AOPC/OOPC Surface Pressure Working Group Report

3y ago
37 Views
2 Downloads
844.42 KB
10 Pages
Last View : 1m ago
Last Download : 2m ago
Upload by : Wren Viola
Transcription

AOPC/OOPC Surface Pressure WorkingGroup ReportDavid ParkerHadley Centre, Met Office, UKFor Rob Allan (Hadley Centre, Met Office) and Gil Compo (ClimateDiagnostics Center, Univ. Colorado / NOAA) Crown copyrightAOPC XI, Geneva, Switzerland, 11th-15th April 2005Page 1

The presentation covers:Progress on the 2004/5 Work PlanExamples of Group activities & publications2005/6 Work Plan Crown copyrightPage 2

Progress on the 2004/5 Work Plan Creation of AOPC surface pressure working group web sitehttp://www.cdc.noaa.gov/Pressure/ to promote Group activities. Theweb site has been completed, evaluated by the Working Group, and puton line: many thanks to Gil Compo and support people at ClimateDiagnostics Center (Univ. Colorado and NOAA) Formulation of format for data archive . Still to be decided on as part ofthe development of the International Pressure Data Bank. Overcomplexity undesirable. Examination of the U.K’s "Superfile" daily pressure gridded product tocheck its veracity. Tara Ansell has begun this task in relation to thecreation of the daily historical EMSLP3 data set for the EuropeanAtlantic sector 1850-2003 within the EC-funded EMULATE project. Fully describe ongoing issues, including duplicate marineobservations, the low pressure bias in the Maury data, and grid-boxuncertainties. These issues have been examined by Tara Ansell as partof the EMSLP3 and HadSLP2 data set construction (see later slide).Papers detailing EMSLP3 and HadSLP2 from 1850-2003 are in progress. Crown copyrightPage 3

Progress on the 2004/5 Work Plan (continued) Development of real-time capability for HadSLP data set This has beencompleted by Tara Ansell as an interim product, HadSLPr, usingadjusted NCEP/NCAR reanalysis data from 2004. A more detailedapproach to developing the real-time capacity without NCEP/NCARreanalysis data may be developed. Expansion to include collation and analyses of wind data This is anongoing issue which will be discussed at the next Working GroupMeeting. Current proposal is to approach Dr Shawn Smith, COAPS,Florida State University to join the Group as a marine wind expert. Development of efforts to undertake 100 year reanalysis using onlysurface data Gil Compo has some support from NOAA to initiate this:http://www.joss.ucar.edu/joss psg/meetings/climatesystem/WG Report.pdf. Work is underway to retrieve the data necessary to undertake thisproject. 3rd AOPC/OOPC Surface Pressure Working Group Meeting Will takeplace at the Met Office, Exeter, UK on Friday 21st October 2005. Detailscan be found at the following oming.html Crown copyrightPage 4

Examples of Group activities & Publications Crown copyrightPage 5

New MSLP gridded productsHadSLP2 : Global, monthly product (update ofHadSLP1) Blend of 1502 stations marine obsfrom 1850-2003 5x5 degree resolution will be updated in near real time &available from www.hadobs.org HadSLP3 will be created by the endof 2005EMSLP3: North Atlantic – Europe daily product Blend of 86 stations marine obsfrom 1850-2003 5x5 degree resolution available Nov, 2005 from :www.cru.uea.ac.uk/emulate Crown copyrightPage 6

Comparison of the North Atlantic Oscillation (NAO) Indexfrom station, EMSLP3 and HadSLP2 dataThe winter (December to February) North Atlantic Oscillation from 1850-2003 fromEMSLP (red), and HadSLP2 (blue) gridded products. The winter NAO is calculatedby taking the difference between the grid point closest to Ponta Delgada (Azores)and that closest to Reykjavik (Iceland). The 1961-1990 mean series value is thenremoved from each value. Also plotted is a station based index (green), using datafrom Reykjavik and Ponta Delgada (denoted here ‘station’); units are in hPa Crown copyrightPage 7

HadSLPr and NCEP/NCAR evaluations in realtime developmentAnnual averaged MSLP anomalies, 18502004, for HadSLP2r (red) and forNCEP/NCAR 1948-2004 (blue) for a)Arctic, b) Europe and Northern Africa andc) Southern Ocean and Antarctic. TheNCEP/NCAR anomalies are based onunadjusted data, but are relative to theNCEP/NCAR 1961-90 climatology, so areunbiased relative to the HadSLP2ranomalies. Each series has beensmoothed with a 21-term binomial filterand over-plotted to show decadal andlonger-term variations. Crown copyrightPage 8

