Ro#erdam urban hydro-meteorological observatory

Marie-clairetenVeldhuisj.a.e.tenveldhuis@tudel5.nlHermanRusschenbergMarcSchleissNickvandeGiesenRobertBanksXinTianElenaCrisEanoAndreasKrietemeyer

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Hydro-Meteo-observatory Rotterdam Objec&ves:

•  Measuringsmall-scalerainfallvariability•  Short-termhighresoluEonrainfallforecasEng

(nowcasEng)•  NumericalweatherpredicEonandrainfallforecasEng•  Hydrologicalresponseanalysisandearly-warningPartners:TUDel5:DepsWatermanagement;Geosciences&RemoteSensing;MicroelectronicsRoTerdamCity:Watermanagement;ClimateResilienceProgram

Industrialpartners:SkyEcho,RHDHV

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Hydro-Meteo-observatory Rotterdam

EU-fundingsupportandinterna&onalcollabora&on:•  MUFFIN(MulE-scaleUrbanFloodForecastINg)•  FLoodCiESense(EarlywarningserviceforurbanpluvialfloodsforandbyciEzensandcityauthoriEes)

•  BRIGAID(BridgingtheGapforInnovaEonsinDisasterResilience)

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Hydro-meteorologicalobservaEonnetworkRoTerdamregion40km–30km–20km–10km–5kmrangefromradarposiEon(RoTerdamcitycentre)

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Hydro-meteorologicalobservaEonnetworkRoTerdamregion40km–30km–20km–10km–5kmrangefromradarposiEon(RoTerdamcitycentre)

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Hydro-meteorologicalobservaEonnetworkRoTerdamregion40km–30km–20km–10km–5kmrangefromradarposiEon(RoTerdamcitycentre)

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Hydro-meteorologicalobservaEonnetworkRoTerdamregion40km–30km–20km–10km–5kmrangefromradarposiEon(RoTerdamcitycentre)

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Hydro-meteorologicalobservaEonnetworkRoTerdamregion40km–30km–20km–10km–5kmrangefromradarposiEon(RoTerdamcitycentre)

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Available instrumentation -  PolarimetricXbandradar-  MRR:verEcalprofilingradar-  WeatherstaEons:8operaEonal(Campbell)+5addiEonaltobe

installed(Davis)-  GNSSreceiversforwatervapouresEmaEon:4singlefrequency,

14dualfrequency(fromNov.2017)-  50-60AmateurweatherstaEons(Netatmo,Wunderground)-  6Disdrometers(installedonpumpingstaEons,statusunder

invesEgaEon)-  20Waterlevelsensorsatoverflowweirs-  100+waterlevel/flowsensorsatpumpingstaEons

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Polarimetric X-band radar Somenumbers:-  AlEtuderadar:156m-  Blindzonenearradar

(minrange):200m-  1fullPPI/min

(6degreespersecond)-  constantelevaEonangle(1.4°)-  beamwidth2.5degrees-  FMCWradar:frequencyexcursions5-50MHz-  20mrangeresoluEon((range3-30mfor50-5MHz)-  maxrange:30km-  Dataformats:1minNetCDF

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Pixelsurfacearea:100m2

RadaralEtude=156m

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Polarimetric X-band radar Rainfalles&ma&on:-  viaspecificdifferenEalphase(KDP)-  viaradarreflecEvity(R)-  interpolated

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RadarPPIReflecEonHH18Aug2017,9.39-9.48h

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MRR: vertical profiling radar

ObjecEves:-  Preciselymeasure

hydrometeorsfromurbanrainfalleventswithhighver&calandspa&alresolu&on

-  learnmoreaboutthedropsizedistribuEon,liquidwatercontentandrainrateforhigh-impactevents

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Liqu

idW

aterCon

tent(g/m

3)

VerEcalrange(m

asl)

Ver&calprofileofLiquidWaterContent:Productoftotalvolumeofalldropletswithdensityofwater,dividedbythescaTeringvolume-  0-4000mverEcal

range-  Over60minEme

Rainra

te(m

m/h)

Rainrate:derivedfromliquidwatercontentandfallvelocity(Dopplerspectra)

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Network of weather stations

Campbell(HQ)Davis(MQ) Netatmo(LQ)

Disdrometers(?)

