Julie FletcherManager Marine Observations, NZChair, VOS Panel

PMO-III, 23-24 March 2006,

Hamburg, Germany.

Monitoring Procedures

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PMO-III, 23-24 March 2006, Hamburg.

Outline

UKMO Quality Monitoring Tools for VOS

Onboard QM TurboWin Tool

The Value of Feedback

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PMO-III, 23-24 March 2006, Hamburg.

Delayed-mode UK Met Office VOS monitoring tools:

Monthly Monitoring Statistics

Monthly Timeliness of Receipt (TOR)

Coming….. Monthly time series plots

UKMO Monitoring Tools

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PMO-III, 23-24 March 2006, Hamburg.

Monthly Monitoring Stats

Available from Exeter at start of each month Compares SHIP data with UK model Bias & SD Statistics prepared for a range of variables:

• Air pressure• Air Temperature• Wind Speed• Wind Direction• Relative Humidity• Sea Surface Temperature

Example: NZ VOS Stats for February 2006

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PMO-III, 23-24 March 2006, Hamburg.

UKMO Monitoring Tools

http://www.metoffice.com/research/nwp/observations/monitoring/marine/index.html

Monthly Stats for individual National VOS are available on request from Gareth Dow

Since Jan 2006, the Monthly Stats for all VOS listed in Pub 47 have been published on the web by the UKMO• normally available in 2nd week of each month• useful extra - stats include list of ships for which Nil Obs recv’d

Monthly VOS TOR also available on web

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PMO-III, 23-24 March 2006, Hamburg.

Gareth advises that UKMO plan to have monthly Obs minus baseline(O-B) timeseries plots for each ship listed in Pub 47 available on line

planned start date June 2006

Future UKMO Monitoring Tool

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PMO-III, 23-24 March 2006, Hamburg.

Onboard QM TurboWin Tool

From TurboWin Ver3.6 there is the ability for the PMO to view the Obs on screen in traditional logbook coded format whilst on board the ship

IMMT data not easily readable, but new option allows PMO to view the Obs for monitoring purposes

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PMO-III, 23-24 March 2006, Hamburg.M

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Log

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PMO-III, 23-24 March 2006, Hamburg.

group-00 = SHIP_report_identifiergroup-0 = call_sign_or_identification_numbergroup-1 = day_of_month(YY)[UTC]-UTC(GG)-wind_speed_indicator(iw)group-2 = position_indicator(99)-latitude(LaLaLa)[degrees_and_tenths]group-3 = Quadrant(Qc)-longitude(LoLoLoLo)[degrees_and_tenths]group-4 = indicator_precipitation_group(ir)-indicator_weather_group(ix)-height_of_lowest_cloud(h)-visibility(VV)group-5 = total_cloud_amount(N)-wind_direction_true(dd)[tens_of_degrees]-wind_speed(ff)[units_see_iw]group-6 = group_indicator(1)-sign_of_temp(sn)[code]-air_temp(TTT)[degrees_and_tenths]group-7 = group_indicator(2)-sign_of_temp(sn)[code]-dew_point(TdTdTd)[degrees_and_tenths]group-9 = group_indicator(4)-corrected_pressure(PPPP)[omitting_thousands]group-10 = group_indicator(5)-characteristic_pressure_change(a)-amount_pressure_change(ppp)group-12 = group_indicator(7)-present_weather(ww)-past_weather(W1)-past_weather(W2)group-13 = group_indicator(8)-amount_low_clouds_or_medium_if_no_low(Nh)-type_low(Cl)-type_medium(Cm)-type_high(Cm)group-15 = selection_indicator(222)-course_made_good(Ds)-average_speed(vs)group-16 = group_indicator(0)-sign_and_type_sea_temp(ss)-sea_temp(TwTwTw)[degrees_and_tenths]group-18 = group_indicator(2)-period_wind_waves(PwPw)[seconds]-height_wind_waves(HwHw)[half_metres]group-19 = group_indicator(3)-1st_swell_waves_dir_from(dw1dw1)[tens_of_degrees]-2nd_swell_waves_dir_from(dw2dw2)[tens_of_degrees]group-20 = group_indicator(4)-1st_swell_waves_period(Pw1Pw1)[seconds]-1st_swell_waves_height(Hw1Hw1)[half_metres]group-21 = group_indicator(5)-2nd_swell_waves_period(Pw2Pw2)[seconds]-2nd_swell_waves_height(Hw2Hw2)[half_metres]group-22 = group_indicator(6)-type_ice_accretion(Is)-tickness_ice(EsEs)[cm]-rate_ice_accretion(Rs)group-23 = group_indicator(8)-sign_and_type_wet_bulb_temp(sw)-wet_bulb_temp(TbTbTb)[degrees_and_tenths]group-24 = concentration_or_arrangement_ice(ci)-stage_development_ice(Si)-ice_land_origin(bi)-bearing_ice_edge(Di)-ice_situation(zi)-group-00 group-0 - - group-1 group-2 group-3 group-4 group-5 group-6 group-7 group-9 group-10 group-12 group-13 group-15 group-16 group-189 …….BBXX callsign Year Month YYGGiw 99LaLaLa QcLoLoLoLo irixhVV Nddff 1snTTT 2snTdTdTd 4PPPP 5appp 7wwW1W2 8NhClCmCh 222Dsvs 0ssTwTwTw 2PwPwHwHw …….BBXX SMMO 2005 06 07104 99493 70043 41699 52131 10136 21053 40155 52022 70222 85200 22213 00184 20403 3//// 4//// 5//// 6//// 80066 ICE /////

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PMO-III, 23-24 March 2006, Hamburg.

QM Feedback to Ships

Vital that NMS provide feedback on Obs quality and quantity to National VOS

Real-time feedback via PMO visit, email, or phone call is most effective as targets current observers

Feedback on problems should be done in a manner to encourage and assist observers

Most ships view feedback whether good or bad as positive as it demonstrates their Obs are being used

Always include some thanks and encouragement in feedback messages

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PMO-III, 23-24 March 2006, Hamburg.

Use of the Monitoring Tools and timely feedback to ships to correct problems will improve the quality

and quantity of Obs provided by VOS