ATMS 748 Grad Atmospheric Instrumentation [main page] [assignments] [notes 2016 notes 2018].

Week 11: 6 April

Here's the link for our class.

We will continue to work on assignment 4.
Here are the soundings for the month from the Reno National Weather Service.

You can start writing the report by discussing the 'Methods/Instruments' section.
Here's a reminder of report contents.

Tuesday's Class:
Preparation:
Review notes from last Thursday's class.
Add time series analysis.
We will do diel analysis of meteorological and PM data (typical 24 hour average data) for the various sensors.
We may do wind rose analysis using the Python code given in the homework page. Install Python and run it on the example data.
We may do hysplit back trajectory analysis for the case study at 18:16 LST on February 8th.
Air pollution and COVID-19 mortality.
Air pollution and meteorology in Russia: similar to our case study.

Results:
Discussed cities as living organisms.
Discussed the paper mentioned above on the air quality in Moscow.
Did a time series for Feb 8 winds.
Prepared scatter plots and histograms of the PM2.5 and PMCoarse for the SPS30 and BAM instruments.
Whiteboard notes for today.

Thursday's Class:
Preparation:
Be sure graphs are caught up and edited for publication quality.
Note any questions you have about the analysis we've accomplished to date.
Reflect on analysis that will help understand this month and the case study on the 8th of February.
Samantha will discuss her use of hysplit back and forward trajectory analysis.

 

Related Information

Airborne virus behaviour.
Sampling virus.
Cyclone model.
Light scattering by windblown dust.
Corona virus biology.

Urban Heat Island Textbook

UNR Songs

 

 

 

Week 10: 30 March

Here's the link for our class.

We will continue to work on assignment 4.

You can start writing the report by discussing the 'Methods/Instruments' section.
Here's a reminder of report contents.

Tuesday's Class:
Preparation:
Everyone should have the sonic anemometer data and the SPS30 particle sensor data in their spreadsheet.
The two data sets should now be time aligned.
Also any data with a NaN in the sonic data should be removed from the SPS30 data as well.
We will talk about the BAM1020 PM2.5 and PM10 sensor and add its data to the spreadsheet as well.
If you are having trouble getting the spreadsheet time aligned let me know.
Your spreadsheet should look like this by now. (Some of the SPS30 data has been trimmed). Note that there are equal numbers of rows for both the sonic and SPS30 data.
When time aligned, both the sonic and SPS30 data have the same number of rows, and the same time column for each row.

Summary:
Talked a lot about how the BAM works, and did an example of mass concentration, bringing in the role of radioactive C14.
Read in the data from the BAM instrument and removed one row of data with a value of 985 ug/m3 that was associated with no sample pump flow ('bad data').
Made a time series graph of the PM2.5 and PM10 from the SPS30 for the entire month. Then copied and pasted that into a new sheet and looked at just the 8th of Feb case study.
Whiteboard notes during class. and as a png file.

Thursday's Class:
Preparation:
Make sure your spreadsheet is caught up to where we left off on Tuesday.
Begin to look at the SPS30 data to see what time (besides 18:16 LST on the 8th of Feb) that you would like to use for your case study.

Summary:
Talked about historical temperature data for London and surrounds for studying the urban heat island effect.
Discussed the case study and how to work from the broad overview perspective to a more refined perspective.
Looked at time series data for the sonic anemometer and BAM PM2.5 and PMCoarse data.
Talked about meteorological patterns in the data.
Whiteboard notes during class.

NOTE: Please reach out to me if you are having issues. We could hold office hours online and work them out. Thanks everyone for making this work.

Related Information

Airborne virus behaviour.
Sampling virus.
Cyclone model.
Light scattering by windblown dust.

Isotope carbon 14 in the atmosphere.
Beta decay.

Articles describing aerosol and health.
Dissertation (see Figure 6).
Journal article (see Figure 2).

Urban Heat Island Textbook

 

 

 

 

 

Week 9: 23 March

WE WILL USE VIDEO CONFERENCING FOR CLASS.
BE SURE TO USE THE 'SSO' LOGIN WITH THE APP, AS SHOWN HERE.

Here's the specific link for our class.
You can use your browser or download and use the app, (or both).

We will work on assignment 4 for rest of the semester.

Tuesday's Class:
Got oriented with online communication (went pretty well).
Discussed aerosol sources, types, transport, and optical properties.
Discussed the sonic anemometer theory of operation and advantages.
Read in the sonic anemometer data to Excel. Formed a 'date and time column'. Calculated wind speed and direction (See section 5 of the assignment).

Thursday's Class:
In preparation, have the sonic data read in and processed as discussed on the Tuesday class.
We will work next with the SPS30 instrument and data, the low cost air quality sensor data. We will read it into Excel and time align to the sonic data (deal with any missing data and/or low quality data).

NOTE: Please reach out to me if you are having issues. We could hold office hours online and work them out. Thanks everyone for making this work.

Related Information

Airborne virus behaviour.

Sampling virus.

Cyclone model.

Light scattering by windblown dust.

 

 

 

Week 8: 9 March

Finish working on assignment 3, detection of light using LEDs and photodiodes, and introduction to op Amps as transimpedance amplifiers.
A new sketch is available to time average the photodiode signal to obtain the response time.

The draft of assignment 4 has been posted. Read it and see which group/direction you would like to join for atmospheric measurements and interpretations.

Related Information

BPW34 photodiode data sheet.

GEER: Test facility for instruments that need to sample in extreme environments like the Venusian atmosphere.

Discussion of operational amplifiers.

 

 

Week 7: 2 March

Finish assignment 1 presentations. Talk about water vapor detection.

Begin working on assignment 3, detection of light using LEDs and photodiodes, and introduction to op Amps as transimpedance amplifiers.

