Madrid: Barcelona are closing in on their eighth La Liga title in 11 years after Clement Lenglet and Jordi Alba both scored in a 2-1 win over Real Sociedad on Saturday. Victory means Barca only have to beat Alaves on Tuesday and then Levante next Saturday to be crowned champions at Camp Nou, while three points against Alaves will be enough on its own if Atletico Madrid then lose to Valencia on Wednesday. Whether in three days or seven, it is now surely only a matter of when rather than if Ernesto Valverde’s side successfully defend their trophy, despite Atletico keeping the gap to nine points after they edged past Eibar earlier on Saturday. Also Read – Puducherry on top after 8-wkt win over Chandigarh”We have to get it out of our heads that we are nine points clear,” Valverde said. “We now have three days until we play again and it will be difficult.” Wrapping it up early though would allow Barcelona the luxury of focusing completely on the Champions League, which could give them an advantage over their semi-final opponents Liverpool, who seem to be embroiled in a Premier League race to the finish with Manchester City. But this was no stroll, with Real Sociedad pulling level in the second half thanks to Juanmi’s equaliser, even if parity lasted less than two minutes. Lionel Messi might not have scored but it was his cute pass that teed up the excellent Alba to score the winner after Lenglet had earlier powered in a header from Ousmane Dembele’s cross.
An intercomparison of zenith-sky UV-visible spectrometers was held at Camborne, UK, for 2 weeks in September 1994. Eleven instruments participated, from nine different European institutes which were involved with the Second European Stratospheric Arctic and Mid-latitude Experiment (SESAME) campaign. Four instruments were of the Systeme d’Analyse d’Observations Zénithales (SAOZ) type, while the rest were particular to the institutes involved. The results showed that the SAOZ instruments were consistent to within 3% (10 DU) for ozone and 5% for NO2. For ozone the results from these instruments agreed well with total ozone measurements by Dobson and Brewer spectrophotometers and integrated ozonesondes when the air mass factors for the SAOZ were calculated using the ozonesonde profiles. Differences of up to 10% in ozone and 30% in NO2 were found between different instruments. In some cases these differences are attributable to the different absorption cross sections used in the analysis of the spectra, but other discrepancies remain to be investigated. A prominent source of error identified in the campaign was uncertainty in the derivation of the amount of absorber in the reference spectrum, which can contribute an error of up to 3% (10 DU) in ozone and 1.5×1014 molecules cm−2 in NO2.