With many factories and businesses closed during the Lunar New Year, China’s pollution levels usually drop. Then, soon after, they climb.
Not this time.
Chinese Air Pollution
The NASA headline said, “Airborne Nitrogen Dioxide Plummets Over China.” As the place where cars, heavy machinery, and electronics are made, Wuhan’s factories were pollution producers. Below comparing January and February, 2019 and 2020, you see less pollution.
The timing is before Lunar New Year, during, and after:
Correspondingly, China’s NO2 levels after the holiday are lower than previous years:
Chinese Manufacturing Activity
To constrain the spread of the virus, China closed many factories and established quarantined areas. Sick workers stayed home. Others needed caregivers for children not attending school. Lockdowns slowed transport of goods that were produced. And further compounding supply problems, intermediate parts were slow to arrive where they were needed. The result? Less manufacturing.
According to China’s Purchasing Managers’ Index, far below 50, manufacturing activity was not expanding:
Producing less, they are transporting less:
So where are we? We wind up with an economic indicator. Air pollution can be a yardstick of Chinese manufacturing activity.
Our Bottom Line: Economic Indicators
An economic indicator can tell us about the future, the past, and now.
- One group, called leading indicators suggests where the economy is going. They signal whether we will soon experience expansion or contraction. Building permits are leading indicators as are stock prices.
- A second series, the lagging indicators, are slow to respond to economic change. They are the indicators, for example, that remain in an expanding state for awhile when the economy begins to contract. One example of a lagging indicator is retail sales. It makes sense that it can take a while for sales to respond during the beginning of a recession, because disposable income and savings have not yet diminished considerably. Similarly, the unemployment rate is a lagging indicator.
- The third series tells us where we are right now. Called coincident, the GDP is an indicator that lets us know the current state of the economy.
So too is pollution.
My sources and more: This NASA website shows the decrease in airborne pollutants from coronavirus. Next, for more analysis, WSJ and Voxeu are possibilities.
Our featured image is from Pixabay.
