{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:21:25.306776", "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": "2020-Sep-29_to_2020-Oct-08_263.5_17.0"}, "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": 2020090000732}, "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": "September 29 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 08 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 10}, "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": 225860.12388780477}, "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": 17.0}, "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": 263.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "263.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 258.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 264.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 25.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-99.5, 21.75], [-99.25, 21.65], [-99.0, 21.75], [-98.75, 21.65], [-98.5, 21.75], [-98.25, 21.65], [-98.0, 21.75], [-97.75, 21.65], [-97.5, 21.75], [-96.97, 21.53], [-96.75, 21.0], [-96.85, 20.75], [-96.75, 20.5], [-96.97, 19.97], [-97.5, 19.75], [-97.75, 19.85], [-98.0, 19.75], [-98.25, 19.85], [-98.5, 19.75], [-98.75, 19.85], [-99.0, 19.75], [-99.25, 19.85], [-99.5, 19.75], [-100.03, 19.97], [-100.25, 20.5], [-100.15, 20.75], [-100.25, 21.0], [-100.03, 21.53], [-99.5, 21.75]]], [[[-100.0, 25.75], [-99.47, 25.53], [-99.25, 25.0], [-99.35, 24.75], [-99.32, 24.68], [-98.97, 24.53], [-98.75, 24.0], [-98.97, 23.47], [-99.5, 23.25], [-100.03, 23.47], [-100.18, 23.82], [-100.53, 23.97], [-100.75, 24.5], [-100.65, 24.75], [-100.75, 25.0], [-100.53, 25.53], [-100.0, 25.75]]]]}, "2020-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.15, 21.25], [-101.25, 21.5], [-101.04, 22.0], [-101.25, 22.5], [-101.15, 22.75], [-101.25, 23.0], [-101.03, 23.53], [-100.68, 23.68], [-100.65, 23.75], [-100.68, 23.82], [-101.03, 23.97], [-101.25, 24.5], [-101.03, 25.03], [-100.68, 25.18], [-100.53, 25.53], [-100.0, 25.75], [-99.75, 25.65], [-99.68, 25.68], [-99.53, 26.03], [-99.0, 26.25], [-98.47, 26.03], [-98.25, 25.5], [-98.35, 25.25], [-98.25, 25.0], [-98.47, 24.47], [-98.82, 24.32], [-98.85, 24.25], [-98.75, 24.0], [-98.85, 23.75], [-98.75, 23.5], [-98.85, 23.25], [-98.75, 23.0], [-98.85, 22.75], [-98.82, 22.68], [-98.47, 22.53], [-98.25, 22.0], [-98.35, 21.75], [-98.32, 21.68], [-98.25, 21.65], [-98.0, 21.75], [-97.75, 21.65], [-97.5, 21.75], [-96.97, 21.53], [-96.75, 21.0], [-96.85, 20.75], [-96.82, 20.68], [-96.47, 20.53], [-96.32, 20.18], [-95.97, 20.03], [-95.75, 19.5], [-95.97, 18.97], [-96.32, 18.82], [-96.35, 18.75], [-96.25, 18.5], [-96.35, 18.25], [-96.32, 18.18], [-96.25, 18.15], [-96.0, 18.25], [-95.47, 18.03], [-95.32, 17.68], [-94.97, 17.53], [-94.75, 17.0], [-94.97, 16.47], [-95.5, 16.25], [-95.75, 16.35], [-96.0, 16.25], [-96.25, 16.35], [-96.5, 16.25], [-97.03, 16.47], [-97.18, 16.82], [-97.53, 16.97], [-97.68, 17.32], [-97.75, 17.35], [-98.0, 17.25], [-98.53, 17.47], [-98.75, 18.0], [-98.53, 18.53], [-98.18, 18.68], [-98.03, 19.03], [-97.68, 19.18], [-97.65, 19.25], [-97.7, 19.38], [-98.0, 19.25], [-98.5, 19.46], [-99.0, 19.25], [-99.5, 19.46], [-100.0, 19.25], [-100.53, 19.47], [-100.68, 19.82], [-101.03, 19.97], [-101.25, 20.5], [-101.15, 20.75], [-101.25, 21.0], [-101.15, 