Related Information

Raman scattering strength from water vapor.

BPW34 photodiode data sheet.

GEER: Test facility for instruments that need to sample in extreme environments like the Venusian atmosphere.

European Aerosol Research Lidar Network.

Discussion of operational amplifiers.

 

 

 

Week 6: 24 February

Students should be working on their instrument presentations for Assignment 1. Presentations will start on February 25.

CLASS STARTS AT 2:25 PM ON TUESDAY
SO THAT WE CAN WATCH THIS WEBINAR TOGETHER.
Student presentations commence thereafter.

Seminar/Webinar on Tuesday at 2:30-3:30 pm LST

National Center for Atmospheric Science Seminar/Webinar
http://ucarconnect.ucar.edu/live

Turbulence in complex terrain: insights from the Perdigão field campaign

by Professor Julie Lundquist
Department of Atmospheric & Oceanic Sciences University of Colorado, Boulder


Tuesday, February 25, 2020 2:30 PM - 3:30 PM Reno Time

Link to Seminar Announcement

 

 

Related Information

Raman scattering strength from water vapor.

BPW34 photodiode data sheet.

Electronic version of the projects manual we use in class.

Expresspcb software for drawing circuit diagrams.
Use the Classic Software link.
Remove the Expresspcb folder in the documents directory and replace it with this one to get the custom components like Teensy.
Add the Arduino custom component to Express Schematic by unzipping this file and placing the contents in the custom components library.
Add the analog pressure sensor custom component to Express Schematic by unzipping this file and placing the contents in the custom components library.
The Teensy pinout diagram is here.

 

 

 

 

 

Week 5: 17 February

Work on parts 5 and 6 of assignment 2, pressure sensor and digital infrared sensor.
Tuesday we will go through use of the Expresspcb software to make circuit schematics.

Students should be working on their instrument presentations for Assignment 1. Presentations will start on February 27.

Related Information

Electronic version of the projects manual we use in class.

Expresspcb software for drawing circuit diagrams.
Use the Classic Software link.
Remove the Expresspcb folder in the documents directory and replace it with this one to get the custom components like Teensy.
Add the Arduino custom component to Express Schematic by unzipping this file and placing the contents in the custom components library.
Add the analog pressure sensor custom component to Express Schematic by unzipping this file and placing the contents in the custom components library.
The Teensy pinout diagram is here.

 

 

 

Week 4: 10 February

Work on parts 3 and 4 of assignment 2.

Presentations on these sensors
TMP36  
Thermistor 

Students should be working on their instrument presentations for Assignment 1. Presentations will start on February 27.

Here's the link to the Endnote cloud-based reference database and management program.
Do steps 1 and 2
.

Related Information

Electronic version of the projects manual we use in class.

Expresspcb software for drawing circuit diagrams.
Use the Classic Software link.
Remove the Expresspcb folder in the documents directory and replace it with this one to get the custom components like Teensy.
The Teensy pinout diagram is here.

 

 

 

Week 3: 3 February

 

 

Finish working on assignment 2 in class, and begin assignment 3.

Here's the link to the Endnote cloud-based reference database and management program.
Do steps 1 and 2
.

Tuesday: Discussed report writing, using Endnote Online for reference management, figure preparation, equations, and report structure, and started part 2 of Assignment 2.

Related Information

UNR weather station graphs of the last 7 days

Electronic version of the projects manual we use in class.

Can we beat the O3 smog problem? A tale of two cities.
Atmospheric Science Talk Friday February 7th at 2 pm
Location: SLH 3


Saturday February 1st. Click for larger version.

 

Week 2: 27 January

Continue working on assignment 2 in class.
If you haven't done so, choose an instrument for presenting for assignment 1.

Tuesday: Worked on the response time measurement of photodiodes.

 

 

Related information.

Kirchoff's circuit rules.

Sky at 1:30 pm local time on 24 Jan 2020.

 

 

Week 1: 20 January

Thursday:

Begin to work with light detection using a photoresistor using LEDs as lights. Demonstrated time varying signals with measurements using the oscilloscopes and the Arduino. Used a low pass filter (capacitor) to change the response time of the LED circuit. Briefly introduced the voltage divider as a simple way to measure a variable resistor.

Tuesday:

Measurements include the value and the uncertainty - room temperature example. Introductions, assignments, and started Arduino for assignment 2 with breadboarding and meter use. Click image for larger version.

 

Introductions and orientation.
Places to learn about what is going on in this class:
Daily Notes (here).
Calendar.
The first two assignments have been posted. Assignment 1. Assignment 2.
Syllabus.
Webcampus.

Meteorological data to ponder (thanks to Chris for sharing).

Example of Small Business Innovation Research Request for Proposals with Meteorological Components.

Keep a lab notebook to record what you do and help in lab report writing.
a. Make a table of contents at the back.
b. Number the pages so you can add entries to the table of content.
Discussion of lab notebooking from CU.

First we will look at microcontrollers to acquire atmospheric data (Arduino as an implementation).

We will work with analog to digital conversion with the Arduino.
Here's the notes, click image for larger version.

We will with work with electronics,
looking at the internal resistance of our digital volt meters,
doing bread boarding, discussion of circuits, and started with the Arduino/Teensy microcontrollers.

Click on image for larger version.



[How to write lab report]

Example lab report

ALL WILL WORK TOGETHER FOR A COMMON PURPOSE: To study the atmosphere from many perspectives!

HOME STUDY THE FOLLOWING:

Useful Presentations Collected from Others.
Microcontroller fundamentals.
What is Arduino, view 1?
What is Arduino, view 2?
Spark fun intro to Arduino.
Spark fun data collection with high altitude balloons.
Maker and Arduino philosophy.

Related information.

Kirchoff's circuit rules.

Meaurement uncertainty and local backup.