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Network of weather stations www.weather.tudel5.nl

Rainfall:retrievalofEppingEmesDatacommunica&on:LoRa(LongRange,wirelessdatacommunicaEon)

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Network of personal weather stations

#Insert1or2quicklooksfromMRRBriefdescripEonofparametersmeasuredObjecEveofinstrument?

Ongoingwork2017-2018:DevelopmentofdataqualityalgorithmforPWSrainfalldataIncollaboraEonwith:•  KNMI•  WageningenUniversity

Weatheramateurnetworks:personalweatherstaEondata(PWS)

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Hydrological response analysis

-  WaterlevelsensorsatCSOs:21locaEons,in13sewerdistricts

-  FloodobservaEonsbyciEzens(callcentredata)

-  Impactofgreen-bluesoluEons:greenroofs,permeablepavements,bio-retenEon/raingardens

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Waterlevelsatcso-weirs-ResponseEmeanalysis,preliminaryconclusions:-  RTvariesbetween<1to>4h(25-75%

range)-  NosignificantcorrelaEonswitharea

size,imp.degree

Figures:ResponseEmeanalysis;waterlevel(blue),rainfall(red)(ExampleforDistrict5,3events)

Courtesy:Mar-jnMulder,MScstudentTUDel8

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Crowdsourcing: citizens’ flood observations

ObjecEve:toidenEfycriEcalthresholdsforearlywarning

Courtesy:Chris-anBouwens,MScstudentTUDel8Densityoffloodreports,2010-2016

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Hydrological response analysis : Overflow pumping

ObjecEve:toidenEfycriEcalthresholdsforearlywarning

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RaingaugeWaterlevel

sensor

PumpingstaEon

Studyarea:1.32km2

Impact of green-blue solutions

3-monthstudyperiod:10Oct-10Dec2016,mildrainfallevents(noCSOoverflows)

Courtesy:JackHill,visi-ngstudentUnivofMelbourne

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Impact of green-blue solutions

3-monthstudyperiod:10Oct-10Dec2016

%TotalimplementaEon:areaimplemented/totalarea

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Impact of green-blue solutions

%TotalimplementaEon:areaimplemented/totalarea

Flowvariability(expressedasSTD)

%PeakrunoffreducEon:Q_99%-ile(x%impl)/Q_99%-ile(0%impl)

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Impact of green-blue solutions

Somepreliminaryconclusions:-  greenroofsandpermeablepavementsmore

effecEvethanbioretenEon(largerstoragecapacity)

-  locaEonofimplementaEonisimportant:largerimpactclosetosystemoutletthanfarfromsystemoutlet

1-2-3June2018

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Hydro-Meteo-observatory Rotterdam

Futurework•  Analysingsmall-scalerainfallvariability,space-Eme

characterisEcs•  ObtainhighaccuracyrainfallesEmates•  Developearly-warningtooltosupporturbanflood

response(low-costrainfallsensors,ciEzenscienceproject)•  Hydrologicalresponseanalysis:predictorsforpeakflow

variability,runoffraEos,impactofimperviousnessandgreenbluesoluEons

•  Short-termhighresoluEonrainfallforecasEng(nowcasEng)•  NumericalweatherpredicEon:WRFforurbanenvironment

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MercidevotreaJen&on

Thankyou!

Marie-clairetenVeldhuisj.a.e.tenveldhuis@tudel5.nl

HermanRusschenberg,MarcSchleiss,NickvandeGiesen,RobertBanks,XinTian,ElenaCrisEano,AndreasKrietemeyer

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Backupslides

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NaEonalWeatherRadar PolarimetricX-bandradar1x1km2,5-15min 100x100km2,1min

Courtesy:KNMI Courtesy:H.W.J.Russchenberg

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