Arason, Pordur; Petersen, G N; Bjornsson, H (2011): Statistics of radar altitude estimates of plume-top over time intervals of 12 hours [dataset]. Icelandic Meteorological Office, Reykjavik, PANGAEA, https://doi.org/10.1594/PANGAEA.760688, In supplement to: Arason, P et al. (2011): Observations of the altitude of the volcanic plume during the eruption of Eyjafjallajökull, April–May 2010. Earth System Science Data, 3(1), 9-17, https://doi.org/10.5194/essd-3-9-2011
Always quote citation above when using data! You can download the citation in several formats below.
Coverage:
Latitude: 63.630000 * Longitude: -19.620000
Date/Time Start: 2010-04-14T12:00:00 * Date/Time End: 2010-05-24T00:00:00
Event(s):
Eyjafjallajökull * Latitude: 63.630000 * Longitude: -19.620000 * Date/Time Start: 2010-04-14T00:00:00 * Date/Time End: 2010-05-24T00:00:00 * Location: Iceland * Method/Device: Observation (OBSE)
Comment:
Radar did not detect plume when below about 2.9 km due to mountain ranges and curvature of the Earth.
Date/time (UTC) refer to the end of the time interval.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Geocode | |||
| 2 | Number of scans | Scans | # | Arason, Pordur | Radar | with clearly defined plume height |
| 3 | Number of scans | Scans | # | Arason, Pordur | Radar | where plume is clearly under minimum detection height |
| 4 | Number of scans | Scans | # | Arason, Pordur | Radar | where plume is obscured by precipitating clouds |
| 5 | Number of scans | Scans | # | Arason, Pordur | Radar | missing in 5 min |
| 6 | Number of values averaged at time interval | N | # | Arason, Pordur | Calculated | |
| 7 | Altitude, minimum | Alt min | km | Arason, Pordur | plume-top | |
| 8 | Mean, statistical | Mean | Arason, Pordur | - one standard deviation | ||
| 9 | Mean, statistical | Mean | Arason, Pordur | plume-top altitude | ||
| 10 | Mean, statistical | Mean | Arason, Pordur | + one standard deviation | ||
| 11 | Altitude, maximum | Alt max | km | Arason, Pordur | plume-top | |
| 12 | Standard deviation | Std dev | ± | Arason, Pordur | of the plume-top altitude | |
| 13 | Quartile 25 | Q25 | Arason, Pordur | of plume-top altitude, 25% of the measurements are below this value | ||
