These notes are for the team to document technical information about the deployment.
Starting 7:10am LT, I did some scans to ping the tower:
Test 1:
Bearing 230, scan at 20 degree and azimuth from 125 to 137 in steps of 0.25, tower was hit at around 132
Test 2:
Bearing 234, scan at 20 degree and azimuth from 125 to 137 in steps of 0.25, tower was hit at around 136
These tests were finished by ~7:25 am and DL was then staring again at 132.5, 23.5 with bearing of 230
Locations of Instruments at Orange Site:
| Name | Easting | Northing | Height |
|---|---|---|---|
| OUCLAMPSAERI | 33953.491 | 5007.434 | 296.645 |
| OUCLAMPSLIDAR | 33956.031 | 4997.843 | 296.235 |
| OUCLAMPSMWR | 33948.340 | 5004.683 | 296.140 |
| CU V1 49 | 33954.637 | 5002.003 | 295.848 |
| CU TLS | 33981.840 | 5004.066 | 298.404 |
| CORNELLHALO | 34001.725 | 5116.444 | 309.514 |
| CORNELLZEPHIR423 | 33996.025 | 5117.957 | 309.096 |
| ND HALO ORANGE | 34007.998 | 5132.015 | 311.110 |
| NCAR VW DIAL EAS | 33998.695 | 5126.678 | 310.490 |
| CU V1 68 BEEHIVE | 34910.565 | 5638.862 | 259.672 |
The initial bearing for our lidar was 230 deg, which was measured at the beginning of the experiment. Today (20170615), we remeasured and the bearing was 234deg. This agrees more with the coordinates above, so a coordinate rotation on the data may be necessary to correct wind speeds and directions on the VAD profiles.
For the lidar comparison, we were instructed to aim 1m above the 100m sonic on tower 25 (trSE_09). These are the coordinates:
Easting: 34152.59m
Northing: 4844.49m
Height: 403.75m
Using the all these values, the az and elev should be 227.96 and 23.34, respectively. Due to the wrong heading, we used 132.5 and 23.5 after some guessing and checking.
INSTRUMENT STATUS: All good.
WEATHER INFO: It’s HOT. Today’s max T will be around 33 C. Winds will be light and the sky will be clear. In general, winds will veer to the N/NW. Strong inversion expected overnight. Tomorrow will continue to be hot, dry, and clear. Winds will start S/SW before again veering N/NW.
PREVIOUS DAY OPS: Began tearing off the bottom of the AERI pallets. Science meeting with all PIs.
SITE PHOTOS: None
NEXT DAY OPS: Finish up AERI pallet repairs.
AUTHOR: Tyler
INSTRUMENT STATUS: All good.
WEATHER INFO: Today will be quite dry with some high clouds. Winds are predicted to turn SW before veering to the NW late this afternoon. Light and variable winds are expected overnight and a good surface inversion is expected. Tomorrow will continue to be very dry. Winds will continue to be weak tomorrow morning before increasing in the afternoon. SW/W winds are expected in the late morning/early afternoon but models disagree on the timing. They will veer NW after that.
PREVIOUS DAY OPS: Recorded our lat/lon with a highly accurate GPS this morning. A Supersonde IOP is in progress to capture the evening transition (will launch at 3pm, 9pm, and 3am) . CU and ARL plan to fly tonight and ND plan to release extra sondes as well.
SITE PHOTOS: None
NEXT DAY OPS: If all goes well, may have another EET IOP tomorrow.
AUTHOR: Tyler
INSTRUMENT STATUS: Lidar automatically shut down ~1400-1530z due to overheating. Everything else good
WEATHER INFO:
Today wind speeds will be from the NW and decreasing in speed in the late afternoon. An inversion is expected overnight. High clouds expected through most of today. Tmax ~36C. Tomorrow, expect light NW winds, with some SW/W winds in the afternoon. High clouds possible through tomorrow. Tmax ~32C. No precip expected through the weekend, so the fire risk is extreme. The next chance of precip will be around June 13
PREVIOUS DAY OPS: Removed the reflective insulation from the lidar. It seemed to make the internal temperature warmer instead of cooler.
SITE PHOTOS: None
NEXT DAY OPS: Will have the instruments locations recorded with high precision GPS in the morning.
AUTHOR: Tyler
INSTRUMENT STATUS: Shut lidar down around 2:30 pm local time due to a high internal temperature. Turned back on around 7pm.
