85, 24.25], [-101.75, 24.0], [-101.85, 23.75], [-101.75, 23.5], [-101.97, 22.97], [-102.5, 22.75], [-102.75, 22.85], [-102.82, 22.82], [-102.85, 22.75], [-102.82, 22.68], [-102.47, 22.53], [-102.25, 22.0], [-102.35, 21.75], [-102.32, 21.68], [-102.25, 21.65], [-102.0, 21.75], [-101.47, 21.53], [-101.25, 21.0], [-101.35, 20.75], [-101.32, 20.68], [-100.97, 20.53], [-100.75, 20.0], [-100.97, 19.47], [-101.5, 19.25], [-102.03, 19.47], [-102.18, 19.82], [-102.25, 19.85], [-102.32, 19.82], [-102.47, 19.47], [-103.0, 19.25], [-103.5, 19.46], [-104.0, 19.25], [-104.25, 19.35], [-104.5, 19.25], [-105.03, 19.47], [-105.18, 19.82], [-105.53, 19.97], [-105.75, 20.5], [-105.65, 20.75], [-105.75, 21.0], [-105.53, 21.53]], [[-103.75, 23.65], [-103.68, 23.68], [-103.65, 23.75], [-103.68, 23.82], [-103.75, 23.85], [-104.0, 23.75], [-103.75, 23.65]]]]}, "2024-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.03, 21.53], [-102.5, 21.75], [-102.25, 21.65], [-102.0, 21.75], [-101.47, 21.53], [-101.25, 21.0], [-101.35, 20.75], [-101.32, 20.68], [-100.97, 20.53], [-100.75, 20.0], [-100.97, 19.47], [-101.5, 19.25], [-102.03, 19.47], [-102.18, 19.82], [-102.25, 19.85], [-102.5, 19.75], [-103.03, 19.97], [-103.25, 20.5], [-103.15, 20.75], [-103.25, 21.0], [-103.03, 21.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.967420014012475}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.399583756422885}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.098509064547272, 11.432163835093434, 10.908798272347951, 11.884108187132654, 14.645787724371303]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.051795650678514, 1.2193515108421593, 1.893972588830195, 8.15334197245744, 14.34685198951263]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.039004956662342, -4.1367566395290725, -4.809084869249749, -5.0138775003739235, -2.749718122454908]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.7398369804121216, -6.726357363692443, -7.373042813847007, -7.967420014012475, -3.1862014841054247]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5359570452413684, -1.774394127266005, -2.1392184416088376, -2.1469065444253395, -1.5953083001886077]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.886380423147438, -2.249960878795402, -3.2020735940912615, -3.092099004001227, -1.7239846933834964]}}