Changes between Version 84 and Version 85 of Status


Ignore:
Timestamp:
Oct 15, 2015 1:25:29 PM (4 years ago)
Author:
gaew
Comment:

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  • Status

    v84 v85  
    44
    55Please contact Dr Gary Llewellyn (Science / operations coordinator) if you have any questions or concerns: gaew@nerc.ac.uk (01452 859945 or 07919 697851)
     6
     7== ARSF Sit Rep 07.05.15 ==
     8'' Following the replacement of the nose-wheel tires solved the problem and we were able to collect data from the EUFAR Holuhraun site late on the 4th of September. Cloud prevented completion of this project. However, on the following day (05.09.15) we returned and collected VNIR, SWIR and LWIR hyperspectral data (Fenix and Owl), LiDAR and digital photography. This completed this project. On the return flight we were able to collect LiDAR data on from three of the remaining four flight lines from the Hekla site.''
     9
     10''The weather prospects for the following days (06.09.15) were very poor and we laid plans to depart to the UK but conscious of the changeable nature of the Icelandic weather we were able to delay and when conditions contrary to the forecast emerged at the study site were able to fully support both areas of interest with all instruments. Consequently data were collected in support of all the projects and the team (and aircraft) returned to Cambridge today (07.09.15). The return flight was approximately 6 hours and 30 minutes with a fuel stop at Prestwick part way.''
     11
     12== ARSF Sit rep 04.09.15 ==
     13''On the Sunday (30.08.15) we were able to conduct a 2 hour survey over Hekla but the conditions were not good and the following day (31.08.15) the weather conditions did not allow any data to be collected. However, on Tuesday the 1st of September conditions improved. We conducted a 5 and a half hour survey over Hekla from early morning until early afternoon. Despite the Owl’s thermal calibration failing and heavy rain in parts the survey over this site is now substantively complete. The LiDAR coverage is good and we will endeavor to complete the last four lines if the weather and time allow. Flight data possibilities have been discussed fully with the PI and survey objectives have been matched to available weather opportunities.'' 
     14
     15'' In the afternoon we were able to collect VNIR & SWIR hyperspectral data (Fenix), LiDAR and digital photography from Holuhraun. This EUFAR funded project is located at a cooling lava flow. The surface is dark and the illumination was low. Consequently the signal-to noise ratio for the hyperspectral systems was also low. Nevertheless, during the 3 and a half hour survey approximately two third of this site were surveyed before incoming clouds forced us to return to Reykjavik Airport. ''
     16
     17''Unfortunately a problem with the aircraft became evident during take-off and landings. Minor investigations were made between the flights but these did not solve the problem which was judged potentially serious enough to require an engineer to attend to replace the nose-wheel tires. These were ordered from the UK, arrived yesterday (03.09.15) and should be fitted this morning. If this solves the problem we hope to return to Holuraun this afternoon (04.09.15). Nevertheless, the break in operations has been matched with bad weather over all our study sites but did allow us to property download and back-up data and allowed the Hekla field team to view the aircraft and instruments yesterday afternoon.''
     18 
     19== ARSF Sit rep 29.08.15 ==
     20''After a series of delays, partially due to poor weather in Iceland, the aircraft deployed to Reykjavik on Thursday the 27th of August. This was to support an EAA Rannis grant for airborne data from Hekla and two EUFAR funded projects. Immediately prior to departure a BBSRC grant (to study ash die back) was supported but two other grant funded projects were not supported due to persistent bad weather in the UK but we hope to do so once we return from Iceland.
     21Yesterday (28.08.15) we able to conduct our in-county preparations and today (29.08.15) we managed two surveys over Hekla with a combined flight time of almost 7 hours during which we completed approximately half the project (28 of 54 flight lines) including the challenging top of Hekla than is normally covered in cloud. LiDAR, digital photography, Fenix (VNIR and SWIR) data were collected as well as selected areas of Owl (LWIR).''
     22
     23''Tomorrow, conditions are forecast to be even better. We hope to collect data from Hekla and from Siglufjordur and Moafellshyma, to the North West of Iceland.''
     24''The aircraft and instruments are performing well and the three person crew remain well but very busy. The scenery remains stunning and the Icelandic people very friendly.''
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    1837''A deterioration in weather conditions in Italy prevented us from collecting data on the Wednesday. Thursday morning started with thick cloud and heavy rain and progressed to overcast with periodic showers. These poor conditions were forecast to continue for several days.  Therefore, we returned back to the UK in readiness for UK data acquisitions this week.''
    1938
    20 ''The forecasts for this week are not encouraging for today or tomorrow but we are monitoring for any improvement.
    21 However, there are indications that some areas in Southern Scotland, Cumbria and Wales may be clear for data collection on Thursday. This may allow some hope for GB13-08, GB13-05, GB13-09 (subject to logistics / discussions with the research team) or possibly BGS08-01 (subject to tides and discussions with the research team).''
     39''The forecasts for this week are not encouraging for today or tomorrow but we are monitoring for any improvement. However, there are indications that some areas in Southern Scotland, Cumbria and Wales may be clear for data collection on Thursday. This may allow some hope for GB13-08, GB13-05, GB13-09 (subject to logistics / discussions with the research team) or possibly BGS08-01 (subject to tides and discussions with the research team).''
    2240
    2341''The relative close proximity (to the airfield at Gloucester) and ease of access for GB13-06 and GB13-10 may allow unexpected short-timescale changes in the weather to be exploited.''