WEATHER INFO:
Today: Clear sky conditions. Very light wind were observed at Proenca a Nova over night, shifting to NE in the morning. Northerly winds less than 4 m/s gusting at < 8 m/s are forecasted for the afternoon, increasing to 7 m/s in the late afternoon; at night winds will be light and variable. A nice inversion is expected during the night. No precipitation, very low RH at all levels. Tmax 34ºC
Tomorrow: Possibility of high clouds, developing medium clouds from early afternoon. Winds will be temporarily SW between 12-15 UTC (< 4 m/s), becoming NW ~ 7 m/s during late afternoon (16-19 UTC). Tmax 35ºC
PREVIOUS DAY OPS: 9pm extra sonde was scrubbed. Most lidars were shut down in the afternoon due to overheating. Goal of the Supersonde IOP was to capture the full evolution of boundary layer, but without lidar support, the last sonde didn’t make sense.
SITE PHOTOS: None
NEXT DAY OPS: Nothing big planned. Will be monitoring the lidar temperature throughout the day.
AUTHOR: Tyler
INSTRUMENT STATUS: All good. Lidar started to get a bit warm
WEATHER INFO: Clear sky expected today. NW to NE winds near midnight. Tmax expected to be ~24C. An inversion is expected overnight. Tomorrow also should be clear. Winds will be from the N/NE during the day, again shifted to the NE overnight. Tmax ~ 32C.
PREVIOUS DAY OPS: Nothing big.
SITE PHOTOS: None
NEXT DAY OPS: Extra sondes will be launched at 3am, 9am, 3pm, and 9pm in a supersonde IOP to try and catch the transition of the winds. CU and ARL will fly tonight as well to catch any waves that develop with the NE flow. I will add some reflective insulation to the lidar at the 3am launch to try and keep it cooler in the heat.
AUTHOR: Tyler
INSTRUMENT STATUS: All good. AERI ingest had a slight hiccup today, but it turned out to be a quick fix.
WEATHER INFO: Front will pass through later today. Today is expected to have clear skies, though low level clouds are possible after 21Z. Most of the day will have NW winds, though W/SW winds are expected overnight. Tmax will be ~27C. Tomorrow will be mostly clear with some clouds in the morning. Increasing N/NW winds are expected in the afternoon. Slight chance of precipitation.
PREVIOUS DAY OPS: Changed wind profile angle back to 45 deg around 9 pm local time since the 35 deg one didn’t look that great. This introduced a gap in the ppis/rhis around this time.
SITE PHOTOS: None
NEXT DAY OPS: Going to work with Ed to find some lumber for the AERI pallets.
AUTHOR: Tyler
INSTRUMENT STATUS: All good.
WEATHER INFO:
Today: Mainly clear sky. N/NW wind increasing 9/11 m/s gusts ~ 15m/s. Tomorrow: Cold front approaching in the evening. High level clouds approaching. Low level clouds possible after 1800 UTC. N/NW wind, increasing to 6/8 m/s in the afternoon, with gusts ~ 10 m/s
PREVIOUS DAY OPS: Exploration day
SITE PHOTOS: None
NEXT DAY OPS: None.
AUTHOR: Tyler
INSTRUMENT STATUS: All good.
WEATHER INFO: A weak frontal system is still approaching the coast. Today, clear sky and a Tmax of 32 C are expected. SW winds were forecast for a short period late this morning. Low level moisture will increase through the day. Wind will start W and shift NW. There’s a small chance of fog or low stratus overnight. Tomorrow, NW winds are expected in the afternoon. The high will be slightly cooler ~29 C. Mid/high level clouds expected in the afternoon. Fire risk continues to increase through the weekend and there is not precipitation expected. Highs will decrease for a couple days before ramping back up Monday through Wednesday.
PREVIOUS DAY OPS: Supersonde IOP. Balloons were launched to capture the morning transition at 9pm, 3am and 9am. The 3am launch was launched alongside the CU TLS. ND launched additional sondes as well. Two were at the George site (7UTC and 11UTC), one was from the other ridge (~840UTC). There should be a good comparison dataset between the CU 11UTC launch and the regular 11UTC.
SITE PHOTOS: None
NEXT DAY OPS: None. Off day for us 🙂
AUTHOR: Tyler