{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:31.841365", "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-Mar-26_to_2015-Mar-30_258.0_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": 2015030000972}, "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": "March 26 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 30 2015"}, "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": 63549.219059073184}, "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": 258.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "258.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 257.75}, "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": 19.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 22.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.0, 21.75], [-101.47, 21.53], [-101.25, 21.0], [-101.47, 20.47], [-102.0, 20.25], [-102.53, 20.47], [-102.75, 21.0], [-102.53, 21.53], [-102.0, 21.75]]]]}, "2015-03-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.53, 22.03], [-102.18, 22.18], [-102.15, 22.25], [-102.25, 22.5], [-102.03, 23.03], [-101.5, 23.25], [-100.97, 23.03], [-100.82, 22.68], [-100.47, 22.53], [-100.25, 22.0], [-100.35, 21.75], [-100.32, 21.68], [-100.25, 21.65], [-100.0, 21.75], [-99.47, 21.53], [-99.32, 21.18], [-98.97, 21.03], [-98.82, 20.68], [-98.47, 20.53], [-98.25, 20.0], [-98.47, 19.47], [-99.0, 19.25], [-99.25, 19.35], [-99.5, 19.25], [-99.75, 19.35], [-100.0, 19.25], [-100.25, 19.35], [-100.5, 19.25], [-100.75, 19.35], [-101.0, 19.25], [-101.25, 19.35], [-101.5, 19.25], [-102.03, 19.47], [-102.25, 20.0], [-102.15, 20.25], [-102.18, 20.32], [-102.53, 20.47], [-102.75, 21.0], [-102.65, 21.25], [-102.75, 21.5], [-102.53, 22.03]]]]}, "2015-03-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.53, 22.03], [-102.18, 22.18], [-102.15, 22.25], [-102.25, 22.5], [-102.03, 23.03], [-101.5, 23.25], [-100.97, 23.03], [-100.82, 22.68], [-100.47, 22.53], [-100.25, 22.0], [-100.35, 21.75], [-100.32, 21.68], [-100.25, 21.65], [-100.0, 21.75], [-99.47, 21.53], [-99.32, 21.18], [-98.97, 21.03], [-98.82, 20.68], [-98.47, 20.53], [-98.25, 20.0], [-98.47, 19.47], [-99.0, 19.25], [-99.25, 19.35], [-99.5, 19.25], [-99.75, 19.35], [-100.0, 19.25], [-100.25, 19.35], [-100.5, 19.25], [-100.75, 19.35], [-101.0, 19.25], [-101.25, 19.35], [-101.5, 19.25], [-102.03, 19.47], [-102.25, 20.0], [-102.15, 20.25], [-102.18, 20.32], [-102.53, 20.47], [-102.75, 21.0], [-102.65, 21.25], [-102.75, 21.5], [-102.53, 22.03]]]]}, "2015-03-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.53, 22.03], [-102.18, 22.18], [-102.15, 22.25], [-102.25, 22.5], [-102.03, 23.03], [-101.5, 23.25], [-100.97, 23.03], [-100.82, 22.68], [-100.47, 22.53], [-100.25, 22.0], [-100.35, 21.75], [-100.32, 21.68], [-100.25, 21.65], 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"max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.114347238529206}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.272864604579214}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.54262344676789, 15.944121952338378, 14.679251841877601, 15.539357007771798, 16.32337075781038]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.54262344676789, 13.274284349940103, 12.263958610693123, 12.843258774337983, 15.129133811724785]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.993188939108961, -2.7544233581341317, -4.037270753050742, -3.2161835473488676, -2.495950820570431]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.993188939108961, -3.8320010606819324, -5.114347238529206, -4.32212193115663, -2.9277471079541897]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.802617701370388, -1.4701710976285194, -2.054711027933719, -1.6316855612649446, -1.2603225526668944]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.802617701370388, -1.8165672744989414, -2.382447885601479, -2.0020667068245386, -1.3033431143813816]}}