{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:35:30.672708", "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": "2023-Jun-05_to_2023-Jun-15_246.0_31.0"}, "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": 2023060000240}, "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": "June 05 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 15 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 11}, "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": 167631.2297202814}, "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": ["Gulf of California"]}, "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": 31.0}, "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": 246.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "246.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 243.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 248.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 27.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 33.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-06-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.75, 31.0], [-116.53, 31.53], [-116.0, 31.75], [-115.47, 31.53], [-115.25, 31.0], [-115.37, 30.7], [-114.97, 30.53], [-114.82, 30.18], [-114.47, 30.03], [-114.32, 29.68], [-113.97, 29.53], [-113.75, 29.0], [-113.97, 28.47], [-114.5, 28.25], [-115.03, 28.47], [-115.18, 28.82], [-115.53, 28.97], [-115.68, 29.32], [-116.03, 29.47], [-116.25, 30.0], [-116.12, 30.3], [-116.53, 30.47], [-116.75, 31.0]]]]}, "2023-06-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.75, 31.0], [-116.53, 31.53], [-116.0, 31.75], [-115.47, 31.53], [-115.32, 31.18], [-114.97, 31.03], [-114.82, 30.68], [-114.75, 30.65], [-114.68, 30.68], [-114.65, 30.75], [-114.75, 31.0], [-114.65, 31.25], [-114.75, 31.5], [-114.65, 31.75], [-114.75, 32.0], [-114.53, 32.53], [-114.0, 32.75], [-113.75, 32.65], [-113.5, 32.75], [-112.97, 32.53], [-112.75, 32.0], [-112.96, 31.5], [-112.75, 31.0], [-112.97, 30.47], [-113.32, 30.32], [-113.35, 30.25], [-113.32, 30.18], [-112.97, 30.03], [-112.75, 29.5], [-112.85, 29.25], [-112.75, 29.0], [-112.97, 28.47], [-113.5, 28.25], [-113.75, 28.35], [-114.0, 28.25], [-114.25, 28.35], [-114.5, 28.25], [-115.03, 28.47], [-115.18, 28.82], [-115.53, 28.97], [-115.68, 29.32], [-116.03, 29.47], [-116.25, 30.0], [-116.15, 30.25], [-116.18, 30.32], [-116.53, 30.47], [-116.75, 31.0]]]]}, "2023-06-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.75, 31.0], [-116.53, 31.53], [-116.0, 31.75], [-115.7, 31.63], [-115.53, 32.03], [-115.18, 32.18], [-115.03, 32.53], [-114.5, 32.75], [-114.25, 32.65], [-114.0, 32.75], [-113.75, 32.65], [-113.5, 32.75], [-112.97, 32.53], [-112.75, 32.0], [-112.85, 31.75], [-112.75, 31.5], [-112.85, 31.25], [-112.75, 31.0], [-112.85, 30.75], [-112.75, 30.5], [-112.85, 30.25], [-112.82, 30.18], [-112.47, 30.03], [-112.25, 29.5], [-112.35, 29.25], [-112.25, 29.0], [-112.47, 28.47], [-113.0, 28.25], [-113.25, 28.35], [-113.5, 28.25], [-113.75, 28.35], [-114.0, 28.25], [-114.25, 28.35], [-114.5, 28.25], [-115.03, 28.47], [-115.18, 28.82], [-115.53, 28.97], [-115.68, 29.32], [-116.03, 29.47], [-116.25, 30.0], [-116.15, 30.25], [-116.18, 30.32], [-116.53, 30.47], [-116.75, 31.0]]]]}, "2023-06-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.25, 30.5], [-116.03, 31.03], [-115.62, 31.2], [-115.75, 31.5], [-115.53, 32.03], [-115.18, 32.18], [-115.03, 32.53], [-114.5, 32.75], [-114.25, 32.65], [-114.0, 32.75], [-113.75, 32.65], [-113.5, 32.75], [-112.97, 32.53], [-112.75, 32.0], [-112.85, 31.75], [-112.75, 31.5], [-112.85, 31.25], [-112.75, 31.0], [-112.85, 30.75], [-112.75, 30.5], [-112.85, 30.25], [-112.82, 30.18], [-112.47, 30.03], [-112.25, 29.5], [-112.35, 29.25], [-112.25, 29.0], [-112.47, 28.47], [-113.0, 28.25], [-113.25, 28.35], [-113.5, 28.25], [-113.75, 28.35], [-114.0, 28.25], [-114.25, 28.35], [-114.5, 28.25], [-115.03, 28.47], [-115.18, 