Cuts to Scotland's planet-warming greenhouse gases are still "too slow" despite a fall in emissions, environmental groups say.
They say progress has "stalled" after figures showed a 1.9% year-on-year drop in emissions such as carbon dioxide for 2023.
A bounce back in international air travel after the pandemic has largely offset reductions elsewhere, with domestic transport still the single biggest source of emissions.
The Scottish government insists significant actions have been taken over the last two years to bring emissions down further.
While many sectors have seen modest falls, emissions from overseas flights grew 19%.
It means emissions have now been cut by 51.3% since the baseline year of 1990, although the Scottish government no longer has annual targets against which the figures are measured.
The biggest reduction came from the electricity sector which has been shifting to renewables, principally onshore and offshore wind.
A big cut in generation from Scotland's only gas-fired power station, at Peterhead, saw the sector's emissions fall by 44%.
Emissions from domestic transport are the largest emitting area, responsible for 29% of the total.
Scotland's first low emission zone began operating in Glasgow half way through the year.
Emissions from agriculture are broadly unchanged, although the industry is now only the third most emitting sector.
It has been replaced in second place by heating in buildings.
Emissions from fuel production and distribution have dropped by 13%.
