{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:54.600387", "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-10_to_2012-Jul-12_255.0_31.5"}, "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": 2012070000621}, "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 10 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 12 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 50422.375140674405}, "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": 31.5}, "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": 255.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "255.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 253.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 257.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 29.75}, "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": {"2012-07-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.53, 31.03], [-106.18, 31.18], [-106.03, 31.53], [-105.68, 31.68], [-105.53, 32.03], [-105.0, 32.25], [-104.75, 32.15], [-104.68, 32.18], [-104.53, 32.53], [-104.0, 32.75], [-103.47, 32.53], [-103.32, 32.18], [-102.97, 32.03], [-102.82, 31.68], [-102.47, 31.53], [-102.25, 31.0], [-102.47, 30.47], [-102.82, 30.32], [-102.85, 30.25], [-102.75, 30.0], [-102.97, 29.47], [-103.5, 29.25], [-103.75, 29.35], [-104.0, 29.25], [-104.53, 29.47], [-104.7, 29.88], [-104.82, 29.82], [-104.97, 29.47], [-105.5, 29.25], [-105.75, 29.35], [-106.0, 29.25], [-106.53, 29.47], [-106.75, 30.0], [-106.65, 30.25], [-106.75, 30.5], [-106.53, 31.03]]]]}, "2012-07-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.53, 31.03], [-106.18, 31.18], [-106.03, 31.53], [-105.68, 31.68], [-105.53, 32.03], [-105.0, 32.25], [-104.75, 32.15], [-104.68, 32.18], [-104.53, 32.53], [-104.0, 32.75], [-103.47, 32.53], [-103.32, 32.18], [-102.97, 32.03], [-102.82, 31.68], [-102.47, 31.53], [-102.25, 31.0], [-102.47, 30.47], [-102.82, 30.32], [-102.85, 30.25], [-102.75, 30.0], [-102.97, 29.47], [-103.5, 29.25], [-103.75, 29.35], [-104.0, 29.25], [-104.53, 29.47], [-104.7, 29.88], [-104.82, 29.82], [-104.97, 29.47], [-105.5, 29.25], [-105.75, 29.35], [-106.0, 29.25], [-106.53, 29.47], [-106.75, 30.0], [-106.65, 30.25], [-106.75, 30.5], [-106.53, 31.03]]]]}, "2012-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.53, 31.03], [-106.18, 31.18], [-106.03, 31.53], [-105.68, 31.68], [-105.53, 32.03], [-105.0, 32.25], [-104.75, 32.15], [-104.68, 32.18], [-104.53, 32.53], [-104.0, 32.75], [-103.47, 32.53], [-103.32, 32.18], [-102.97, 32.03], [-102.82, 31.68], [-102.47, 31.53], [-102.25, 31.0], [-102.47, 30.47], [-102.82, 30.32], [-102.85, 30.25], [-102.75, 30.0], [-102.97, 29.47], [-103.5, 29.25], [-103.75, 29.35], [-104.0, 29.25], [-104.53, 29.47], [-104.7, 29.88], [-104.82, 29.82], [-104.97, 29.47], [-105.5, 29.25], [-105.75, 29.35], [-106.0, 29.25], [-106.53, 29.47], [-106.75, 30.0], [-106.65, 30.25], [-106.75, 30.5], [-106.53, 31.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.463731630590246}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.599327387837764}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.66018994718229, 22.335319110658133, 23.607926682872687]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.61028118637364, 20.567624804874924, 21.738803362462647]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.128332761399229, -5.507720332142029, -4.161929069972033]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.395676724346515, -6.463731630590246, -4.79705377948909]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5246783341982433, -2.017530275301985, -1.4744247748610635]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.962175651401972, -2.248582125784522, -1.7044219165242578]}}