{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:17:44.695811", "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": "2018-Aug-02_to_2018-Aug-14_259.5_17.5"}, "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": 2018080000195}, "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": "August 02 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 14 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 13}, "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": 73096.35640611165}, "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", "S.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": 17.5}, "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": 259.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "259.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 257.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 261.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-08-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.03, 19.53], [-100.5, 19.75], [-99.97, 19.53], [-99.82, 19.18], [-99.75, 19.15], [-99.5, 19.25], [-98.97, 19.03], [-98.82, 18.68], [-98.47, 18.53], [-98.25, 18.0], [-98.47, 17.47], [-98.82, 17.32], [-98.97, 16.97], [-99.5, 16.75], [-99.75, 16.85], [-100.0, 16.75], [-100.25, 16.85], [-100.5, 16.75], [-100.75, 16.85], [-101.0, 16.75], [-101.53, 16.97], [-101.75, 17.5], [-101.53, 18.03], [-101.12, 18.2], [-101.25, 18.5], [-101.15, 18.75], [-101.25, 19.0], [-101.03, 19.53]]]]}, "2018-08-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.25, 18.0], [-102.03, 18.53], [-101.5, 18.75], [-101.25, 18.65], [-101.18, 18.68], [-101.15, 18.75], [-101.25, 19.0], [-101.03, 19.53], [-100.5, 19.75], [-100.25, 19.65], [-100.0, 19.75], [-99.75, 19.65], [-99.5, 19.75], [-98.97, 19.53], [-98.75, 19.0], [-98.85, 18.75], [-98.82, 18.68], [-98.47, 18.53], [-98.25, 18.0], [-98.47, 17.47], [-98.82, 17.32], [-98.97, 16.97], [-99.5, 16.75], [-99.75, 16.85], [-100.0, 16.75], [-100.25, 16.85], [-100.5, 16.75], [-100.75, 16.85], [-101.0, 16.75], [-101.53, 16.97], [-101.68, 17.32], [-102.03, 17.47], [-102.25, 18.0]]]]}, "2018-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.03, 17.97], [-103.25, 18.5], [-103.03, 19.03], [-102.5, 19.25], [-102.0, 19.04], [-101.5, 19.25], [-101.2, 19.12], [-101.03, 19.53], [-100.5, 19.75], [-100.25, 19.65], [-100.0, 19.75], [-99.75, 19.65], [-99.5, 19.75], [-98.97, 19.53], [-98.75, 19.0], [-98.85, 18.75], [-98.82, 18.68], [-98.47, 18.53], [-98.25, 18.0], [-98.47, 17.47], [-98.82, 17.32], [-98.97, 16.97], [-99.5, 16.75], [-99.75, 16.85], [-100.0, 16.75], [-100.25, 16.85], [-100.5, 16.75], [-100.75, 16.85], [-101.0, 16.75], [-101.53, 16.97], [-101.68, 17.32], [-102.03, 17.47], [-102.2, 17.88], [-102.5, 17.75], [-103.03, 17.97]]]]}, "2018-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.0, 19.75], [-101.47, 19.53], [-101.32, 19.18], [-101.2, 19.12], [-101.03, 19.53], [-100.5, 19.75], [-100.25, 19.65], [-100.0, 19.75], [-99.75, 19.65], [-99.5, 19.75], [-98.97, 19.53], [-98.75, 19.0], [-98.97, 18.47], [-99.32, 18.32], [-99.37, 18.2], [-98.97, 18.03], [-98.75, 17.5], [-98.97, 16.97], [-99.5, 16.75], [-99.75, 16.85], [-100.0, 16.75], [-100.25, 16.85], [-100.5, 16.75], [-100.75, 16.85], [-101.0, 16.75], [-101.53, 16.97], [-101.68, 17.32], [-102.03, 17.47], [-102.18, 17.82], [-102.25, 17.85], [-102.5, 17.75], [-103.03, 17.97], [-103.25, 18.5], [-103.03, 19.03], [-102.68, 19.18], [-102.53, 19.53], [-102.0, 19.75]]]]}, "2018-08-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.0, 19.75], [-101.47, 19.53], [-101.32, 19.18], [-101.0, 19.04], [-100.5, 19.25], [-99.97, 19.03], [-99.75, 18.5], [-99.87, 18.2], [-99.75, 18.15], [-99.5, 18.25], [-98.97, 18.03], [-98.75, 17.5], [-98.97, 16.97], [-99.5, 16.75], [-99.75, 16.85], [-100.0, 16.75], [-100.25, 16.85], [-100.5, 16.75], [-100.75, 16.85], [-101.0, 16.75], [-101.53, 16.97], [-101.68, 17.32], [-102.03, 17.47], [-102.18, 17.82], [-102.25, 17.85], [-102.5, 17.75], [-103.03, 17.97], [-103.25, 18.5], [-103.03, 19.03], [-102.68, 19.18], [-102.53, 19.53], [-102.0, 19.75]]]]}, "2018-08-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.53, 19.53], [-102.0, 19.75], [-101.47, 19.53], [-101.32, 19.18], [-101.0, 19.04], [-100.5, 19.25], [-99.97, 19.03], [-99.75, 18.5], [-99.87, 18.2], [-99.47, 18.03], [-99.25, 17.5], [-99.47, 16.97], [-100.0, 16.75], [-100.25, 16.85], [-100.5, 16.75], [-100.75, 16.85], [-101.0, 16.75], [-101.53, 16.97], [-101.68, 17.32], [-102.03, 17.47], [-102.18, 17.82], [-102.53, 17.97], [-102.75, 18.5], [-102.65, 18.75], [-102.75, 19.0], [-102.53, 19.53]]]]}, "2018-08-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.25, 17.5], [-101.03, 18.03], [-100.5, 18.25], [-100.25, 