Relevant Publications 2004-2005Allan, R. J. and Ansell, T. J., 2005: A new globally complete monthlyhistorical gridded mean sea level pressure data set (HadSLP2): 1850-2003.J. Climate (In preparation).Ansell, T. J. et al., 2005: Daily mean sea level pressure reconstructions forthe European North Atlantic region for the period 1850-2003. J. Climate (Inpreparation).Bronnimann, S., Compo, G.P., Sardeshmukh, P.D., Jenne, R. and Sterin,A., 2005: New approach for extending the Twentieth Century climate record.Eos, 86,1,2-6.Kanamitsu, M. and Hwang, S.-O., 2005: The role of sea surfacetemperature in reanalysis. Mon. Wea. Rev. (Submitted).Whitaker, J.S., Compo, G.P., Wei, X. and Hamill, T.M., 2004: Reanalysiswithout radiosondes using ensemble data assimilation. Mon. Wea. Rev.,132, 1190-1200. Crown copyrightPage 9

2005 Work Plan Co-opt Tara Ansell & Shawn Smith into the Core Membershipof the Working Group Continue development of Working Group WWW site Complete HadSLP3 data set Establish International Pressure Data Bank (holding bothpressure station time series & gridded products on sub-daily,daily & monthly timescales) in the most appropriate dataformat Obtain sub-daily to daily pressure data for both 100 yearreanalysis & development of historical Northern Hemispheregridded data set building on EMSLP3, ICOADS, & ISHcompilations Possible analysis of storminess using rapid sub-dailypressure changes Conduct the 3rd AOPC/OOPC Surface Pressure WorkingGroup Meeting, Met Office, Exeter, UK - 21st October 2005 Crown copyrightPage 10

David Parker Hadley Centre, Met Office, UK For Rob Allan (Hadley Centre, Met Office) and Gil Compo (Climate Diagnostics Center, Univ. Colorado / NOAA) AOPC XI, Geneva, Switzerland, 11th-15th April 2005

Related Documents:

David Parker will investigate the Gordon Manley pressure records. Since the meeting David has been able to find evidence that Gordon Manley did indeed collate pressure observations and there appears to be coverage for London from 1770. We have the potential to take the London and Paris records back to the 17th Century, possibly earlier.

Bosch Rexroth AG, RE 92650/06.2016 6 A1VO Series 10 Axial piston variable pump Working pressure range Working pressure range Pressure at service line port B Definition Nominal pressure p nom 250 bar The nominal pressure corresponds to the maximum design pressure. Maximum pressure p max 280 bar The maximum pressure corresponds the maximum working pressure within the

Earth Pressure (P) 8 Earth pressure is the pressure exerted by the retaining material on the retaining wall. This pressure tends to deflect the wall outward. Types of earth pressure: Active earth pressure or earth pressure (Pa) and Passive earth pressure (P p). Active earth pressure tends to deflect the wall away from the backfill.File Size: 1MBPage Count: 55

Acceptance Factor is calculated using the pressure tank precharge pressure (2 psig below the pump cut-in pressure). The pressure tank will oper ate between the pressures set by the pressure switch. The tank precharge pressure should be set at 2 psig below the low pressure cut -in to prevent a noticeable drop in pressure at the fixture.

Supply port for pressure to be regulated VOLUME CONTROLLER For fine adjustment of pressure OUTPUT PORTS For regulated pressure output . PCS-01 Pressure Controlling System. PGS-01 Pressure Generating System 0-2000 PSI PRESSURE REGULATOR For pressure control to target pressure FILL PORT Input port for filling internal single cylinder INTERNAL .

Pressure support Pressure control ventilation Pressure-controlled inverse-ratio ventilation Airway pressure release ventilation Volume-assured pressure modes (1-5 below) 1. Pressure augmentation (Bear 1000) 2. Volume Support (Siemens) 3. Pressure Regulated Control (Siemens) Main Parameters Pressure support level, sensitivity, FIO 2, and PEEP

Surface Pro 4 also has an infrared (IR) face-detection camera so you can sign in to Windows without typing a password. For more info, see Windows Hello on Surface.com. For more camera info, see Take photos and videos with Surface and Using autofocus on Surface 3, Surface Pro 4, and Surface Book on Surface.com. Microphones

“Am I My Brother’s Keeper?” Cain & Abel by Tintoretto. Everything can be taken from a man but the last of the human freedoms - to choose one’s attitude in an given set of circumstances, to choose one’s own way.--Auschwitz Survivor, Victor E. Frankl Human Gene Map. OnegShabbat Archives –Emanuel Ringleblum Remembrance: To record and to teach future Generations. The time has come to .