FRM4STS: Fiducial Reference measurements for validation of Surface Temperature from Satellites (ceos cv8) Nigel Fox NPL (ESA Project) WGCV Plenary #

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Presentation transcript:

FRM4STS: Fiducial Reference measurements for validation of Surface Temperature from Satellites (ceos cv8) Nigel Fox NPL (ESA Project) WGCV Plenary # 40

ESA sponsored project (FRM4STS) to: Design and implement a laboratory-based comparison of the results of participants calibration processes for FRM TIR radiometers (SST, LST, IST) Design and implement a laboratory-based comparison to verify TIR blackbody sources used to maintain calibration of FRM TIR radiometers. Conduct external comparison ‘experiments’ of LST and WST to evaluate environmental effects e.g. sky radiance Design and implement field inter-comparisons of SST using pairs of FRM TIR radiometers on board ships to build a database of knowledge over a several yrs Conduct field-campaigns for FRM TIR of LST and IST to assess environmental effects in real world sites. Develop a set of best practise protocols for the calibration, operation and performance of FRM of Surface temperatures. Carry out comparisons and analysis to SI standards with full metrological rigour (e.g. detailed uncertainty breakdown). Perform a study of means to establish traceability and potential benefits to satellites validation and CDRs of high accuracy Ocean temperature measurements using buoys and similar floating systems. m

SI traceability: LCE (June 2016) Necessary for all participants to assess biases to SI under Laboratory conditions ITS-90 T= ~250 – 325 K Non-vacuum NPL BB PTB BB NPL Rad (AMBER) PTB Rad Rad 1 Rad 2 Rad 3 Rad 4 Rad n BB1 BB 2 BB 3 BB 4 BB n Room Environment with variable T

BB comparison (June 2016) Miami University - USA ONERA - France University of Valencia- Spain University of Southampton - UK Qing Dao -China RAL - UK CSIRO - Australia 8. KIT- Germany 273 K to 323 K (0 to 50 C)

Radiometer comparison Miami University (USA) ONERA (France) University of Valencia (Spain) University of Southampton (UK) Qing Dao (China) -1 Qing Dao (China) -2 RAL (UK) CSIRO (Australia) KIT (Germany) DMI (Denmark) GOTA (Canary Islands JPL NASA (USA) Ian Barton (Australia) MAERI (UofM) viewing NPL ammonia Heat pipe 240 K to 318 K SISTER (RAL) viewing NPL ammonia Heat pipe

Water Surface Temp (near NPL) (Jun/Jul 2016)

WST comparison University of Valencia (Spain) University of Southampton (UK) Qing Dao (China) -1 Qing Dao (China) -2 RAL (UK) CSIRO (Australia) KIT (Germany) DMI (Denmark) GOTA (Canary Islands) JPL NASA (USA)

LST measurements @ NPL (impact of environment e. g LST measurements @ NPL (impact of environment e.g. sky in context of ε) July 2016

LST (Sun & Cloud) Emissivity University of Valencia (Spain) KIT (Germany) JPL NASA (USA) ONERA (France) Emissivity

LST @ Namibia Jun 2017

Summary / Actions / Next steps Results from participants end of August Analysis by NPL Discuss with participants (individually about Uc) and as a group on results after confirmed Uc) Publish International Conf/workshop @ NPL, UK 7-9 March 2017