Questionnaires of Environmental Problem about Air Pollution and Space Debris

One measurement of PM10 at Na Phralan Police Station Saraburi showed a value of 186 μg/m^3

a) What is the Air Quality Index and Levels of Health Concern at the time of measurement?

b) What do you think the proper response of people and/or local government to this condition must be?

a). PM10 = 186 μg/m^3 has the Air Quality Index Value of 101 – 150. It indicates the Levels of Health concerns are unhealthy for sensitive groups.

b). This condition should be a response wisely. It is the responsibility of every party. The government should find solutions to reduce this matter such as publishing the rule for the industry to manage the smoke of their industry so it will not affect the residential area, stopping the dealing forest fire and the other activities which can produce the smoke. Another party is the people who ought to use public transportation to lower the smoke pollution of private cars or motorcycles. The proper response is they are government, people and stakeholders should do the synchronizing solution. The Government published the rule to minimize the smoke industries, then the stakeholders and/or the people have to obey the rule. This case cannot be left alone because it will increase the level of air quality index and it will cause more danger towards human and environmental sustainability.'

References

Mopa Wambebe, N., & Duan, X. (2020). Air quality levels and health risk assessment of particulate matters in abuja municipal area, Nigeria. Atmosphere, 11(8), 1–15. https://doi.org/10.3390/ATMOS11080817

Stockholm Environment Institute. (2021). Air quality in Thailand Understanding the regulatory context. February.

Suggest a method to minimize the risk of space debris.

A method to minimize the risk of space debris is accelerating the natural decay of spacecraft and other space objects to reduce the time that they remain in orbit. There are several ways:

• A rocket body with a ratio of cross-sectional area to the mass of 0.01 m^2/kg in an 800 km circular orbit, for example, would require about half the amount of propellant to reduce its orbital lifetime to 10 years it would require to deorbit. Performing either maneuver would remove a large, long-lived (up to hundreds of years) hazard from LEO (Low Earth Orbit).
• Rocket bodies launched into transfer orbits with low perigees experience much more rapid orbital decay than those launched into orbits with higher perigees; when possible, this can be a very effective means of limiting the orbital lifetimes of rocket bodies in highly elliptical orbits

References:

Orbital Debris: A Technical Assessment (1995), Chapter: 7 Techniques to Reduce The Future Debris Hazard. Link: https://www.nap.edu/read/4765/chapter/10