Na Lidar

Before 2019, the Na Lidar was operated on a campaign basis, typically 3-4 times per year, with 2-3 weeks per campaign. Since 2019, the Lidar is being operated for about two weeks every month around the low moon period.

Raw photon count data are processed off-line and preliminary results are shown here. The data summary is in the following table listed for each operation period.

Click on the period at the left to see the list of nights and contour plots of the measurements.

ALO Lidar Data Summary
Period Total Nights Total Hours Average CPS*
2014 May546.5709
2014 Aug-Sep18141.2764
2015 Jan-Feb16114.4559
2015 Apr14132.4556
2015 July1199.7554
2015 Oct-Nov866.0700
2016 Feb-Mar19153.5540
2016 June654.5760
2016 Oct-Nov16133.7582
2017 Apr874.8609
2017 Nov970.7299
2017 Dec1286.6213
2018 Jan12105.6329
2019 Jan-Feb16141.1501
2019 Mar1084.2385
2019 Mar-Apr12125.0396
2019 Apr-May11114.4351
2019 May-Jun991.1354
2019 Jun-Jul10109.2411
2019 Jul-Aug13141.2390
Total2342075.2 

* CPS - Counts Per Shot, a measure of the signal level, hence the data quality. This is averaged from the median CPS values from each night.

Monthly Total Data Hours and Nights
 JanFebMarAprMayJunJulAugSepOctNovDecTotal
Hours
(with u,v)
231.4
(31.6)
166.0
(44.0)
211.3
(117.1)
322.2
(249.1)
158.9
(112.4)
171.8
(171.8)
248.3
(248.3)
140.1
(67.2)
68.3
(0.0)
70.8
(64.7)
199.6
(199.6)
86.6
(72.6)
2075.2
(1378.4)
Nights
(with u,v)
29
(4)
20
(6)
25
(14)
33
(25)
16
(11)
17
(17)
25
(25)
17
(6)
7
(0)
9
(8)
24
(24)
12
(10)
234
(150)