28.82], [-115.53, 28.97], [-115.75, 29.5], [-115.65, 29.75], [-115.68, 29.82], [-116.03, 29.97], [-116.25, 30.5]]]]}, "2023-06-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-115.75, 31.5], [-115.53, 32.03], [-115.18, 32.18], [-115.03, 32.53], [-114.5, 32.75], [-114.25, 32.65], [-114.0, 32.75], [-113.47, 32.53], [-113.32, 32.18], [-112.97, 32.03], [-112.75, 31.5], [-112.85, 31.25], [-112.75, 31.0], [-112.85, 30.75], [-112.75, 30.5], [-112.85, 30.25], [-112.82, 30.18], [-112.47, 30.03], [-112.25, 29.5], [-112.35, 29.25], [-112.25, 29.0], [-112.47, 28.47], [-113.0, 28.25], [-113.25, 28.35], [-113.5, 28.25], [-114.03, 28.47], [-114.25, 29.0], [-114.12, 29.3], [-114.53, 29.47], [-114.75, 30.0], [-114.65, 30.25], [-114.68, 30.32], [-115.03, 30.47], [-115.18, 30.82], [-115.53, 30.97], [-115.75, 31.5]]]]}, "2023-06-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.53, 32.03], [-116.0, 32.25], [-115.5, 32.04], [-115.18, 32.18], [-115.03, 32.53], [-114.5, 32.75], [-113.97, 32.53], [-113.82, 32.18], [-113.75, 32.15], [-113.5, 32.25], [-112.97, 32.03], [-112.82, 31.68], [-112.47, 31.53], [-112.25, 31.0], [-112.47, 30.47], [-112.82, 30.32], [-112.85, 30.25], [-112.8, 30.13], [-112.5, 30.25], [-111.97, 30.03], [-111.8, 29.63], [-111.5, 29.75], [-110.97, 29.53], [-110.75, 29.0], [-110.97, 28.47], [-111.5, 28.25], [-112.03, 28.47], [-112.2, 28.88], [-112.32, 28.82], [-112.47, 28.47], [-113.0, 28.25], [-113.25, 28.35], [-113.5, 28.25], [-114.03, 28.47], [-114.18, 28.82], [-114.25, 28.85], [-114.5, 28.75], [-114.75, 28.85], [-115.0, 28.75], [-115.53, 28.97], [-115.68, 29.32], [-116.03, 29.47], [-116.25, 30.0], [-116.15, 30.25], [-116.18, 30.32], [-116.53, 30.47], [-116.75, 31.0], [-116.65, 31.25], [-116.75, 31.5], [-116.53, 32.03]]]]}, "2023-06-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.53, 32.03], [-116.18, 32.18], [-116.15, 32.25], [-116.25, 32.5], [-116.03, 33.03], [-115.5, 33.25], [-115.2, 33.13], [-115.03, 33.53], [-114.5, 33.75], [-113.97, 33.53], [-113.82, 33.18], [-113.47, 33.03], [-113.32, 32.68], [-113.25, 32.65], [-113.18, 32.68], [-113.15, 32.75], [-113.25, 33.0], [-113.03, 33.53], [-112.5, 33.75], [-111.97, 33.53], [-111.75, 33.0], [-111.85, 32.75], [-111.75, 32.5], [-111.85, 32.25], [-111.82, 32.18], [-111.47, 32.03], [-111.25, 31.5], [-111.35, 31.25], [-111.25, 31.0], [-111.35, 30.75], [-111.32, 30.68], [-110.97, 30.53], [-110.75, 30.0], [-110.85, 29.75], [-110.75, 29.5], [-110.85, 29.25], [-110.75, 29.0], [-110.97, 28.47], [-111.5, 28.25], [-111.93, 28.43], [-111.75, 28.0], [-111.85, 27.75], [-111.75, 27.5], [-111.97, 26.97], [-112.5, 26.75], [-113.03, 26.97], [-113.25, 27.5], [-113.15, 27.75], [-113.18, 27.82], [-113.53, 27.97], [-113.68, 28.32], [-114.03, 28.47], [-114.18, 28.82], [-114.25, 28.85], [-114.5, 28.75], [-114.75, 28.85], [-115.0, 28.75], [-115.53, 28.97], [-115.68, 29.32], [-116.03, 29.47], [-116.25, 30.0], [-116.15, 30.25], [-116.18, 30.32], [-116.53, 30.47], [-116.75, 31.0], [-116.65, 31.25], [-116.75, 31.5], [-116.53, 32.03]]]]}, "2023-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.53, 32.03], [-116.18, 32.18], [-116.15, 32.25], [-116.25, 32.5], [-116.03, 33.03], [-115.5, 33.25], [-115.2, 33.13], [-115.03, 33.53], [-114.5, 33.75], [-113.97, 33.53], [-113.82, 33.18], [-113.47, 33.03], [-113.32, 32.68], [-113.25, 32.65], [-113.18, 32.68], [-113.15, 32.75], [-113.25, 33.0], [-113.03, 33.53], [-112.5, 33.75], [-111.97, 33.53], [-111.75, 33.0], [-111.85, 32.75], [-111.75, 32.5], [-111.85, 32.25], [-111.82, 32.18], [-111.47, 32.03], [-111.25, 31.5], [-111.35, 31.25], [-111.25, 31.0], [-111.35, 30.75], [-111.32, 30.68], [-110.97, 30.53], [-110.75, 30.0], [-110.85, 29.75], [-110.75, 29.5], [-110.85, 29.25], [-110.75, 29.0], [-110.97, 28.47], [-111.5, 28.25], [-111.93, 28.43], [-111.75, 28.0], [-111.85, 27.75], [-111.75, 27.5], [-111.97, 26.97], [-112.5, 26.75], [-113.03, 26.97], [-113.25, 27.5], [-113.15, 27.75], [-113.18, 