{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:51.844361", "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": "2012-Jul-04_to_2012-Jul-07_254.0_30.5"}, "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": 2012070000346}, "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": "July 04 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 07 2012"}, "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": 87949.17135807865}, "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", "United States"]}, "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": 30.5}, "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": 254.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "254.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 252.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 255.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 32.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.03, 32.03], [-107.5, 32.25], [-107.25, 32.15], [-107.0, 32.25], [-106.75, 32.15], [-106.5, 32.25], [-106.25, 32.15], [-106.0, 32.25], [-105.47, 32.03], [-105.32, 31.68], [-104.97, 31.53], [-104.75, 31.0], [-104.85, 30.75], [-104.75, 30.5], [-104.85, 30.25], [-104.75, 30.0], [-104.85, 29.75], [-104.75, 29.5], [-104.85, 29.25], [-104.75, 29.0], [-104.97, 28.47], [-105.5, 28.25], [-105.75, 28.35], [-106.0, 28.25], [-106.53, 28.47], [-106.68, 28.82], [-106.75, 28.85], [-107.0, 28.75], [-107.53, 28.97], [-107.75, 29.5], [-107.65, 29.75], [-107.75, 30.0], [-107.65, 30.25], [-107.68, 30.32], [-108.03, 30.47], [-108.25, 31.0], [-108.15, 31.25], [-108.25, 31.5], [-108.03, 32.03]]]]}, "2012-07-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.03, 32.03], [-107.5, 32.25], [-107.25, 32.15], [-107.0, 32.25], [-106.75, 32.15], [-106.5, 32.25], [-106.25, 32.15], [-106.18, 32.18], [-106.03, 32.53], [-105.5, 32.75], [-104.97, 32.53], [-104.82, 32.18], [-104.47, 32.03], [-104.32, 31.68], [-103.97, 31.53], [-103.75, 31.0], [-103.97, 30.47], [-104.32, 30.32], [-104.35, 30.25], [-104.25, 30.0], [-104.35, 29.75], [-104.25, 29.5], [-104.35, 29.25], [-104.25, 29.0], [-104.47, 28.47], [-105.0, 28.25], [-105.25, 28.35], [-105.5, 28.25], [-105.75, 28.35], [-106.0, 28.25], [-106.25, 28.35], [-106.5, 28.25], [-107.03, 28.47], [-107.18, 28.82], [-107.53, 28.97], [-107.75, 29.5], [-107.65, 29.75], [-107.75, 30.0], [-107.65, 30.25], [-107.68, 30.32], [-108.03, 30.47], [-108.25, 31.0], [-108.15, 31.25], [-108.25, 31.5], [-108.03, 32.03]]]]}, "2012-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.03, 32.03], [-107.5, 32.25], [-107.25, 32.15], [-107.0, 32.25], [-106.75, 32.15], [-106.5, 32.25], [-106.25, 32.15], [-106.18, 32.18], [-106.03, 32.53], [-105.5, 32.75], [-104.97, 32.53], [-104.82, 32.18], [-104.47, 32.03], [-104.32, 31.68], [-103.97, 31.53], [-103.75, 31.0], [-103.97, 30.47], [-104.32, 30.32], [-104.35, 30.25], [-104.25, 30.0], [-104.35, 29.75], [-104.25, 29.5], [-104.35, 29.25], [-104.25, 29.0], [-104.47, 28.47], [-105.0, 28.25], [-105.25, 28.35], [-105.5, 28.25], [-105.75, 28.35], [-106.0, 28.25], [-106.25, 28.35], [-106.5, 28.25], [-107.03, 28.47], [-107.18, 28.82], [-107.53, 28.97], [-107.75, 29.5], [-107.65, 29.75], [-107.75, 30.0], [-107.65, 30.25], [-107.68, 30.32], [-108.03, 30.47], [-108.25, 31.0], [-108.15, 31.25], [-108.25, 31.5], [-108.03, 32.03]]]]}, "2012-07-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.03, 32.03], [-107.5, 32.25], [-107.25, 32.15], [-107.0, 32.25], [-106.75, 32.15], [-106.5, 32.25], [-106.25, 32.15], [-106.18, 32.18], [-106.03, 32.53], [-105.5, 32.75], [-104.97, 32.53], [-104.82, 32.18], [-104.47, 32.03], [-104.32, 31.68], [-103.97, 31.53], [-103.75, 31.0], [-103.97, 30.47], [-104.32, 30.32], [-104.35, 30.25], [-104.25, 30.0], [-104.35, 29.75], [-104.25, 29.5], [-104.35, 29.25], [-104.25, 29.0], [-104.47, 28.47], [-105.0, 28.25], [-105.25, 28.35], [-105.5, 28.25], [-105.75, 28.35], [-106.0, 28.25], [-106.25, 28.35], [-106.5, 28.25], [-107.03, 28.47], [-107.25, 29.0], [-107.15, 29.25], [-107.18, 29.32], [-107.53, 29.47], [-107.75, 30.0], [-107.65, 30.25], [-107.68, 30.32], [-108.03, 30.47], [-108.25, 31.0], [-108.15, 31.25], [-108.25, 31.5], [-108.03, 32.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.0993255219628395}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.835421599662508}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.478668571917012, 22.904894922659423, 21.707837459522352, 23.061404295009993]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.638259095833178, 17.784936576127564, 16.379028318539042, 17.354144550509204]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.243585940513917, -4.617680825855911, -5.782858876983088, -4.5083039604267565]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.586634670144861, -5.682611904719863, -7.0993255219628395, -5.4039069399846085]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7589233135810765, -1.9889832236897502, -2.4833679492144354, -1.8568202087826178]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.278360216534105, -2.3893192463638155, -2.996389903824884, -2.243364161679272]}}