21.25]]]]}, "2020-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.15, 21.25], [-101.25, 21.5], [-101.04, 22.0], [-101.25, 22.5], [-101.15, 22.75], [-101.25, 23.0], [-101.03, 23.53], [-100.68, 23.68], [-100.65, 23.75], [-100.68, 23.82], [-101.03, 23.97], [-101.25, 24.5], [-101.03, 25.03], [-100.68, 25.18], [-100.53, 25.53], [-100.0, 25.75], [-99.75, 25.65], [-99.68, 25.68], [-99.53, 26.03], [-99.0, 26.25], [-98.47, 26.03], [-98.25, 25.5], [-98.35, 25.25], [-98.25, 25.0], [-98.47, 24.47], [-98.82, 24.32], [-98.85, 24.25], [-98.75, 24.0], [-98.85, 23.75], [-98.75, 23.5], [-98.85, 23.25], [-98.75, 23.0], [-98.85, 22.75], [-98.82, 22.68], [-98.47, 22.53], [-98.25, 22.0], [-98.35, 21.75], [-98.32, 21.68], [-98.25, 21.65], [-98.0, 21.75], [-97.75, 21.65], [-97.5, 21.75], [-96.97, 21.53], [-96.75, 21.0], [-96.85, 20.75], [-96.82, 20.68], [-96.47, 20.53], [-96.32, 20.18], [-95.97, 20.03], [-95.75, 19.5], [-95.97, 18.97], [-96.32, 18.82], [-96.35, 18.75], [-96.25, 18.5], [-96.35, 18.25], [-96.32, 18.18], [-96.25, 18.15], [-96.0, 18.25], [-95.47, 18.03], [-95.32, 17.68], [-94.97, 17.53], [-94.75, 17.0], [-94.97, 16.47], [-95.5, 16.25], [-95.75, 16.35], [-96.0, 16.25], [-96.25, 16.35], [-96.5, 16.25], [-97.03, 16.47], [-97.18, 16.82], [-97.53, 16.97], [-97.68, 17.32], [-97.75, 17.35], [-98.0, 17.25], [-98.53, 17.47], [-98.75, 18.0], [-98.53, 18.53], [-98.18, 18.68], [-98.03, 19.03], [-97.68, 19.18], [-97.65, 19.25], [-97.7, 19.38], [-98.0, 19.25], [-98.5, 19.46], [-99.0, 19.25], [-99.5, 19.46], [-100.0, 19.25], [-100.53, 19.47], [-100.68, 19.82], [-101.03, 19.97], [-101.25, 20.5], [-101.15, 20.75], [-101.25, 21.0], [-101.15, 21.25]]]]}, "2020-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.15, 21.25], [-101.25, 21.5], [-101.04, 22.0], [-101.25, 22.5], [-101.15, 22.75], [-101.25, 23.0], [-101.03, 23.53], [-100.68, 23.68], [-100.65, 23.75], [-100.68, 23.82], [-101.03, 23.97], [-101.25, 24.5], [-101.03, 25.03], [-100.68, 25.18], [-100.53, 25.53], [-100.0, 25.75], [-99.75, 25.65], [-99.68, 25.68], [-99.53, 26.03], [-99.0, 26.25], [-98.47, 26.03], [-98.25, 25.5], [-98.35, 25.25], [-98.25, 25.0], [-98.47, 24.47], [-98.82, 24.32], [-98.85, 24.25], [-98.75, 24.0], [-98.85, 23.75], [-98.75, 23.5], [-98.85, 23.25], [-98.75, 23.0], [-98.85, 22.75], [-98.82, 22.68], [-98.47, 22.53], [-98.25, 22.0], [-98.35, 21.75], [-98.32, 21.68], [-97.97, 21.53], [-97.82, 21.18], [-97.47, 21.03], [-97.3, 20.62], [-97.0, 20.75], [-96.47, 20.53], [-96.32, 20.18], [-95.97, 20.03], [-95.75, 19.5], [-95.97, 18.97], [-96.32, 18.82], [-96.35, 18.75], [-96.25, 18.5], [-96.35, 18.25], [-96.32, 18.18], [-96.25, 18.15], [-96.0, 18.25], [-95.47, 18.03], [-95.32, 17.68], [-94.97, 17.53], [-94.75, 17.0], [-94.97, 16.47], [-95.5, 16.25], [-95.75, 16.35], [-95.82, 16.32], [-95.97, 15.97], [-96.5, 15.75], [-97.03, 15.97], [-97.18, 16.32], [-97.53, 16.47], [-97.68, 16.82], [-97.75, 16.85], [-98.0, 16.75], [-98.53, 16.97], [-98.68, 17.32], [-99.03, 17.47], [-99.25, 18.0], [-99.15, 18.25], [-99.25, 18.5], [-99.03, 19.03], [-98.5, 19.25], [-98.25, 19.15], [-98.18, 19.18], [-98.12, 19.3], [-98.5, 19.46], [-99.0, 19.25], [-99.5, 19.46], [-100.0, 19.25], [-100.53, 19.47], [-100.68, 19.82], [-101.03, 19.97], [-101.25, 20.5], [-101.15, 20.75], [-101.25, 21.0], [-101.15, 21.25]]]]}, "2020-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-98.5, 