27.82], [-113.53, 27.97], [-113.68, 28.32], [-114.03, 28.47], [-114.18, 28.82], [-114.25, 28.85], [-114.5, 28.75], [-114.75, 28.85], [-115.0, 28.75], [-115.53, 28.97], [-115.68, 29.32], [-116.03, 29.47], [-116.25, 30.0], [-116.15, 30.25], [-116.18, 30.32], [-116.53, 30.47], [-116.75, 31.0], [-116.65, 31.25], [-116.75, 31.5], [-116.53, 32.03]]]]}, "2023-06-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.15, 31.75], [-116.25, 32.0], [-116.15, 32.25], [-116.25, 32.5], [-116.03, 33.03], [-115.5, 33.25], [-115.2, 33.13], [-115.03, 33.53], [-114.5, 33.75], [-113.97, 33.53], [-113.82, 33.18], [-113.47, 33.03], [-113.32, 32.68], [-113.25, 32.65], [-113.18, 32.68], [-113.15, 32.75], [-113.25, 33.0], [-113.03, 33.53], [-112.5, 33.75], [-111.97, 33.53], [-111.75, 33.0], [-111.85, 32.75], [-111.75, 32.5], [-111.85, 32.25], [-111.82, 32.18], [-111.47, 32.03], [-111.25, 31.5], [-111.35, 31.25], [-111.25, 31.0], [-111.35, 30.75], [-111.32, 30.68], [-110.97, 30.53], [-110.75, 30.0], [-110.85, 29.75], [-110.75, 29.5], [-110.97, 28.97], [-111.5, 28.75], [-111.75, 28.85], [-111.82, 28.82], [-111.96, 28.5], [-111.75, 28.0], [-111.85, 27.75], [-111.75, 27.5], [-111.97, 26.97], [-112.5, 26.75], [-113.03, 26.97], [-113.25, 27.5], [-113.15, 27.75], [-113.18, 27.82], [-113.53, 27.97], [-113.68, 28.32], [-114.03, 28.47], [-114.18, 28.82], [-114.53, 28.97], [-114.75, 29.5], [-114.65, 29.75], [-114.68, 29.82], [-114.75, 29.85], [-115.0, 29.75], [-115.53, 29.97], [-115.68, 30.32], [-116.03, 30.47], [-116.25, 31.0], [-116.15, 31.25], [-116.25, 31.5], [-116.15, 31.75]]]]}, "2023-06-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-115.25, 31.0], [-115.03, 31.53], [-114.5, 31.75], [-114.25, 31.65], [-114.0, 31.75], [-113.75, 31.65], [-113.5, 31.75], [-112.97, 31.53], [-112.75, 31.0], [-112.97, 30.47], [-113.32, 30.32], [-113.47, 29.97], [-114.0, 29.75], [-114.53, 29.97], [-114.68, 30.32], [-115.03, 30.47], [-115.25, 31.0]]]]}, "2023-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.0, 31.75], [-113.47, 31.53], [-113.25, 31.0], [-113.47, 30.47], [-114.0, 30.25], [-114.53, 30.47], [-114.75, 31.0], [-114.53, 31.53], [-114.0, 31.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.711564759009548}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.807219869300617}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.560749263385617, 19.859484795443848, 20.842492630177674, 21.377242068853718, 23.236312099339784, 21.52603301989666, 22.105008206233947, 22.222278681908733, 24.207924545741776, 23.388208936609146, 23.87582406787402]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.748590223462486, 14.689731287767415, 15.189786312474723, 15.180768926783287, 20.685063129073626, 15.434649322114183, 13.179974994319139, 13.773073044115506, 16.054799528984802, 23.147055351538256, 23.87582406787402]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.5796556277608573, -3.41604917985923, -3.3043235086658433, -3.290643778632227, -2.6040182913664864, -3.2250596687752675, -4.593105686307057, -4.608418992272274, -3.5905217296798844, -2.2716953107795064, -1.9703408075413336]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.811234727611861, -6.262046995155629, -5.89137499162365, -5.363910633458772, -3.3415235828529717, -6.118495371968095, -7.694045358653284, -7.711564759009548, -5.4850227586698, -2.564368218896277, -1.9703408075413336]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2405266265989918, -1.4161524086821449, -1.5478935815516341, -1.5801816973135514, -1.5663106780315204, -1.5288145147652474, -2.018561298864484, -2.0558301963214474, -1.7254785045009404, -1.8284731521505646, -1.6243562638147306]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3144057038227992, -1.6164802848523983, -1.9422189902695606, -2.2349352357904886, -2.2001390865088397, -2.072360271964144, -2.7169826572609077, -2.548915580343415, -2.58968044315535, -2.0960299294983527, -1.6243562638147306]}}