| 14 | Median, statistical | Median | Arason, Pordur | of plume-top altitude | ||
| 15 | Quartile 75 | Q75 | Arason, Pordur | of plume-top altitude |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
1120 data points
Data
| 1 Date/Time | 2 Scans [#] (with clearly defined plume he...) | 3 Scans [#] (where plume is clearly under ...) | 4 Scans [#] (where plume is obscured by pr...) | 5 Scans [#] (missing in 5 min, Radar) | 6 N [#] (Calculated) | 7 Alt min [km] (plume-top) | 8 Mean (- one standard deviation) | 9 Mean (plume-top altitude) | 10 Mean (+ one standard deviation) | 11 Alt max [km] (plume-top) | 12 Std dev [±] (of the plume-top altitude) | 13 Q25 (of plume-top altitude, 25% of...) | 14 Median (of plume-top altitude) | 15 Q75 (of plume-top altitude) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2010-04-14T12:00 | 36 | 98 | 0 | 10 | 134 | 2.5 | 1.5 | 3.8 | 6.0 | 8.8 | 2.3 | 2.5 | 2.5 | 5.3 |
| 2010-04-15T00:00 | 133 | 3 | 0 | 8 | 136 | 2.5 | 4.9 | 6.5 | 8.1 | 9.4 | 1.6 | 5.4 | 5.7 | 8.6 |
| 2010-04-15T12:00 | 117 | 4 | 0 | 23 | 121 | 2.5 | 4.7 | 5.3 | 6.0 | 6.1 | 0.7 | 5.3 | 5.4 | 5.7 |
| 2010-04-16T00:00 | 3 | 10 | 54 | 77 | 13 | 2.5 | 2.1 | 2.9 | 3.7 | 4.6 | 0.8 | 2.5 | 2.5 | 2.5 |
| 2010-04-16T12:00 | 92 | 27 | 25 | 0 | 119 | 2.5 | 3.1 | 4.5 | 5.8 | 8.6 | 1.3 | 3.9 | 5.0 | 5.3 |
| 2010-04-17T00:00 | 132 | 9 | 0 | 3 | 141 | 2.5 | 4.3 | 5.6 | 6.9 | 8.7 | 1.3 | 5.4 | 5.6 | 6.0 |
| 2010-04-17T12:00 | 144 | 0 | 0 | 0 | 144 | 4.9 | 5.0 | 6.4 | 7.8 | 8.5 | 1.4 | 5.2 | 5.5 | 8.0 |
| 2010-04-18T00:00 | 94 | 0 | 0 | 50 | 94 | 4.9 | 4.6 | 5.3 | 6.0 | 8.2 | 0.7 | 5.0 | 5.1 | 5.1 |
| 2010-04-18T12:00 | 95 | 49 | 0 | 0 | 144 | 2.5 | 2.7 | 3.9 | 5.2 | 8.5 | 1.3 | 2.5 | 4.0 | 5.1 |
| 2010-04-19T00:00 | 11 | 48 | 0 | 85 | 59 | 2.5 | 2.2 | 2.6 | 3.1 | 5.0 | 0.4 | 2.5 | 2.5 | 2.5 |
| 2010-04-19T12:00 | 3 | 141 | 0 | 0 | 144 | 2.5 | 2.3 | 2.5 | 2.7 | 4.0 | 0.2 | 2.5 | 2.5 | 2.5 |
| 2010-04-20T00:00 | 12 | 113 | 19 | 0 | 125 | 2.5 | 2.1 | 2.7 | 3.2 | 5.1 | 0.5 | 2.5 | 2.5 | 2.5 |
| 2010-04-20T12:00 | 7 | 135 | 0 | 2 | 142 | 2.5 | 2.3 | 2.5 | 2.8 | 3.9 | 0.2 | 2.5 | 2.5 | 2.5 |
| 2010-04-21T00:00 | 18 | 126 | 0 | 0 | 144 | 2.5 | 2.2 | 2.7 | 3.1 | 4.2 | 0.5 | 2.5 | 2.5 | 2.5 |