19.25], [-98.25, 19.15], [-98.18, 19.18], [-98.12, 19.3], [-98.53, 19.47], [-98.75, 20.0], [-98.53, 20.53], [-98.0, 20.75], [-97.47, 20.53], [-97.25, 20.0], [-97.37, 19.7], [-96.97, 19.53], [-96.82, 19.18], [-96.47, 19.03], [-96.25, 18.5], [-96.37, 18.2], [-95.97, 18.03], [-95.82, 17.68], [-95.47, 17.53], [-95.25, 17.0], [-95.47, 16.47], [-95.82, 16.32], [-95.97, 15.97], [-96.5, 15.75], [-97.03, 15.97], [-97.18, 16.32], [-97.53, 16.47], [-97.68, 16.82], [-97.75, 16.85], [-98.0, 16.75], [-98.53, 16.97], [-98.68, 17.32], [-99.03, 17.47], [-99.25, 18.0], [-99.15, 18.25], [-99.25, 18.5], [-99.03, 19.03], [-98.5, 19.25]]], [[[-100.75, 20.0], [-100.53, 20.53], [-100.0, 20.75], [-99.47, 20.53], [-99.25, 20.0], [-99.47, 19.47], [-100.0, 19.25], [-100.53, 19.47], [-100.75, 20.0]]], [[[-100.5, 25.25], [-100.25, 25.15], [-100.0, 25.25], [-99.47, 25.03], [-99.25, 24.5], [-99.35, 24.25], [-99.25, 24.0], [-99.35, 23.75], [-99.25, 23.5], [-99.47, 22.97], [-100.0, 22.75], [-100.53, 22.97], [-100.75, 23.5], [-100.65, 23.75], [-100.68, 23.82], [-101.03, 23.97], [-101.25, 24.5], [-101.03, 25.03], [-100.5, 25.25]]]]}, "2020-10-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-99.03, 19.03], [-98.5, 19.25], [-98.25, 19.15], [-98.18, 19.18], [-98.03, 19.53], [-97.5, 19.75], [-96.97, 19.53], [-96.82, 19.18], [-96.47, 19.03], [-96.25, 18.5], [-96.37, 18.2], [-95.97, 18.03], [-95.75, 17.5], [-95.85, 17.25], [-95.75, 17.0], [-95.85, 16.75], [-95.75, 16.5], [-95.97, 15.97], [-96.5, 15.75], [-97.03, 15.97], [-97.18, 16.32], [-97.53, 16.47], [-97.68, 16.82], [-97.75, 16.85], [-98.0, 16.75], [-98.53, 16.97], [-98.68, 17.32], [-99.03, 17.47], [-99.25, 18.0], [-99.15, 18.25], [-99.25, 18.5], [-99.03, 19.03]]]]}, "2020-10-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-100.5, 20.75], [-100.25, 20.65], [-100.0, 20.75], [-99.75, 20.65], [-99.68, 20.68], [-99.53, 21.03], [-99.0, 21.25], [-98.47, 21.03], [-98.32, 20.68], [-97.97, 20.53], [-97.82, 20.18], [-97.75, 20.15], [-97.5, 20.25], [-96.97, 20.03], [-96.75, 19.5], [-96.85, 19.25], [-96.75, 19.0], [-96.85, 18.75], [-96.75, 18.5], [-96.85, 18.25], [-96.82, 18.18], [-96.75, 18.15], [-96.5, 18.25], [-95.97, 18.03], [-95.75, 17.5], [-95.85, 17.25], [-95.75, 17.0], [-95.85, 16.75], [-95.75, 16.5], [-95.97, 15.97], [-96.5, 15.75], [-97.03, 15.97], [-97.18, 16.32], [-97.53, 16.47], [-97.68, 16.82], [-97.75, 16.85], [-98.0, 16.75], [-98.53, 16.97], [-98.68, 17.32], [-99.03, 17.47], [-99.18, 17.82], [-99.53, 17.97], [-99.68, 18.32], [-100.03, 18.47], [-100.18, 18.82], [-100.5, 18.96], [-101.0, 18.75], [-101.53, 18.97], [-101.75, 19.5], [-101.53, 20.03], [-101.18, 20.18], [-101.03, 20.53], [-100.5, 20.75]]]]}, "2020-10-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.75, 19.5], [-101.53, 20.03], [-101.18, 20.18], [-101.03, 20.53], [-100.5, 20.75], [-100.25, 20.65], [-100.0, 20.75], [-99.75, 20.65], [-99.68, 20.68], [-99.53, 21.03], [-99.0, 21.25], [-98.47, 21.03], [-98.32, 20.68], [-97.97, 20.53], [-97.82, 20.18], [-97.75, 20.15], [-97.5, 20.25], [-96.97, 20.03], [-96.75, 19.5], [-96.85, 19.25], [-96.75, 19.0], [-96.85, 18.75], [-96.75, 18.5], [-96.85, 18.25], [-96.82, 18.18], [-96.47, 18.03], [-96.32, 17.68], [-95.97, 17.53], [-95.75, 17.0], [-95.85, 16.75], [-95.75, 16.5], [-95.97, 15.97], [-96.5, 15.75], [-97.03, 15.97], [-97.18, 