3) From the ridiculous to the ridiculously good: here’s all 13 USA goals against Thailand as the defending champions set a Women’s World Cup record. They’d held the previous one too, from way back in 1991 when they beat Chinese Taipei 7-0 in the very first tournament. You can watch that whole match here.4) The US Open gets under way on Thursday, with Brooks Koepka seeking to become the first man to win it three times in succession since Willie Stewart 114 years ago, though he’d still need another to match the record four titles held by four players, including Jack Nicklaus, whose wins spanned 18 years, from 1962 to his fourth in 1980. Koepka also jointly holds the course record to par (16 under), set in his 2017 triumph. He shares that record with Rory McIlroy, whose 268 in 2011 is the tournament’s best overall score. And if last week’s Canadian Open is anything to go by, Rory’s playing his way back into form.5) Would you trust this man to run the country? Boris Johnson v a child during his London mayoral days (the “Can’t Spake!” remix) Cricket Read more Pinterest Share on LinkedIn YouTube archive 1) Sunil Gavaskar: a career in flip books.2) A rugby league refereeing masterclass as Wigan v Warrington goes to Milwaukee and gets feisty in 1989.3) A world records montage: Phelps, Bolt, Lewandowski and more.4) Boxing scalps from the vaults: Danny Williams floors Mike Tyson in 2004.Spotters badges: GrahamClayton, LeeWall, whobroughtoranges, Perwinkle.Guardian YouTube football channelDo subscribe if you fancy.Guardian YouTube sport channelDo subscribe if you fancy. Share on Facebook features Football Twitter Share on WhatsApp Share via Email Topics Share on Twitter US Open Since you’re here… Pinterest Twitter 1) There’s no doubt what the most watched Cricket World Cup match will be this weekend (if the rain holds off): India v Pakistan excites passions like few other sporting contests, and it will offer Virat Kohli’s side a chance to atone for their Champions Trophy final defeat in 2017. India have fonder memories of meeting Pakistan in recent World Cups, however, beating them four years ago in the group stage and in the 2011 semi-final. And then there was this Sachin Tendulkar masterclass in 2003.2) Great own goals dept: over in the MLS, the San José goalkeeper Daniel Vega pays the price for a lack of concentration against Dallas. The Recap: sign up for the best of the Guardian’s sport coverage Facebook … we have a small favour to ask. More people are reading and supporting The Guardian’s independent, investigative journalism than ever before. And unlike many new organisations, we have chosen an approach that allows us to keep our journalism accessible to all, regardless of where they live or what they can afford. But we need your ongoing support to keep working as we do.The Guardian will engage with the most critical issues of our time – from the escalating climate catastrophe to widespread inequality to the influence of big tech on our lives. At a time when factual information is a necessity, we believe that each of us, around the world, deserves access to accurate reporting with integrity at its heart.Our editorial independence means we set our own agenda and voice our own opinions. Guardian journalism is free from commercial and political bias and not influenced by billionaire owners or shareholders. This means we can give a voice to those less heard, explore where others turn away, and rigorously challenge those in power.We need your support to keep delivering quality journalism, to maintain our openness and to protect our precious independence. Every reader contribution, big or small, is so valuable. Support The Guardian from as little as $1 – and it only takes a minute. Thank you. Support The Guardian Share on Messenger 6) Not safe for work: Japan’s office chair racing competition is becoming an increasingly big deal.Our favourites from below the line last week Share on Pinterest Golf Facebook Reuse this content
The UV environment of the Beagle 2 landing site: detailed investigations and detection of atmospheric state
December 25th 2003 will see the Beagle 2 lander arrive at the surface of Mars in the Isidis region, allowing for the first time in situ measurements of ultraviolet (UV) flux directly from the surface of Mars through the use of a sensor designed as part of a miniaturised environmental package. The expected conditions the sensor will experience are studied here, and the detection signatures for phenomenon such as dust devils. H2O clouds ands near-surface fogs are presented. The beginning and end of mission surface fluxes show little variation, though the period towards mid-nominal mission does experience a maximum in total daily dose levels. Diurnal profiles are calculated highlighting the effects of increased scattering towards shorter wavelengths. A possible dust storm scenario is presented, and the effect upon component UV fluxes is shown to reverse the relative contributions of direct and diffuse components of the total UV flux. The presence of cloud formation above the landing site will be detectable though the observation of elevated diffuse/direct flux ratios. Near-surface morning fogs show a characteristic ‘dip’ in the morning profile when compared to clear mornings, allowing their detection on cloud-free mornings through post-event analysis of long term data. Predicted Phobos eclipses are investigated at each of the sensor centre wavelengths, and show greatest reduction in relative intensity at short wavelengths. Observations of near-miss eclipse events will also be possible, through monitoring of the diffuse UV flux. Dust devil encounters are shown to create a double minima lightcurve, with the depth of the minima dependent upon the total dust loading of the vortex. The effects of these changing conditions on DNA-weighted irradiances are investigated. Possible dust storms provide the greatest increase in biological protection, whereas expected cloud formations at the Beagle 2 site are found to offer negligible protection. Within just five minutes of landing > 95% of any Bacillus subtilis-like bacteria present on the surface of the craft will have lost viability.