Title of Presentation

Ronny Petrik, Beate Geyer, Burkhardt Rockel

THE FINO DATABASE AND ITS APPLICABILITYFOR MODEL EVALUATION

Helmholtz-Zentrum Geesthacht

Title of Presentation2

MOTIVATIONWhy to deal with tower data? – Example Falkenberg

Daily cycle of different stratifications

@Petrik, 2019 (2nd review)

Title of Presentation3

MOTIVATIONWhy to deal with tower data? – Falkenberg example

Strong stability under ‘rainy’ conditions

Daily cycle of different stratifications

@Petrik, 2019 (2nd review)

Title of Presentation4

FINO PLATFORMS

• importance of FINO data: one of few vertical resolved measurements over water

• lead by three different everchangingproviders

• standarization treated by elaborated FINO project (already finished)

@ https://www.fino-offshore.de/en/

FINO 1 characteristics heights

WSS (cup, 2 booms) 33, 40, 50, 60, 70, 80, 90, 101, 105

WDIR (vane) 33, 50, 70, 90

RELHUM (Thies 1.1005.50.512) 34, 41, 51, 71, 91

T (Thies 1.1005.50.512) 34, 41, 51, 71, 91

FINO 2 characteristics heights

WSS (cup, 1 boom) 32, 42, 52, 62, 72, 82, 92, 103

WDIR (vane) 33, 50, 70, 90

RELHUM (Thies, two types) 30, 50, 99

T (Thies 1.1005.50.512) 30, 40, 50, 70, 99

Title of Presentation5

FINO DATA QUALITYConsistency in instrumentation and measurement

• HZG initiated to discuss about FINO database and observations in 2017: sporadic conversations lead to telephone conference at April 2019 (regarding FINO1)

Hurricanes in North Sea(920 hPa)

• problems are about near-surface fields as well as profiles and corrections

Title of Presentation6

RELIABILITY OF TEMPERATURE PROFILESStorm Christian, 27.10.2013 – 30.10.2013

Title of Presentation7

RELIABILITY OF TEMPERATURE PROFILESStorm Christian, 27.10.2006 – 30.10.2013

T-Profiles not completely realiable (instrumentation issue)

Title of Presentation8

RELIABILITY OF WIND PROFILESLattice correction and consistency to USA

Wind speed CUP [m/s]

Win

d s

pee

dC

UP

un

corr

ecte

d[m

/s]

CUP vs CUPuncorrected, 60m CUP vs USA, 60m

Title of Presentation9

RELIABILITY OF WIND PROFILESLattice correction and consistency to USA

Wind speed CUP [m/s]

Win

d s

pee

dC

UP

un

corr

ecte

d[m

/s]

CUP vs CUPuncorrected, 60m CUP vs USA, 60m

FORGET about USA measurements

Title of Presentation10

RELIABILITY OF WIND PROFILES IIDependency of lattice correction

date

CUP vs. CUPuncorrected, 60m CUP vs. CUPuncorrected, 80m

𝜕𝑊𝑆𝑆/𝜕𝑡

Title of Presentation11

CONCLUSIONS ABOUT QUALITYFINO1 data, for FINO2 and FINO3 new workshops are needed

Model evaluation following the aforementioned issues

• Various sensors with long non-operation periods• Temperature:

elaborated calibration only at 2016, until 2015 only absolute measurements at 33 and 100m and all the

others utilized a difference method (corrupted by power leaks) From end of 2015 single calibrated absolute measurements

• Wind speed: ongoing operational calibration, no lattice correction from 30 m/s and above

• Precipitation: do not use it (fast saturation state)• All: long cables lead to signal interruptions zero values recorded by

the devices

Title of Presentation12

EVALUATION SETUP

• Temporal overlap between all flux towers + prevent modifications of surroundings (2010 - )

• 3D-model data are needed simulation from openFRED project: MERRA2 forcing Spectral nudging 7 km horizontal resolution

• In future hopefully I am a MESSY

Title of Presentation13

DAILY CYCLE OVER NORTH SEAFINO1 in comparison to Falkenberg at summer

FINO1 (2010-2011)Falkenberg

Title of Presentation14

DAILY CYCLE OVER NORTH SEAFINO1 in comparison to Falkenberg at summer

FINO1 (2014-2015)Falkenberg

Temporally varying quality

Title of Presentation15

ORIGIN OF MODEL ERRORS AT FINO1Top level at 102 meter

Title of Presentation16

DAILY CYCLE OVER BALTIC SEAFINO2 in comparison to Falkenberg at summer

FINO2Falkenberg

Title of Presentation17

DAILY CYCLE OVER NORTH SEAFINO3 in comparison to Falkenberg at summer

FINO3 (2010 – 2011)Falkenberg

The modeler does not believe everything

Title of Presentation18

DAILY CYCLE OVER NORTH SEAFINO3 in comparison to Falkenberg at summer

FINO3 (2014-2015)Falkenberg

Title of Presentation19

Title of Presentation20

CONCLUSIONS

• Starting from 2014, the wind profiles become physically more plausible but further investigation is needed

• the well known daily cycle at summer over land not seen over ocean• low-level jet development at first half of night (Baltic) and second half

of night (North Sea)• Overestimation of ‘upper level’ winds at FINO1 but underestimation of

LLJ at FINO2

DATA flux towers• Recent state of FINO data prepared by HZG in NETCDF format• Further data of offshore flux towers exist at HZG in NETCDF format

Title of Presentation21

THANK YOU FOR YOUR ATTENTIONPassing of Storm Christian, 27.-30.10.2013

Title of Presentation22

FINO2 – BALTIC SEASummer 2014 and 2015

Title of Presentation23

OCCURRENCE OF DIFFERENT GROßWETTERLAGEN