BOSTON – Anyone who thinks the international weather community has given up the fight to protect key portions of the radio frequency spectrum from 5G interference is mistaken.
After losing a battle at the International Telecommunication Union’s World Radiocommunication Conference 2019 in Egypt, meteorologists, atmospheric scientists, aerospace engineers and radio frequency experts met at the American Meteorological Conference to plan their next campaign.
“We are really deeply worried about this microwave spectrum,” said Wenjian Zhang, World Meteorological Organization assistant secretary-general. “We face the danger that this critical band will be polluted by 5G.”
In the last 20 years, passive microwave sensors on weather satellites have detected faint signals emitted by water vapor in the atmosphere from 23.6 to 24 GHz. Data drawn from those sensors “is the most significant contributor to reduced forecast error,” according to Developing a Sustainable Spectrum Approach to Deliver 5G Services, a paper released Jan. 13 by the Aerospace Corp.’s Civil Spectrum Management Group.
Those signals are “absolutely key to knowing what is going on in the atmosphere,” said David Lavers, a European Centre for Medium-Range Weather Forecasts scientist.
World Radiocommunication Conference delegates agreed to allow 5G technologies to operate from 24.25-27.5 GHz as long as ...