18.15], [-100.0, 18.25], [-99.47, 18.03], [-99.25, 17.5], [-99.47, 16.97], [-100.0, 16.75], [-100.25, 16.85], [-100.5, 16.75], [-101.03, 16.97], [-101.25, 17.5]]], [[[-102.25, 19.5], [-102.03, 20.03], [-101.5, 20.25], [-100.97, 20.03], [-100.75, 19.5], [-100.97, 18.97], [-101.5, 18.75], [-102.03, 18.97], [-102.25, 19.5]]], [[[-103.03, 21.53], [-102.5, 21.75], [-102.25, 21.65], [-102.0, 21.75], [-101.47, 21.53], [-101.25, 21.0], [-101.47, 20.47], [-102.0, 20.25], [-102.25, 20.35], [-102.5, 20.25], [-103.03, 20.47], [-103.25, 21.0], [-103.03, 21.53]]]]}, "2018-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.25, 17.5], [-101.03, 18.03], [-100.5, 18.25], [-100.25, 18.15], [-100.0, 18.25], [-99.47, 18.03], [-99.25, 17.5], [-99.47, 16.97], [-100.0, 16.75], [-100.25, 16.85], [-100.5, 16.75], [-101.03, 16.97], [-101.25, 17.5]]], [[[-103.03, 21.53], [-102.5, 21.75], [-102.25, 21.65], [-102.0, 21.75], [-101.47, 21.53], [-101.32, 21.18], [-100.97, 21.03], [-100.75, 20.5], [-100.96, 20.0], [-100.75, 19.5], [-100.97, 18.97], [-101.5, 18.75], [-102.03, 18.97], [-102.18, 19.32], [-102.53, 19.47], [-102.75, 20.0], [-102.65, 20.25], [-102.68, 20.32], [-103.03, 20.47], [-103.25, 21.0], [-103.03, 21.53]]]]}, "2018-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.25, 21.0], [-103.03, 21.53], [-102.5, 21.75], [-102.25, 21.65], [-102.0, 21.75], [-101.47, 21.53], [-101.32, 21.18], [-100.97, 21.03], [-100.75, 20.5], [-100.96, 20.0], [-100.75, 19.5], [-100.97, 18.97], [-101.5, 18.75], [-102.03, 18.97], [-102.18, 19.32], [-102.53, 19.47], [-102.75, 20.0], [-102.65, 20.25], [-102.68, 20.32], [-103.03, 20.47], [-103.25, 21.0]]]]}, "2018-08-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.65, 20.75], [-102.75, 21.0], [-102.53, 21.53], [-102.0, 21.75], [-101.47, 21.53], [-101.32, 21.18], [-100.97, 21.03], [-100.75, 20.5], [-100.97, 19.97], [-101.32, 19.82], [-101.47, 19.47], [-102.0, 19.25], [-102.53, 19.47], [-102.75, 20.0], [-102.65, 20.25], [-102.75, 20.5], [-102.65, 20.75]]]]}, "2018-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.5, 21.75], [-100.97, 21.53], [-100.75, 21.0], [-100.97, 20.47], [-101.5, 20.25], [-102.03, 20.47], [-102.25, 21.0], [-102.03, 21.53], [-101.5, 21.75]]]]}, "2018-08-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.5, 21.75], [-100.97, 21.53], [-100.75, 21.0], [-100.97, 20.47], [-101.5, 20.25], [-102.03, 20.47], [-102.25, 21.0], [-102.03, 21.53], [-101.5, 21.75]]]]}, "2018-08-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.5, 21.75], [-100.97, 21.53], [-100.75, 21.0], [-100.97, 20.47], [-101.5, 20.25], [-102.03, 20.47], [-102.25, 21.0], [-102.03, 21.53], [-101.5, 21.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.725197995416181}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5122116324228219}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.245099227433684, 21.12289017640768, 21.215785925935734, 21.14379135030248, 22.66464311339348, 23.143447417950597, 18.0535696505155, 18.187996795734534, 17.42874425115167, 18.387001646586384, 18.721858211769586, 18.07616397922726, 18.366958290471075]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.869270162797022, 15.931193579742853, 15.259327030950715, 15.24226533111704, 18.027877712222107, 18.372010541392683, 15.442533244699291, 15.25750490766751, 14.871546066768758, 17.479335780189388, 18.721858211769586, 18.07616397922726, 18.366958290471075]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4346065499344776, -1.44107404228112, -1.6169002184905672, -1.6866560316013268, -1.3993033970590887, -1.4903120670761751, -1.2047408459106008, -1.2384549667567057, -1.8474334362380962, -1.4355298999499269, -1.4379951996615432, -2.09474788886223, -1.8112677721509272]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.0079554574460303, -2.1269893699979434, -2.725197995416181, -2.4196987815761304, -1.7897614165451614, -2.1736859528780315, -1.541303124451531, -1.5060807382457142, -2.37038093174732, -1.6578611732741138, -1.4379951996615432, -2.09474788886223, -1.8112677721509272]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4749263031094475, -1.6567856917499237, -1.7712712684644238, -2.073570432417865, -1.68099889848594, -1.6203140649243502, -1.4465736392672308, -1.4157735438333832, -1.9814849203234697, -1.4738121483812545, -1.3591512674485253, -2.0089002986770086, -1.7051839368474089]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.952691272045499, -2.597452033079755, -2.280541263822298, -2.950852551312942, -2.157152600672641, -1.792561012241935, -1.8811511158704564, -1.557026564864524, -2.533782290554846, -1.5550697923234416, -1.3591512674485253, -2.0089002986770086, -1.7051839368474089]}}