What is Supercooled Liquid Water? Supercooled Liquid Water (SLW) refers to water droplets in a cloud that can stay in a liquid state at below freezing temperatures. If an airplane flies into these SLW droplets, icing on the wings and airframe can occur.
About Micro Pulse LiDAR (MPL)
Micro Pulse LiDAR (MPL) instruments, have been helping scientists, meteorologists and air quality professionals monitor clouds and aerosols to better understand the structure of our atmosphere since 1997. MPL’s long-range capabilities and high-quality signal increase efficiency and accuracy of the data capture process for improved atmospheric mapping. Designed for NASA, MPL uses eye safe lasers, precision photon counting electronics, and built-in data analysis to deliver a rich source of atmospheric feature information for uncovering changes in our environment.
Our products and accessories offer powerful, sophisticated, yet compact and affordable, laser remote sensing systems, which provide continuous, unattended monitoring of the profiles and optical properties of clouds and aerosols in the atmosphere. Learn more about our two main product offerings.
- Aerosols and clouds up to 25km
- Weighs only 28kg
- Best SNR in class
- NASA MPLNET ready
- < 250 W needed
- Aerosols and clouds up to 15km
- Weighs only 12kg
- Best SNR in class
- Available in multiple wavelengths
- Ultra-stable, rigid optics
- < 100 W needed
Some of the hundreds of locations where you’ll find Micro Pulse LiDAR instruments at work …
A rooftop at NASA Goddard Space Flight Center … a Himalayan base camp … the sky over the Sierra Nevadas … the deck of an icebreaker in the fleet of the Korean Polar Research Institute … the Port of Newcastle, Australia … Bariloche Airport in Argentina.
MPL is an optimal instrument for supporting a broad range of demanding applications:
- Cloud layer mapping
- Disaster response (monitoring of dangerous atmospheric pollutants from industrial facilities)
- Planetary boundary layer (PBL) measurements and studies
- Weather modification operations
Wildfire monitoring and prediction
- Urban air quality monitoring and prediction
- Volcanic ash plume monitoring
FROM THE BLOG
Accurately identifying and quantifying particulate matter (PM) in the atmosphere is key to determining air quality. Researchers are particularly interested in PM that have a diameter of less than 2.5 micrometers because they are believed to contribute to heart and lung disease in humans and animals.
There are so many examples of interesting research using Micro Pulse LiDAR (MPL) technology it is difficult to decide on my favorites; however, I have chosen to highlight the following two papers because these applications for the MPL and MiniMPL address problems that are very important to global health.
If you are evaluating backscatter LiDAR sensors for measuring aerosols, cloud vertical structure, and planetary boundary layer (PBL) heights, what factors should you consider in your comparison? It really comes down to a choice between the traditional analog technology used in ceilometers and the more recent advanced technology found in Micro Pulse LiDAR (MPL) sensors.
The famous statistician George Box said “All models are wrong, but some are useful”—for calculating air quality indices and emissions estimates this is certainly true. One way to increase the utility of models is to use up-to-the-minute, local Planetary Boundary Layer (PBL) measurements as an input when generating top-down emissions estimates.
Micro pulse style lidars are active remote sensing tools proven to be highly useful in atmospheric research. This style of backscatter lidar has been around for decades; however, incremental improvements in photon counting, sensitivity, polarization, optical filters, coatings, and precision machining of each element support increasingly accurate analysis.