{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:55.243665", "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": "2018-Jun-16_to_2018-Jun-20_248.0_33.0"}, "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": 2018060000627}, "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 16 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 20 2018"}, "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": 72826.84283167125}, "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", "W.North-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": 33.0}, "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": 248.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "248.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 245.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 249.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 30.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 34.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.15, 33.25], [-114.25, 33.5], [-114.15, 33.75], [-114.25, 34.0], [-114.03, 34.53], [-113.68, 34.68], [-113.53, 35.03], [-113.0, 35.25], [-112.47, 35.03], [-112.32, 34.68], [-111.97, 34.53], [-111.82, 34.18], [-111.47, 34.03], [-111.32, 33.68], [-110.97, 33.53], [-110.82, 33.18], [-110.47, 33.03], [-110.25, 32.5], [-110.35, 32.25], [-110.25, 32.0], [-110.47, 31.47], [-111.0, 31.25], [-111.25, 31.35], [-111.5, 31.25], [-111.75, 31.35], [-111.82, 31.32], [-111.97, 30.97], [-112.5, 30.75], [-113.03, 30.97], [-113.18, 31.32], [-113.53, 31.47], [-113.68, 31.82], [-114.03, 31.97], [-114.25, 32.5], [-114.15, 32.75], [-114.25, 33.0], [-114.15, 33.25]]]]}, "2018-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.15, 33.25], [-114.25, 33.5], [-114.15, 33.75], [-114.25, 34.0], [-114.03, 34.53], [-113.68, 34.68], [-113.53, 35.03], [-113.0, 35.25], [-112.47, 35.03], [-112.32, 34.68], [-111.97, 34.53], [-111.82, 34.18], [-111.47, 34.03], [-111.32, 33.68], [-110.97, 33.53], [-110.82, 33.18], [-110.47, 33.03], [-110.25, 32.5], [-110.35, 32.25], [-110.25, 32.0], [-110.47, 31.47], [-111.0, 31.25], [-111.25, 31.35], [-111.5, 31.25], [-111.75, 31.35], [-111.82, 31.32], [-111.97, 30.97], [-112.5, 30.75], [-112.75, 30.85], [-112.82, 30.82], [-112.97, 30.47], [-113.5, 30.25], [-114.03, 30.47], [-114.25, 31.0], [-114.03, 31.53], [-113.68, 31.68], [-113.65, 31.75], [-113.68, 31.82], [-114.03, 31.97], [-114.25, 32.5], [-114.15, 32.75], [-114.25, 33.0], [-114.15, 33.25]]]]}, "2018-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.15, 33.25], [-114.25, 33.5], [-114.15, 33.75], [-114.25, 34.0], [-114.03, 34.53], [-113.68, 34.68], [-113.53, 35.03], [-113.0, 35.25], [-112.47, 35.03], [-112.32, 34.68], [-111.97, 34.53], [-111.82, 34.18], [-111.47, 34.03], [-111.32, 33.68], [-110.97, 33.53], [-110.82, 33.18], [-110.47, 33.03], [-110.25, 32.5], [-110.35, 32.25], [-110.25, 32.0], [-110.47, 31.47], [-111.0, 31.25], [-111.25, 31.35], [-111.5, 31.25], [-111.75, 31.35], [-111.82, 31.32], [-111.97, 30.97], [-112.5, 30.75], [-112.75, 30.85], [-112.82, 30.82], [-112.97, 30.47], [-113.5, 30.25], [-113.75, 30.35], [-114.0, 30.25], [-114.53, 30.47], [-114.75, 31.0], [-114.53, 31.53], [-114.0, 31.75], [-113.75, 31.65], [-113.68, 31.68], [-113.65, 31.75], [-113.68, 31.82], [-114.03, 31.97], [-114.25, 32.5], [-114.15, 32.75], [-114.25, 33.0], [-114.15, 33.25]]]]}, "2018-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.53, 30.47], [-114.75, 31.0], [-114.53, 31.53], [-114.0, 31.75], [-113.75, 31.65], [-113.68, 31.68], [-113.54, 32.0], [-113.75, 32.5], [-113.53, 33.03], [-113.18, 33.18], [-113.12, 33.3], [-113.53, 33.47], [-113.75, 34.0], [-113.53, 34.53], [-113.0, 34.75], [-112.47, 34.53], [-112.25, 34.0], [-112.37, 33.7], [-112.25, 33.65], [-112.0, 33.75], [-111.75, 33.65], [-111.5, 33.75], [-110.97, 33.53], [-110.82, 33.18], [-110.47, 33.03], [-110.25, 32.5], [-110.35, 32.25], [-110.25, 32.0], [-110.47, 31.47], [-111.0, 31.25], [-111.25, 31.35], [-111.5, 31.25], 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25.294662859785376, 26.72537455065111, 27.076860398220845, 26.929761359712757]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.441495932506484, 21.659034648132263, 22.90353237597776, 24.411880929074016, 24.863624309810177]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.043457100780877, -5.615909252275997, -4.226207271677727, -3.5888380184363093, -2.8688209061985503]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.744352318144422, -7.0418982421098235, -6.271594412143713, -5.1437495992008735, -3.985389996163633]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.3821096606069214, -2.2641167976775214, -1.73267145860241, -1.549942978865468, -1.4948387911629923]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.2236793939614, -2.6817784671178084, -2.385816130495393, -1.9751954295544076, -1.5805746353941361]}}