{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:44.031779", "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": "2017-Dec-08_to_2017-Dec-14_259.0_44.5"}, "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": 2017120001666}, "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": "December 08 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 14 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 72761.29336828088}, "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": ["United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.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": []}, "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": 44.5}, "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": 259.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "259.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 256.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 259.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 45.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-12-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-104.25, 40.5], [-104.03, 41.03], [-103.5, 41.25], [-103.25, 41.15], [-103.0, 41.25], [-102.47, 41.03], [-102.25, 40.5], [-102.47, 39.97], [-103.0, 39.75], [-103.25, 39.85], [-103.5, 39.75], [-104.03, 39.97], [-104.25, 40.5]]], [[[-103.68, 44.18], [-103.53, 44.53], [-103.0, 44.75], [-102.75, 44.65], [-102.5, 44.75], [-101.97, 44.53], [-101.75, 44.0], [-101.97, 43.47], [-102.5, 43.25], [-102.75, 43.35], [-102.82, 43.32], [-102.85, 43.25], [-102.75, 43.0], [-102.97, 42.47], [-103.5, 42.25], [-104.03, 42.47], [-104.25, 43.0], [-104.15, 43.25], [-104.25, 43.5], [-104.03, 44.03], [-103.68, 44.18]]]]}, "2017-12-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-104.03, 41.53], [-103.62, 41.7], [-103.68, 41.82], [-104.03, 41.97], [-104.25, 42.5], [-104.15, 42.75], [-104.25, 43.0], [-104.15, 43.25], [-104.25, 43.5], [-104.04, 44.0], [-104.25, 44.5], [-104.15, 44.75], [-104.25, 45.0], [-104.03, 45.53], [-103.5, 45.75], [-103.25, 45.65], [-103.0, 45.75], [-102.75, 45.65], [-102.5, 45.75], [-102.25, 45.65], [-102.0, 45.75], [-101.75, 45.65], [-101.5, 45.75], [-100.97, 45.53], [-100.75, 45.0], [-100.85, 44.75], [-100.75, 44.5], [-100.97, 43.97], [-101.5, 43.75], [-101.75, 43.85], [-101.82, 43.82], [-101.97, 43.47], [-102.37, 43.3], [-102.25, 43.0], [-102.46, 42.5], [-102.32, 42.18], [-102.25, 42.15], [-102.0, 42.25], [-101.47, 42.03], [-101.25, 41.5], [-101.35, 41.25], [-101.32, 41.18], [-100.97, 41.03], [-100.75, 40.5], [-100.85, 40.25], [-100.75, 40.0], [-100.97, 39.47], [-101.5, 39.25], [-101.75, 39.35], [-102.0, 39.25], [-102.25, 39.35], [-102.5, 39.25], [-103.03, 39.47], [-103.18, 39.82], [-103.25, 39.85], [-103.5, 39.75], [-104.03, 39.97], [-104.25, 40.5], [-104.15, 40.75], [-104.25, 41.0], [-104.03, 41.53]]]]}, "2017-12-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-104.03, 41.53], [-103.62, 41.7], [-103.68, 41.82], [-104.03, 41.97], [-104.25, 42.5], [-104.15, 42.75], [-104.25, 43.0], [-104.15, 43.25], [-104.25, 43.5], [-104.04, 44.0], [-104.25, 44.5], [-104.15, 44.75], [-104.25, 45.0], [-104.03, 45.53], [-103.5, 45.75], [-103.25, 45.65], [-103.0, 45.75], [-102.75, 45.65], [-102.5, 45.75], [-102.25, 45.65], [-102.0, 45.75], [-101.75, 45.65], [-101.5, 45.75], [-100.97, 45.53], [-100.82, 45.18], [-100.47, 45.03], [-100.25, 44.5], [-100.47, 43.97], [-101.0, 43.75], [-101.25, 43.85], [-101.5, 43.75], [-101.75, 43.85], [-101.82, 43.82], [-101.97, 43.47], [-102.37, 43.3], [-102.25, 43.0], [-102.46, 42.5], [-102.32, 