16.32], [-97.53, 16.47], [-97.68, 16.82], [-97.75, 16.85], [-98.0, 16.75], [-98.53, 16.97], [-98.68, 17.32], [-99.03, 17.47], [-99.18, 17.82], [-99.53, 17.97], [-99.68, 18.32], [-100.0, 18.46], [-100.5, 18.25], [-101.03, 18.47], [-101.18, 18.82], [-101.53, 18.97], [-101.75, 19.5]]]]}, "2020-10-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.75, 19.5], [-101.53, 20.03], [-101.18, 20.18], [-101.03, 20.53], [-100.5, 20.75], [-100.25, 20.65], [-100.0, 20.75], [-99.75, 20.65], [-99.68, 20.68], [-99.53, 21.03], [-99.0, 21.25], [-98.47, 21.03], [-98.32, 20.68], [-97.97, 20.53], [-97.82, 20.18], [-97.75, 20.15], [-97.5, 20.25], [-96.97, 20.03], [-96.75, 19.5], [-96.85, 19.25], [-96.75, 19.0], [-96.97, 18.47], [-97.32, 18.32], [-97.35, 18.25], [-97.3, 18.12], [-97.0, 18.25], [-96.47, 18.03], [-96.32, 17.68], [-95.97, 17.53], [-95.75, 17.0], [-95.97, 16.47], [-96.5, 16.25], [-97.03, 16.47], [-97.18, 16.82], [-97.53, 16.97], [-97.7, 17.38], [-98.0, 17.25], [-98.25, 17.35], [-98.5, 17.25], [-99.03, 17.47], [-99.18, 17.82], [-99.53, 17.97], [-99.68, 18.32], [-100.0, 18.46], [-100.5, 18.25], [-101.03, 18.47], [-101.18, 18.82], [-101.53, 18.97], [-101.75, 19.5]]]]}, "2020-10-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.03, 18.47], [-101.25, 19.0], [-101.03, 19.53], [-100.5, 19.75], [-99.97, 19.53], [-99.75, 19.0], [-99.97, 18.47], [-100.5, 18.25], [-101.03, 18.47]]], [[[-99.53, 20.53], [-99.0, 20.75], [-98.47, 20.53], [-98.25, 20.0], [-98.46, 19.5], [-98.32, 19.18], [-97.97, 19.03], [-97.75, 18.5], [-97.97, 17.97], [-98.5, 17.75], [-99.03, 17.97], [-99.18, 18.32], [-99.53, 18.47], [-99.75, 19.0], [-99.54, 19.5], [-99.75, 20.0], [-99.53, 20.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.110517655145713}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.851331662480907}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.041691284463184, 16.52713114035231, 17.248967924747433, 16.404555946745006, 15.757069843761258, 16.523171984328144, 14.273434298150903, 15.095723841156996, 15.012455083782811, 18.385548407076897]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.000101157740744, 10.979744332851908, 12.68299971614232, 9.989831825026897, 11.991607044311934, 11.952776091918793, 9.13252508388058, 10.554285465101032, 10.637782819133633, 13.613861934827241]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.734948081959142, -3.6199745594028334, -2.8337627933072316, -3.1886691977497224, -2.2763587435059405, -2.052721522603777, -2.8990156514606795, -2.290428055685439, -2.33933358080017, -1.7052338317120217]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.995274495909939, -6.110517655145713, -4.722595338628707, -5.745208882780844, -3.6605599017614736, -2.923258047203035, -4.254247429118664, -3.339912240618787, -3.6580033363948132, -2.435162993050824]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6143775241222376, -2.259662287327433, -1.7232946960518263, -2.0415506724534476, -1.7664855999325655, -1.7639643851158484, -2.3491775647929423, -1.8557036795547497, -1.8570682294015297, -1.4433544576798247]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.779446816489773, -2.886734802280641, -2.400233531419086, -3.5635275787482468, -2.375046604394405, -2.3995013938138983, -3.417662221841901, -2.570972053147971, -2.7462531957590532, -1.6590951951024886]}}