{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:39.256627", "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-Feb-27_to_2012-Mar-04_282.0_-6.0"}, "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": 2012020001493}, "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": "February 27 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 04 2012"}, "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": "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": 61537.193519010696}, "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": ["Peru"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South 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": -6.0}, "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": 282.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "282.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 280.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 283.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -6.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -3.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.53, -5.47], [-78.0, -5.25], [-77.47, -5.47], [-77.25, -6.0], [-77.35, -6.25], [-77.25, -6.5], [-77.47, -7.03], [-78.0, -7.25], [-78.53, -7.03], [-78.75, -6.5], [-78.65, -6.25], [-78.75, -6.0], [-78.53, -5.47]]]]}, "2012-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.53, -5.47], [-78.0, -5.25], [-77.47, -5.47], [-77.25, -6.0], [-77.35, -6.25], [-77.25, -6.5], [-77.47, -7.03], [-78.0, -7.25], [-78.53, -7.03], [-78.75, -6.5], [-78.65, -6.25], [-78.75, -6.0], [-78.53, -5.47]]]]}, "2012-02-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.53, -5.47], [-78.0, -5.25], [-77.47, -5.47], [-77.25, -6.0], [-77.35, -6.25], [-77.25, -6.5], [-77.47, -7.03], [-78.0, -7.25], [-78.53, -7.03], [-78.75, -6.5], [-78.65, -6.25], [-78.75, -6.0], [-78.53, -5.47]]]]}, "2012-03-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.03, -4.97], [-77.5, -4.75], [-76.97, -4.97], [-76.75, -5.5], [-76.85, -5.75], [-76.75, -6.0], [-76.97, -6.53], [-77.5, -6.75], [-78.03, -6.53], [-78.25, -6.0], [-78.15, -5.75], [-78.25, -5.5], [-78.03, -4.97]]]]}, "2012-03-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-79.65, -5.25], [-79.75, -5.0], [-79.53, -4.47], [-79.18, -4.32], [-79.03, -3.97], [-78.68, -3.82], [-78.53, -3.47], [-78.0, -3.25], [-77.47, -3.47], [-77.32, -3.82], [-76.97, -3.97], [-76.75, -4.5], [-76.85, -4.75], [-76.75, -5.0], [-76.85, -5.25], [-76.82, -5.32], [-76.47, -5.47], [-76.25, -6.0], [-76.47, -6.53], [-76.82, -6.68], [-76.97, -7.03], [-77.5, -7.25], [-78.0, -7.04], [-78.5, -7.25], [-79.03, -7.03], [-79.18, -6.68], [-79.53, -6.53], [-79.75, -6.0], [-79.65, -5.75], [-79.75, -5.5], [-79.65, -5.25]]]]}, "2012-03-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-79.65, -5.25], [-79.75, -5.0], [-79.53, -4.47], [-79.18, -4.32], [-79.03, -3.97], [-78.68, -3.82], [-78.53, -3.47], [-78.0, -3.25], [-77.47, -3.47], [-77.32, -3.82], [-76.97, -3.97], [-76.75, -4.5], [-76.85, -4.75], [-76.75, -5.0], [-76.85, -5.25], [-76.82, -5.32], [-76.47, -5.47], [-76.25, -6.0], [-76.47, -6.53], [-76.82, -6.68], [-76.97, -7.03], [-77.5, -7.25], [-78.0, -7.04], [-78.5, -7.25], [-79.03, -7.03], [-79.18, -6.68], [-79.53, -6.53], [-79.75, -6.0], [-79.65, -5.75], [-79.75, -5.5], [-79.65, -5.25]]]]}, "2012-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-79.65, -5.25], [-79.75, -5.0], [-79.53, -4.47], [-79.18, -4.32], [-79.03, -3.97], [-78.68, -3.82], [-78.53, -3.47], [-78.0, -3.25], [-77.47, -3.47], [-77.32, -3.82], [-76.97, -3.97], [-76.75, -4.5], [-76.85, -4.75], [-76.75, -5.0], [-76.85, -5.25], [-76.82, -5.32], [-76.47, -5.47], [-76.25, -6.0], [-76.47, -6.53], [-76.82, -6.68], [-76.97, -7.03], [-77.5, -7.25], [-78.0, -7.04], [-78.5, -7.25], [-79.03, -7.03], [-79.18, -6.68], [-79.53, -6.53], [-79.75, -6.0], [-79.65, -5.75], [-79.75, -5.5], [-79.65, -5.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.4066238322556046}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.522802052194247}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.51931026038983, 13.052895087816978, 13.55585440110815, 16.87510096913934, 18.426699603652082, 18.302187582102704, 18.549624530207552]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.252044193407016, 12.831029354212944, 13.480724915415237, 14.374661627463865, 12.438547920075905, 12.23702912713577, 12.297995863405674]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1465148128330327, -1.6278081485279472, -1.1555931677329738, -1.0468275283791115, -1.5794068472827718, -1.6755085040847282, -1.4308028632472327]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.2588186361809903, -1.693631217892687, -1.2347556053056792, -1.0573742021957173, -2.219055697835529, -2.4066238322556046, -2.165502157867536]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4462543887649177, -2.0032862722336775, -1.4202223577919897, -1.305273297072553, -1.808385136249396, -1.8954621818506217, -1.6197328678936125]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5361982388311541, -2.0049391166108808, -1.5698029117113592, -1.326027788231224, -2.3556576751608347, -2.513330958593675, -2.2204152889137276]}}