| 2010-04-21T12:00 | 0 | 144 | 0 | 0 | 144 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 0.0 | 2.5 | 2.5 | 2.5 |
| 2010-04-22T00:00 | 20 | 124 | 0 | 0 | 144 | 2.5 | 2.2 | 2.6 | 3.0 | 4.9 | 0.4 | 2.5 | 2.5 | 2.5 |
| 2010-04-22T12:00 | 22 | 122 | 0 | 0 | 144 | 2.5 | 2.3 | 2.6 | 3.0 | 4.5 | 0.4 | 2.5 | 2.5 | 2.5 |
| 2010-04-23T00:00 | 84 | 60 | 0 | 0 | 144 | 2.5 | 2.5 | 3.2 | 3.8 | 4.9 | 0.7 | 2.5 | 2.8 | 3.8 |
| 2010-04-23T12:00 | 11 | 133 | 0 | 0 | 144 | 2.5 | 2.3 | 2.6 | 2.9 | 3.8 | 0.3 | 2.5 | 2.5 | 2.5 |
| 2010-04-24T00:00 | 37 | 107 | 0 | 0 | 144 | 2.5 | 2.2 | 2.7 | 3.3 | 5.1 | 0.5 | 2.5 | 2.5 | 2.7 |
| 2010-04-24T12:00 | 14 | 130 | 0 | 0 | 144 | 2.5 | 2.3 | 2.6 | 2.8 | 3.8 | 0.3 | 2.5 | 2.5 | 2.5 |
| 2010-04-25T00:00 | 97 | 46 | 1 | 0 | 143 | 2.5 | 2.6 | 3.3 | 4.0 | 5.1 | 0.7 | 2.5 | 3.8 | 3.8 |
| 2010-04-25T12:00 | 2 | 1 | 141 | 0 | 3 | 2.5 | 2.4 | 3.0 | 3.7 | 3.8 | 0.7 | 2.6 | 2.8 | 3.3 |
| 2010-04-26T00:00 | 45 | 1 | 98 | 0 | 46 | 2.5 | 4.2 | 4.9 | 5.7 | 5.6 | 0.7 | 5.1 | 5.1 | 5.3 |
| 2010-04-26T12:00 | 135 | 2 | 7 | 0 | 137 | 2.5 | 4.1 | 4.6 | 5.2 | 5.4 | 0.5 | 4.3 | 4.9 | 5.0 |
| 2010-04-27T00:00 | 91 | 15 | 0 | 38 | 106 | 2.5 | 3.1 | 4.0 | 4.9 | 5.5 | 0.9 | 3.8 | 3.8 | 4.9 |
| 2010-04-27T12:00 | 60 | 20 | 64 | 0 | 80 | 2.5 | 2.7 | 3.3 | 3.9 | 3.9 | 0.6 | 2.6 | 3.7 | 3.8 |
| 2010-04-28T00:00 | 14 | 56 | 74 | 0 | 70 | 2.5 | 2.2 | 2.7 | 3.3 | 4.3 | 0.5 | 2.5 | 2.5 | 2.5 |
| 2010-04-28T12:00 | 5 | 4 | 129 | 6 | 9 | 2.5 | 2.6 | 5.4 | 8.2 | 8.0 | 2.8 | 2.5 | 7.4 | 7.7 |
| 2010-04-29T00:00 | 86 | 0 | 52 | 6 | 86 | 3.2 | 4.4 | 4.8 | 5.2 | 5.0 | 0.4 | 4.9 | 5.0 | 5.0 |
| 2010-04-29T12:00 | 34 | 16 | 52 | 42 | 50 | 2.5 | 2.8 | 4.1 | 5.3 | 8.0 | 1.3 | 2.5 | 4.0 | 5.0 |
| 2010-04-30T00:00 | 22 | 74 | 25 | 23 | 96 | 2.5 | 2.2 | 2.8 | 3.3 | 3.9 | 0.5 | 2.5 | 2.5 | 2.5 |
| 2010-04-30T12:00 | 3 | 104 | 0 | 37 | 107 | 2.5 | 2.5 | 2.5 | 2.6 | 2.8 | 0.0 | 2.5 | 2.5 | 2.5 |
| 2010-05-01T00:00 | 3 | 106 | 0 | 35 | 109 | 2.5 | 2.3 | 2.5 | 2.7 | 3.9 | 0.2 | 2.5 | 2.5 | 2.5 |
| 2010-05-01T12:00 | 0 | 64 | 0 | 80 | 64 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 0.0 | 2.5 | 2.5 | 2.5 |
| 2010-05-02T00:00 | 1 | 114 | 0 | 29 | 115 | 2.5 | 2.3 | 2.5 | 2.8 | 5.1 | 0.2 | 2.5 | 2.5 | 2.5 |
