{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:40.245638", "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-Feb-29_to_2012-Mar-05_254.5_19.5"}, "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": 2012020001620}, "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 29 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 05 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 70078.1155212803}, "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": ["North Pacific Ocean"]}, "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": 19.5}, "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": 254.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "254.5\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": 257.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 22.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-02-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.03, 19.53], [-104.5, 19.75], [-103.97, 19.53], [-103.82, 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[-105.65, 18.75], [-105.68, 18.82], [-106.03, 18.97], [-106.25, 19.5], [-106.03, 20.03]]], [[[-106.03, 21.47], [-106.25, 22.0], [-106.03, 22.53], [-105.5, 22.75], [-104.97, 22.53], [-104.75, 22.0], [-104.97, 21.47], [-105.5, 21.25], [-106.03, 21.47]]]]}, "2012-03-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.65, 19.75], [-106.75, 20.0], [-106.65, 20.25], [-106.75, 20.5], [-106.53, 21.03], [-106.18, 21.18], [-106.15, 21.25], [-106.18, 21.32], [-106.53, 21.47], [-106.75, 22.0], [-106.53, 22.53], [-106.0, 22.75], [-105.75, 22.65], [-105.5, 22.75], [-104.97, 22.53], [-104.75, 22.0], [-104.85, 21.75], [-104.75, 21.5], [-104.85, 21.25], [-104.75, 21.0], [-104.96, 20.5], [-104.75, 20.0], [-104.85, 19.75], [-104.82, 19.68], [-104.75, 19.65], [-104.5, 19.75], [-103.97, 19.53], [-103.82, 19.18], [-103.47, 19.03], [-103.32, 18.68], [-102.97, 18.53], [-102.82, 18.18], [-102.75, 18.15], [-102.5, 18.25], [-101.97, 18.03], [-101.75, 17.5], [-101.85, 17.25], [-101.75, 17.0], 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anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.7606144285042546}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5960415789805094}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.434887929983518, 22.88736061286471, 22.369226103833284, 22.23427483366379, 22.23630084142968, 21.363445321509232]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.78808956191932, 20.614661845229932, 20.275146487559198, 19.99455347260681, 19.99791211915573, 21.11356688586727]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3002768259582353, -1.5538959640177532, -1.521663779307488, -1.6791738749025835, -1.6746881929858397, -1.8238940668129733]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.566847336162425, -2.064086423498111, -2.4349418832099445, -2.7606144285042546, -2.5378948258673972, -1.929091699367632]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4916841943540446, -1.659481053740666, -1.499022638301429, -1.6615291688549814, -1.6224814032253732, -1.6362126294910464]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7934016782692108, -1.9478799973109524, -2.16197272783847, -2.4499626345276946, -1.9892502284191165, -1.6867193963601257]}}