The Chinese also launched weather balloons near their theodolites to measure atmospherictemperature and pressure changes to better estimate refraction errors.
中国还在经纬仪附近发射了气象气球来测量大气温度和压力变化，以更好地估计折射误差。
2
Over the past 50 years, there has been noticeable rise in the atmospherictemperature.
在过去的50年里，大气温度有着明显的升高。
3
An increase in the Earth's average atmospherictemperature, esp. resulting from the greenhouse effect.