42.18], [-102.25, 42.15], [-102.0, 42.25], [-101.47, 42.03], [-101.25, 41.5], [-101.35, 41.25], [-101.32, 41.18], [-100.97, 41.03], [-100.75, 40.5], [-100.85, 40.25], [-100.75, 40.0], [-100.97, 39.47], [-101.5, 39.25], [-101.75, 39.35], [-102.0, 39.25], [-102.25, 39.35], [-102.5, 39.25], [-103.03, 39.47], [-103.18, 39.82], [-103.25, 39.85], [-103.5, 39.75], [-104.03, 39.97], [-104.25, 40.5], [-104.15, 40.75], [-104.25, 41.0], [-104.03, 41.53]]]]}, "2017-12-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-104.03, 41.53], [-103.62, 41.7], [-103.68, 41.82], [-104.03, 41.97], [-104.25, 42.5], [-104.15, 42.75], [-104.25, 43.0], [-104.15, 43.25], [-104.25, 43.5], [-104.04, 44.0], [-104.25, 44.5], [-104.15, 44.75], [-104.25, 45.0], [-104.03, 45.53], [-103.5, 45.75], [-103.25, 45.65], [-103.0, 45.75], [-102.75, 45.65], [-102.5, 45.75], [-102.25, 45.65], [-102.0, 45.75], [-101.75, 45.65], [-101.5, 45.75], [-100.97, 45.53], [-100.82, 45.18], [-100.47, 45.03], [-100.25, 44.5], [-100.47, 43.97], [-101.0, 43.75], [-101.25, 43.85], [-101.5, 43.75], [-101.75, 43.85], [-101.82, 43.82], [-101.97, 43.47], [-102.37, 43.3], [-102.25, 43.0], [-102.46, 42.5], [-102.32, 42.18], [-102.25, 42.15], [-102.0, 42.25], [-101.47, 42.03], [-101.25, 41.5], [-101.35, 41.25], [-101.32, 41.18], [-100.97, 41.03], [-100.75, 40.5], [-100.85, 40.25], [-100.75, 40.0], [-100.97, 39.47], [-101.5, 39.25], [-101.75, 39.35], [-102.0, 39.25], [-102.25, 39.35], [-102.5, 39.25], [-103.03, 39.47], [-103.18, 39.82], [-103.25, 39.85], [-103.5, 39.75], [-104.03, 39.97], [-104.25, 40.5], [-104.15, 40.75], [-104.25, 41.0], [-104.03, 41.53]]]]}, "2017-12-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.0, 45.25], [-100.47, 45.03], [-100.25, 44.5], [-100.47, 43.97], [-101.0, 43.75], [-101.53, 43.97], [-101.75, 44.5], [-101.53, 45.03], [-101.0, 45.25]]]]}, "2017-12-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.0, 45.25], [-100.47, 45.03], [-100.25, 44.5], [-100.47, 43.97], [-101.0, 43.75], [-101.53, 43.97], [-101.75, 44.5], [-101.53, 45.03], [-101.0, 45.25]]]]}, "2017-12-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.0, 45.25], [-100.47, 45.03], [-100.25, 44.5], [-100.47, 43.97], [-101.0, 43.75], [-101.53, 43.97], [-101.75, 44.5], [-101.53, 45.03], [-101.0, 45.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.653024079658735}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 8.644495035355844}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [5.491370510874162, 5.793740284429703, 7.529042629621074, 7.046777271075655, 2.2785293923203085, 7.734486541725573, 2.349448117896088]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.748178794530645, 8.431810313815333, 10.674860800558065, 7.994565564909351, 2.2785293923203085, 7.734486541725573, 2.349448117896088]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.5635485339320025, 7.919413762366021, 9.405610569929603, 8.797986213811193, 6.632727671783982, 12.1295385203411, 6.867002568238661]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.188442364336822, 9.127255359128696, 12.653024079658735, 11.113931956650674, 6.632727671783982, 12.1295385203411, 6.867002568238661]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2331259027985995, 1.2838823316733916, 1.5217861068841694, 1.4632715327567412, 1.0279053755019631, 1.8738881740647322, 1.0789625085255905]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2942842992183978, 1.5808121195262603, 2.029107175123379, 1.7068956374251687, 1.0279053755019631, 1.8738881740647322, 1.0789625085255905]}}