Air Monitoring 33
Chinese scientists pioneer high-altitude environmental monitoring in Himalayas TALKING POINT
Last year, on May 4th, 2022, a team of Chinese scientists successfully established the world’s highest automatic weather station at over 8,800 meters altitude on Mount Qomolangma, known to Westerners as Mount Everest. This group of specialists from Earth Summit Mission 2022 were made instantly famous as China’s state broadcaster, China Central Television (CCTV), allowed audiences to witness the event live. Beginning their ascent in the small hours of the morning, the 13 team-members reached the site just after noon. An hour later, the weather station was installed and the summit sported China’s national fl ag.
Since 2017, China has been building up its environmental monitoring infrastructure across the Himalayas in an attempt to get a better picture of what’s happening on the Tibetan Plateau, known amongst ecologists as the Water of Tower of Asia. An indispensable pillar of the continent’s ecologies and economies, this plateau is widely recognised amongst researchers to be uniquely sensitive to climate change – but much of the fi ner points of its ongoing transformation, particularly the impact on water quality, remain mysterious. So, China’s aiming to fi ll those gaps in knowledge. For the fi rst time, for instance, after the Everest mission, the thickness of ice and snow at the summit was measured using high-precision radar. Now, China boasts eight similar research stations on Everest, monitoring a variety of climatic parameters including temperature, humidity, wind speed and radiation changes.
Flow Calibrator
mod. CF1 Call the CF1 a “fl ow calibrator” is quite reductive because, of course, it measures the actual/normalized fl owrate but it also measures the volume passing through the cell, ambient pressure, gas temperature and pressure drop of the line.
A second version named CF1-UR is available and, through an external sensor, also measure ambient temperature and relative humidity.
The CF1 features an annular laminar fl ow cell which grants a fl owrate range with a very wide dynamic 1:100 (from 0,45 to 45 l/min) and capability to measures fl ows both sampled or delivered by the pump.
CF1 is compact and light (only 300 gr) and is equipped with LiPO batteries which makes it perfect as secondary reference for fi eld operations.
But all CF1 sensors can be ISO17025 certifi ed, which makes it suitable also as primary reference for fl owrate, volume, pressure, temperature and rH% in lab.
CF1 has also wireless communication capabilities, it will be supplied with USB dongle for direct communication of all the readings through the software (under development) for long lasting sampler tests. The software will also allow to program the certifi cates into the unit.
A high accuracy calibration is available as option to deliver the unit with fl owrate accuracy of 0,8% ± 0,1% f.s.!
What else can be asked to fl ow calibrator? Yes, yes, we
know....the price!
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This year, Chinese scientists made history once again by establishing monitoring stations atop the world’s sixth-tallest summit, another Himalayan peak, Mount Cho Oyu, making it only the second time that a Chinese research team has ascended beyond 8,000-meters. Snow-capped and icy year- round (cho oyu means ‘turquoise goddess’ in Tibetan), the mountain off ers an invaluable natural repository for climatic data, revealing the secrets of high-altitude environmental shifts over time. With ice depths reaching over 70 meters, ice cores extracted from the site off er the prospect of unravelling cryospheric mysteries going back millions of years. Even more importantly, the team installed automatic weather stations at various altitudes which will ensure comprehensive data collection. The highest of these stations, positioned at Cho Oyu’s peak, successfully relayed meteorological data, revealing a chilling temperature of minus 18 degrees Celsius at the summit. Powered by solar panels, these weather stations, designed to operate continuously for two years, will transmit invaluable data like temperature fl uctuations, wind patterns, and solar radiation. All of which will enable scientists to conduct more comprehensive ecological assessments in an attempt to pin down humanity’s impact on the system.
Poignantly, the Cho Oyo expedition was the fi rst to have taken place after an historic conservation law aimed at preserving this life-saving plateau’s fragile ecology came into force. Part of a series of similar statutes, including the
Yangtze River Protection Law, the Yellow River Protection Law and the Black Soil Protection Law, the Qinghai-Tibet Plateau Act prohibits production and construction activities that may cause further soil erosion, bans sand mining and other mining activities that do not meet conservation requirements for river sources, imposes strict rules against the construction of hydropower stations on the plateau and prescribes penalties for littering. As climate change continues to exert its infl uence across the globe, high-altitude monitoring in the Himalayas will be part of the front-line in defending crucial ecosystems and determining our response to their deterioration.
New, advanced solution for stack emission sample conditioning
The GD1 is an advanced, rugged and effi cient solution developed by Dado Lab for stack emission sample conditioning for portable or rack mounted AMS. GD1 is available both as portable or rack mounted version. Weighing only 13 kgs, the portable GD1 is very easy to transport to the fi eld.
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