BritishAntarcticSurvey

AutomaticWeatherStationNetwork2017/18SeasonReview

MairiSimms,SteveColwell,Rosey Grant,DanRylett

TheSummer2017/18Team

Rothera Halley

MairiSimms JonShanklinDanRylett Tom“Barney”Barningham

Thankstothewholeteamfortheireffortsthispastseason!

Rothera

ButlerIsland

FossilBluff

LimbertSkyBlu

Baldrick

HalleySites

BASmannedstation

BASAWS

BASmannedstation(summeronly)

BASAWSNetwork

ØAWSatHalleyV

ØAWSatHalley6sendingSYNOPStoGTS

ØAWSatHalleySite6a

BASAWSNetworkStartofthe2017/18season

HalleyVsite

Halley6asite

Halley6site

Koni Steffan AWS

BASmannedstation

BASAWS

BASmannedstation(summeronly)

AWSNetwork

++

+

+ Non-BASAWSIMAUSites(UniversityofUtrecht)

DismalIsland(UniversityofWisconsin)

+

• CapabilityofsendingSYNOPStoGTS

• Nocapabilityatthistime

AWSNetwork

++

+

+

Ø Propvane, sonic ranging snow accumulation sensor, HMP temperature andhumidity sensor, PRT air temperature sensor, pressure sensor

Ø Powered by two or four x 100Ah 12V batteries (buried), charged by solarpanel.

Ø Campbell Scientific CR1000 data loggers.

Ø 10 minute averaged data saved to card.

Ø 10 minute averaged data are transmitted via SBD Iridium every three hours.

Ø Complete data set is sent via Iridium once a week.

BASAWSNetwork

Ø FossilBluff– Condensationinloggerbox

Ø Limbert – Wholesystem(includingbatteries)replaced.

ØPeninsulastations– UpdatedloggertothelatestOSandrewiredsothatthemodemisn’tconnectedtotheRS232port.

ØRaisedanycablesstoredbelowloggerbox

Instrumentsraised,SR50replaced

Mastraisedandnewsysteminstalled

Serviced

Condensationinloggerbox

BASAWSNetworkWorkCarriedout2017/18

Notvisited

Relocations

Limbert AWS

Ø Triedtoraisepreviousseasonbutwindprovedtoomuch.

Ø Wasinneedofaraise!

Ø Serviceovertwodays

BASAWSNetworkWorkCarriedout2017/18

OveratHalley….

ØHalleyV– Movedto5kmEastofCASLab

ØHalley6– MovedtoCASLab(sendingSYNOPStoGTS)

ØHalley6a– Remained

HalleyVsite

Halley6asite

CASLab

Chasm1

-22

-21

-20

-19

-18

-17

-16

-15

1950 1960 1970 1980 1990 2000 2010 2020

Halley

Halley1-3 Halley4 Halley5 Halley6

Linear(Halley1-3) Linear(Halley4) Linear(Halley5) Linear(Halley6)

-22

-21

-20

-19

-18

-17

-16

-15

1950 1960 1970 1980 1990 2000 2010 2020

Halley

Ø Takingdifferentsitesseparately–seeanindividualwarmingtrend

Ø Steppedcoolingbecausestationsaremovedfurtherinland

Ø Whenalldataisaddedtogetherfromallsites- gradualcoolingtrend

Ø Soaddingthedatatogetherfromvarioussitesmaygivefalsecooling….

HalleyTemperatureRecord

iWS14iWS18

Non-BASAWSNetworkWorkCarriedout2017/18

UniversityofUtrecht- IMAU

Ø iWS 14(Larsen)– swappediWS unitØ iWS 18(CabinetInlet)– swappediWS unit

+

+ ++

iWS 14

iWS 18

UniversityofUtrecht- IMAU

Ø iWS 14(Larsen)– swappediWS unitØ iWS 18(CabinetInlet)– swappediWS unit

Ø Thermocouplebroken– veryfragile– triallingifdifferentorientationworks(upinsteadofdown)

CurrentAWSStatus

Wind Temperature Pressure Humidity SnowDepthFossilBluffButlerIsland NotWorkingSkyBlu NotWorkingLimbert IntermittentHalleySites 6aBaldrickKoniSteffanAWS NotWorkingiWS14iWS18

AWS Sensors Power Iridium SBD

+

+ ++

Intentionsfor2018/19season

BASAWS

Ø FossilBluff– Investigateloggerbox moistureØ SkyBlu – InvestigateIridiumproblems,raise?Ø ButlerIsland– InvestigateIridiumproblems,raise?Ø HalleySites– Changebatteriesat6a?

UniversityofUtrecht- IMAU

Ø iWS14– SwapiWS unitØ iWS18– SwapiWS unit

SwapiWS units

Raise?

Service

Raise?

Changebatteriesat6a

Rothera Vaisala RadiosondeTrial

Ø Launching5balloonlaunchesaweek

Ø Aimforonetobeaduallaunch(tworadiosondes,onebigballoon)

Ø Runningforapproximatelyayearorwhenstocksrunout

Ø ChangetonewsystemandnewRS41sondes attheendofthetrial

RS41

RS92

Rothera Vaisala RadiosondeTrial

Ø Launching5balloonlaunchesaweek

Ø Aimforonetobeaduallaunch(tworadiosondes,onebigballoon)

Ø Runningforapproximatelyayearorwhenstocksrunout

Ø ChangetonewsystemandnewRS41sondes attheendofthetrial

RotheraDualBalloon

LaunchTrials

Thankyou

PhotoCredit:ScottWebster