Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

CIMO8th International Radiosonde Intercomparison

at Yangjiang, ChinaJuly 2010

GRUAN ContributionHolger Vömel

Franz Immler

June Wang

Masatomo Fujiwara

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Yangjiang site

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Location

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Operational sondes launch at Yangjiang

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

SSI launch

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Operational Radiosondes

Thin film Capacitor(E+E)Chip thermistorGPS LMS6Lockheed Martin Sippican INC

Thin film Capacitor(E+E)Bead thermistorGTS(U)1-1China HUAYUN

Thin film Capacitor (E+E)Bead resistanceCF-06-ABeijing Chang Feng

Thin film capacitor, heated twin sensorCapacitive wireRS92-SGPVaisala Oyj

Capacitance polymerThermistorRS-06GMEISEI Co. LTD

Thin film Capacitor(E+E)NTC ThermistorRSG-20AJIN YANG

HS02 China HumicapCylindrical thermistorGTS1-2 digitalNanjing Da Qiao Machine Co Ltd

Hygroclip Rotronic / Snow White hygrometerThermocoupleSRS-C34Meteolabor

Thin film Capacitor(E+E)ThermistorDFM-09GRAW Radiosondes

Capacitive polymerBead thermistorM2K2DCMODEM

Thin film Capacitor(E+E)Bead thermistoriMet2Intermet

Humidity sensorTemp. sensorRadiosondeCompany

Scientific Soundings Instruments

Opportunity sondeThin film (E+E)

Thermistor DFM-09 Graw GmbH

Thin film (E+E)

Multi chip thermistors

LMS-6L. M. Sippican INC

Multithermistor

-Tungsten wireMeisei RS-06G

MEISEI Co. LTD

MTR

Not in comparisonsThin film Drycap

-Vaisala RS92Vaisala OyjRD100

PTU from RS92Frost-point hygrometer

-Intermet Imet1

EnSci Corp. CFH

Comments Humidity sensor

TemperatureSensor

RadiosondeCompany SSI Sensor

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Campaign period

Campaign period July 12-Aug 3

72 Launches in total:

60 launches of operational radiosondes 4 x daily in 2 groups

Each manufacturer approx 15x day, 15x night

12 launches of SSI payloads 6x night, 6x day

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Scientific Soundings Instruments

RR01&MTR tied to bamboo rigyyy14:53:007/30/1066 (12)

RR01&MTR tied to bamboo rigyyy14:48:347/29/1061 (11)

RR01&MTR tied to bamboo rigyyy15:05:317/28/1056 (10)

RR01 tied to bamboo rig; No MTR (shortage of sondes); CFH suspended on side

nyy02:55:477/27/1053 (9)

RR01 tied to bamboo rig, yny02:49:517/26/1048 (8)

RR01&MTR tied to bamboo rig yny03:01:247/25/1043 (7)

MTR broke at launch; no Multithermistor datayyy14:45:027/21/1032 (6)

nny12:51:237/20/1026 (5)

nny03:06:257/18/1020 (4)

No MTR/Meisei GPS/P data nyn02:56:497/17/1015 (3)

nyy02:59:287/16/1010 (2)

nny12:58:007/14/1002 (1)

Comments GrawUn-

winderPara-chute

Time(LST)

DateFlight #

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Remote sensing

?Microwave Radiometer

VaisalaCL51 Ceilometer

?Mobile Boundary Layer Wind Profiler Radar

?Millimetre-wave Cloud-detection Radar

?All-sky imager

CMAS band Doppler Weather Radar

CMAGPS/MET water vapour network

Provided byEquipment

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Report

Report about this campaign is currently in preparation

1st writing workshop in Geneva 15-18 February 2011

Details on the comparison are confidential until manufacturers comments are included

Manufacturers meeting at Payerne 29-31 March 2011

Final release of report May/June 2011

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Balloon performance

Burst Height (m) & Pressure

0

5000

10000

15000

20000

25000

30000

35000

40000

45000

1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71

Flight Number

H

e

i

g

h

t

(

m

)

0. 0

20. 0

40. 0

60. 0

80. 0

100. 0

120. 0

140. 0

160. 0

180. 0

200. 0

P

r

e

s

s

u

r

e

Bur st Hei ght Bur st Pr essur e

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Temperature night

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Temperature night

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Temperature day

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Temperature day

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Temperature comparison Multithermistor vs Vaisala

red: daytimeblue: nighttime

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Temperature comparison Meisei MTR vs Vaisala

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Water vapor

RD100 first tropical test

Understanding that this is a test of an instrument in development and that failure may happen

Fear of contamination in liquid clouds

Use of rainshield, which was supposed to open in mid troposphere

Rainshield mechanism failed�sensor could not equilibrate to outside conditions �no useful measurements using RD100

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Water vapor nighttime operational sensors on SSI payload

Temperature (°C) RH (%)

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Water vapor daytime operational sensors on SSI payload

Temperature (°C) RH (%)

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

CFH profile

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

CFH data availability as function of altitudeall soundings

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Water vapor all launch timesoperational sensors on SSI payload vs CFH

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

CFH uncertainty estimates

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)

Water vapor all launch timesoperational sensors on SSI payload vs CFH

ConsistencyTest usingCFH uncertaintyestimates

22

21

21

uu

mmk

+

−=

Meteorological Observatory Lindenberg – Richard Assmann Observatory (2010)