{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:10.217145", "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-Apr-16_to_2012-Apr-21_269.5_13.0"}, "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": 2012040000927}, "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": "April 16 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 21 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": 75333.88733341516}, "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": ["Guatemala"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": 13.0}, "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": 269.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "269.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 266.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 269.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 11.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 14.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-90.5, 13.25], [-89.97, 13.03], [-89.75, 12.5], [-89.97, 11.97], [-90.5, 11.75], [-91.03, 11.97], [-91.25, 12.5], [-91.03, 13.03], [-90.5, 13.25]]]]}, "2012-04-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-94.25, 12.5], [-94.03, 13.03], [-93.68, 13.18], [-93.53, 13.53], [-93.0, 13.75], [-92.75, 13.65], [-92.68, 13.68], [-92.53, 14.03], [-92.0, 14.25], [-91.5, 14.04], [-91.0, 14.25], [-90.75, 14.15], [-90.5, 14.25], [-89.97, 14.03], [-89.75, 13.5], [-89.85, 13.25], [-89.75, 13.0], [-89.85, 12.75], [-89.75, 12.5], [-89.97, 11.97], [-90.32, 11.82], [-90.47, 11.47], [-91.0, 11.25], [-91.25, 11.35], [-91.5, 11.25], [-91.75, 11.35], [-92.0, 11.25], [-92.25, 11.35], [-92.5, 11.25], [-92.75, 11.35], [-93.0, 11.25], [-93.53, 11.47], [-93.68, 11.82], [-94.03, 11.97], [-94.25, 12.5]]]]}, "2012-04-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-94.25, 12.5], [-94.03, 13.03], [-93.68, 13.18], [-93.53, 13.53], [-93.0, 13.75], [-92.75, 13.65], [-92.68, 13.68], [-92.65, 13.75], [-92.75, 14.0], [-92.53, 14.53], [-92.0, 14.75], [-91.75, 14.65], [-91.5, 14.75], [-91.25, 14.65], [-91.0, 14.75], [-90.47, 14.53], [-90.32, 14.18], [-89.97, 14.03], [-89.75, 13.5], [-89.85, 13.25], [-89.75, 13.0], [-89.85, 12.75], [-89.75, 12.5], [-89.97, 11.97], [-90.32, 11.82], [-90.47, 11.47], [-91.0, 11.25], [-91.25, 11.35], [-91.5, 11.25], [-91.75, 11.35], [-92.0, 11.25], [-92.25, 11.35], [-92.5, 11.25], [-92.75, 11.35], [-93.0, 11.25], [-93.53, 11.47], [-93.68, 11.82], [-94.03, 11.97], [-94.25, 12.5]]]]}, "2012-04-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-94.25, 12.5], [-94.03, 13.03], [-93.68, 13.18], [-93.53, 13.53], [-93.0, 13.75], [-92.75, 13.65], [-92.68, 13.68], [-92.65, 13.75], [-92.75, 14.0], [-92.53, 14.53], [-92.0, 14.75], [-91.75, 14.65], [-91.5, 14.75], [-91.25, 14.65], [-91.0, 14.75], [-90.47, 14.53], [-90.32, 14.18], [-89.97, 14.03], [-89.75, 13.5], [-89.85, 13.25], [-89.75, 13.0], [-89.97, 12.47], [-90.32, 12.32], [-90.35, 12.25], [-90.25, 12.0], [-90.47, 11.47], [-91.0, 11.25], [-91.25, 11.35], [-91.5, 11.25], [-91.75, 11.35], [-92.0, 11.25], [-92.25, 11.35], [-92.5, 11.25], [-92.75, 11.35], [-93.0, 11.25], [-93.53, 11.47], [-93.68, 11.82], [-94.03, 11.97], [-94.25, 12.5]]]]}, "2012-04-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-93.65, 12.75], [-93.75, 13.0], [-93.53, 13.53], [-93.0, 13.75], [-92.75, 13.65], [-92.68, 13.68], [-92.65, 13.75], [-92.75, 14.0], [-92.53, 14.53], [-92.0, 14.75], [-91.75, 14.65], [-91.5, 14.75], [-91.25, 14.65], [-91.0, 14.75], [-90.47, 14.53], [-90.32, 14.18], [-89.97, 14.03], [-89.75, 13.5], [-89.85, 13.25], [-89.75, 13.0], [-89.97, 12.47], [-90.32, 12.32], [-90.35, 12.25], [-90.25, 12.0], [-90.47, 11.47], [-91.0, 11.25], [-91.25, 11.35], [-91.5, 11.25], [-91.75, 11.35], [-92.0, 11.25], [-92.25, 11.35], [-92.5, 11.25], [-92.75, 11.35], [-93.0, 11.25], [-93.53, 11.47], [-93.75, 12.0], [-93.65, 12.25], [-93.75, 12.5], [-93.65, 12.75]]]]}, "2012-04-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-90.5, 13.75], [-89.97, 13.53], [-89.75, 13.0], [-89.97, 12.47], [-90.5, 12.25], [-91.03, 12.47], [-91.25, 13.0], [-91.03, 13.53], [-90.5, 13.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.6796397263468634}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.9487000986431284}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.46213235766487, 27.485842278379437, 27.46489582459401, 27.508145999009116, 27.481648627278048, 27.805749644787568]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.46213235766487, 27.355740394287864, 27.027559778949524, 26.977239255730694, 27.1753432102974, 27.805749644787568]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.8053259623449094, -0.9025553211051991, -0.9543989811092161, -0.9429294123824713, -1.004090767515201, -0.7831535877837723]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.8053259623449094, -1.0128688281432119, -1.3697099801257764, -1.6796397263468634, -1.3892497505427173, -0.7831535877837723]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4615328138078478, -1.7687555137961006, -1.820992865109733, -1.8181810914753704, -1.8779414765544649, -1.3556625070467014]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4615328138078478, -2.0675059070316903, -2.159173859667424, -2.6217129459306077, -2.4276090664742123, -1.3556625070467014]}}