| 2010-05-02T12:00 | 1 | 115 | 0 | 28 | 116 | 2.5 | 2.5 | 2.5 | 2.5 | 2.8 | 0.0 | 2.5 | 2.5 | 2.5 |
| 2010-05-03T00:00 | 6 | 114 | 0 | 24 | 120 | 2.5 | 2.3 | 2.6 | 2.8 | 3.9 | 0.3 | 2.5 | 2.5 | 2.5 |
| 2010-05-03T12:00 | 1 | 55 | 64 | 24 | 56 | 2.5 | 2.5 | 2.5 | 2.5 | 2.8 | 0.0 | 2.5 | 2.5 | 2.5 |
| 2010-05-04T00:00 | 56 | 37 | 27 | 24 | 93 | 2.5 | 2.7 | 4.0 | 5.2 | 5.5 | 1.3 | 2.5 | 4.1 | 5.2 |
| 2010-05-04T12:00 | 13 | 28 | 0 | 103 | 41 | 2.5 | 2.2 | 2.9 | 3.6 | 5.1 | 0.7 | 2.5 | 2.5 | 2.8 |
| 2010-05-05T00:00 | 93 | 0 | 11 | 40 | 93 | 4.1 | 5.0 | 5.4 | 5.8 | 7.1 | 0.4 | 5.3 | 5.3 | 5.5 |
| 2010-05-05T12:00 | 120 | 0 | 0 | 24 | 120 | 4.2 | 5.1 | 5.5 | 5.8 | 6.8 | 0.3 | 5.4 | 5.5 | 5.5 |
| 2010-05-06T00:00 | 120 | 0 | 0 | 24 | 120 | 5.0 | 5.0 | 6.2 | 7.4 | 10.0 | 1.2 | 5.2 | 6.0 | 6.6 |
| 2010-05-06T12:00 | 120 | 0 | 0 | 24 | 120 | 5.0 | 5.1 | 5.2 | 5.3 | 5.5 | 0.1 | 5.1 | 5.1 | 5.2 |
| 2010-05-07T00:00 | 120 | 0 | 0 | 24 | 120 | 5.1 | 5.1 | 5.4 | 5.6 | 6.6 | 0.3 | 5.3 | 5.3 | 5.4 |
| 2010-05-07T12:00 | 120 | 0 | 0 | 24 | 120 | 4.1 | 5.0 | 5.2 | 5.4 | 5.5 | 0.2 | 5.2 | 5.2 | 5.3 |
| 2010-05-08T00:00 | 120 | 0 | 0 | 24 | 120 | 4.0 | 5.0 | 5.2 | 5.4 | 5.5 | 0.2 | 5.1 | 5.2 | 5.3 |
| 2010-05-08T12:00 | 120 | 0 | 0 | 24 | 120 | 3.9 | 4.7 | 5.0 | 5.3 | 5.4 | 0.3 | 5.0 | 5.1 | 5.1 |
| 2010-05-09T00:00 | 96 | 24 | 0 | 24 | 120 | 2.5 | 3.2 | 4.3 | 5.4 | 5.7 | 1.1 | 3.9 | 4.7 | 5.2 |
| 2010-05-09T12:00 | 116 | 4 | 0 | 24 | 120 | 2.5 | 3.7 | 4.4 | 5.1 | 5.3 | 0.7 | 3.9 | 4.2 | 5.0 |
| 2010-05-10T00:00 | 117 | 3 | 0 | 24 | 120 | 2.5 | 3.6 | 4.3 | 5.1 | 5.1 | 0.7 | 3.9 | 4.0 | 5.0 |
| 2010-05-10T12:00 | 117 | 3 | 0 | 24 | 120 | 2.5 | 3.8 | 4.5 | 5.2 | 5.5 | 0.7 | 3.9 | 5.0 | 5.0 |
| 2010-05-11T00:00 | 104 | 16 | 0 | 24 | 120 | 2.5 | 3.3 | 4.2 | 5.0 | 5.0 | 0.9 | 3.9 | 4.0 | 5.0 |
| 2010-05-11T12:00 | 66 | 54 | 0 | 24 | 120 | 2.5 | 2.5 | 3.4 | 4.4 | 5.1 | 1.0 | 2.5 | 3.9 | 3.9 |
| 2010-05-12T00:00 | 47 | 0 | 69 | 28 | 47 | 4.0 | 4.6 | 5.1 | 5.5 | 7.9 | 0.5 | 5.0 | 5.0 | 5.1 |
| 2010-05-12T12:00 | 37 | 6 | 77 | 24 | 43 | 2.5 | 3.3 | 4.1 | 4.9 | 5.3 | 0.8 | 4.0 | 4.2 | 4.7 |
| 2010-05-13T00:00 | 119 | 0 | 0 | 25 | 119 | 2.9 | 4.3 | 4.8 | 5.3 | 5.3 | 0.5 | 4.2 | 5.1 | 5.2 |
| 2010-05-13T12:00 | 120 | 0 | 0 | 24 | 120 | 4.2 | 4.9 | 5.2 | 5.5 | 7.9 | 0.3 | 5.1 | 5.2 | 5.2 |
| 2010-05-14T00:00 | 120 | 0 | 0 | 24 | 120 | 5.0 | 5.3 | 6.7 | 8.1 | 8.2 | 1.4 | 5.2 | 7.9 | 7.9 |
| 2010-05-14T12:00 | 120 | 0 | 0 | 24 | 120 | 4.0 | 5.1 | 6.6 | 8.0 | 7.9 | 1.5 | 5.0 | 7.9 | 7.9 |
| 2010-05-15T00:00 | 120 | 0 | 0 | 24 | 120 | 4.9 | 4.7 | 5.0 | 5.3 | 7.8 | 0.3 | 5.0 | 5.0 | 5.0 |
| 2010-05-15T12:00 | 120 | 0 | 0 | 24 | 120 | 4.8 | 4.5 | 5.0 | 5.5 | 7.8 | 0.5 | 4.9 | 4.9 | 5.0 |
| 2010-05-16T00:00 | 119 | 0 | 0 | 25 | 119 | 4.9 | 4.9 | 5.8 | 6.6 | 8.1 | 0.9 | 5.2 | 5.5 | 5.8 |
| 2010-05-16T12:00 | 120 | 0 | 0 | 24 | 120 | 5.3 | 5.4 | 6.6 | 7.8 | 8.1 | 1.2 | 5.5 | 5.7 | 7.9 |
| 2010-05-17T00:00 | 120 | 0 | 0 | 24 | 120 | 5.1 | 5.5 | 6.7 | 8.0 | 8.1 | 1.3 | 5.5 | 7.9 | 7.9 |
| 2010-05-17T12:00 | 120 | 0 | 0 | 24 | 120 | 5.1 | 5.2 | 6.6 | 7.9 | 7.9 | 1.3 | 5.3 | 6.7 | 7.9 |
| 2010-05-18T00:00 | 120 | 0 | 0 | 24 | 120 | 3.9 | 4.6 | 5.3 | 6.0 | 7.9 | 0.7 | 5.0 | 5.1 | 5.3 |
| 2010-05-18T12:00 | 116 | 2 | 2 | 24 | 118 | 2.5 | 4.1 | 4.8 | 5.6 | 6.0 | 0.7 | 3.9 | 5.0 | 5.3 |
| 2010-05-19T00:00 | 10 | 0 | 110 | 24 | 10 | 5.0 | 5.0 | 5.1 | 5.2 | 5.3 | 0.1 | 5.0 | 5.0 | 5.1 |
| 2010-05-19T12:00 | 73 | 0 | 47 | 24 | 73 | 3.0 | 3.8 | 4.5 | 5.1 | 5.6 | 0.6 | 3.9 | 4.7 | 4.9 |
| 2010-05-20T00:00 | 59 | 56 | 5 | 24 | 115 | 2.5 | 2.4 | 3.3 | 4.2 | 5.9 | 0.9 | 2.5 | 2.6 | 4.0 |
| 2010-05-20T12:00 | 12 | 9 | 99 | 24 | 21 | 2.5 | 2.5 | 3.5 | 4.6 | 5.2 | 1.0 | 2.5 | 3.8 | 3.9 |
| 2010-05-21T00:00 | 107 | 13 | 0 | 24 | 120 | 2.5 | 3.1 | 3.8 | 4.5 | 5.0 | 0.7 | 3.8 | 3.8 | 3.9 |
| 2010-05-21T12:00 | 51 | 69 | 0 | 24 | 120 | 2.5 | 2.3 | 3.0 | 3.7 | 5.0 | 0.7 | 2.5 | 2.5 | 3.9 |
| 2010-05-22T00:00 | 0 | 106 | 0 | 38 | 106 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 0.0 | 2.5 | 2.5 | 2.5 |
| 2010-05-22T12:00 | 0 | 48 | 0 | 96 | 48 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 0.0 | 2.5 | 2.5 | 2.5 |
| 2010-05-23T00:00 | 0 | 46 | 0 | 98 | 46 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 0.0 | 2.5 | 2.5 | 2.5 |
| 2010-05-23T12:00 | 0 | 48 | 0 | 96 | 48 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 0.0 | 2.5 | 2.5 | 2.5 |
| 2010-05-24T00:00 | 0 | 47 | 0 | 96 | 47 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 0.0 | 2.5 | 2.5 | 2.5 |