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Online Supplemental Figures:
The Fifth International Workshop on Ice Nucleation Phase 3 (FIN-03):
Field Intercomparison of Ice Nucleation Measurements


Mirrielees, JA,1 SS Petters,2,a DJ Cziczo,3,b PJ DeMott,4 MD Petters,2 HG Bingemer,5 TCJ Hill,4 K Froyd,6,7 S Garimella,3,c AG Hallar,9,d EJT Levin,4,e I McCubbin,7 AE Perring,7,8 J Schrod,5 T Schiebel,4,10 KJ Suski,4,f D Weber,5 MJ Wolfe,3 M Zawadowicz,3,g J Zenker,1,h SD Brooks1,*

1Texas A&M University, Department of Atmospheric Sciences, College Station, TX, USA
2North Carolina State University, Department of Marine, Earth and Atmospheric Sciences, Raleigh, NC, USA
3Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, MA, USA
4Colorado State University, Department of Atmospheric Science, Fort Collins, CO, USA
5Goethe University Frankfurt, Institute for Atmospheric and Environmental Sciences, 60438 Frankfurt am Main, Germany
6NOAA Earth System Research Laboratory, Boulder, CO, USA
7CIRES, University of Colorado, Boulder, CO, USA
8Colgate University, Department of Chemistry, Hamilton, NY, USA
9Storm Peak Laboratory, Division of Atmospheric Science, Desert Research Institute, Reno, NV, USA
10Karlruhe Institute of Technology (KIT), Institute of Meteorology and Climate Research (IMK-AAF), Eggenstein-Leopoldshafen, Germany
anow at: University of North Carolina, Department of Environmental Sciences and Engineering, Chapel Hill, NC, USA
bnow at: Purdue University, Department of Earth, Atmospheric, and Planetary Sciences, West Lafayette, IN, USA
cnow at: ACME AtronOmatic, LLC, Portland, OR, USA
dnow at: University of Utah, Department of Atmospheric Sciences, Salt Lake City, UT, USA
enow at: Handix Scientific, Boulder CO, USA
fnow at: JUUL Labs, San Francisco, CA, USA
gnow at: Pacific Northwest National Laboratory, Richland, WA, USA
hnow at: Trinity Consulting, Inc., Albuquerque, NM, USA
*Correspondence: Sarah D. Brooks (sbrooks@tamu.edu)

The main text is in preparation for publication.

Introduction

This supplement contains meteorological and photographical information from the FIN-03 field campaign.

Menu

The menu at top lists campaign days by date in 2015.

Timeseries Figure

The timeseries displayed at the top of each panel.

(A) Pressure at Storm Peak Lab (SPL), as provided through Western Regional Climate Center (WRCC)

(B) Daylight hours for Sept. 11 - 28 (2015) in Denver, CO, as provided timeanddate.com

(C) Temperature at SPL, as provided through WRCC

(D) Relative humidity (RH) at SPL, as provided through WRCC

(E) Particle size distribution at SPL, measured using a Scanning Mobility Particle Sizer (TSI 3080), as provided by SPL

(F) Wind rose showing wind speed and direction at SPL, as provided by WRCC, plotted using WindRose for MATLAB by Daniel Pereira (https://dpereira.asempyme.com/windrose/)

Photo Array

Photos were taken by Sarah Petters in September 2015 from the rooftop balcony of Storm Peak Laboratory towards the South (road), West (valley), North (wilderness), and East (Skilift). These are organized by time and depict morning, mid-day, and late afternoon conditions. Hover over each photo for the time of day.

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9/15/2020 Menu now displayed across top

Friday, Day 1

graph
South West North East
On the way up
3:17 to Southwest
valley from road
3:24
On the way up
3:05 towards SPL
On the way up
3:17
On the way up
3:31
valley from road
3:29
On the way up
3:31
Skilift over road
3:22 Skilift
On the way up
3:31 to Southwest
valley from road
3:34
Paul in photo
3:44
Skilift from deck
3:45

Scattered clouds, warm, and dry.

Our vehicles raise dust. Several groups on site and setting up.

Saturday, Day 2

graph
South West North East
On the way up
8:45 am
valley from road
10:17
On the way up
9:44
On the way up
8:47
On the way up
Flow measurement
valley from road
11:35
On the way up
Biosampler
On the way up
Samples
On the way up
7:33
valley from road
5:09
On the way up
5:05 towards SPL
On the way up
5:11

Sky 100% clear, warm, dry.

First day of sampling.

Sunday, Day 3

graph
South West North East
XXX
9:40
XXX
9:41
XXX
9:32
XXX
9:41
XXX
1:08 Lost dog
XXX
1:00
XXX
1:43
XXX
1:42
XXX
4:52
XXX
4:52 to Southwest
XXX
Workspace
XXX
7:10 Bear
XXX
5:55 to South again

Clouds arriving. The road was again dusty in the morning (not pictured). Brown haze layer is present.

Stronger winds from West in the daytime (10 AM - 4 PM).

1 PM: Very hazy now, thicker cirrostratus

3 PM: Very breezy. 70-80% coverage with altostratus.

Monday, Day 4

graph
South West North East
XXX
7:56 to Southeast
XXX
7:40
XXX
7:34
XXX
7:54
XXX
8:35
XXX
8:35
XXX
8:35
XXX
8:35
XXX
1:22
XXX
1:09
XXX
1:08 to West again
XXX
1:53
XXX
5:10
XXX
5:03
XXX
5:10
XXX
5:03
XXX
6:07
XXX
6:07
XXX
6:07
XXX
6:07

Arrival of rain. Wind picked up after 6pm.

8-8:30 AM: Wind from direction of anvil cloud; transition to overcast; continued wind, clouds break up

8:45-9 AM: Vehicles arriving on dirt road

8:50 AM: Sun breaking behind Skilift, patches of broken stratocumulus

9 AM: Clear in valley, hazy

10:28,10:58 AM: Vehicles on dirt road

1:20-1:50 PM: Wind dies, first drops of rain; rain stops

5:02 PM: Rain (8 minutes)

5:30 PM: Meeting. For road dust, later arrivals will park lower on road

6:11 PM: Rain begins again, stays

Tuesday, Day 5

graph
South West North East
XXX
7:45
XXX
8:24
XXX
7:34
XXX
8:16
XXX
9:19
XXX
9:19
XXX
9:20
XXX
9:20
XXX
1:30
XXX
1:30
XXX
2:15
XXX
2:08
XXX
3:51
XXX
3:49
XXX
3:54
XXX
3:50
XXX
5:22
XXX
5:43
XXX
6:55
XXX
6:07

Rain predicted through 2:30 PM, "elective downtime" today (intercomparison cancelled due to road conditions).

1:35 PM: Rain

1:45 PM: Raining quite hard, sideways

2:10 PM: Separation of cloud layers

Wednesday, Day 6

graph
South West North East
XXX
8:43
XXX
8:43
XXX
8:59
XXX
8:43
XXX
11:56
XXX
11:56
XXX
Paul
XXX
11:56
XXX
2:51
XXX
2:51
XXX
2:51
XXX
2:51
XXX
5:59
XXX
4:48
XXX
6:00
XXX
6:01

Rain intermittently.

8:44 AM: Rain approaching; wind coming from downpour to west

9 AM: Rain has begun and stopped

9 AM: Meeting: Bike race on dirt road over weekend; Free troposphere peaks at 6am; Starting this weekend there will be smoke from California on the West wind; Children will visit on Monday

1:06 PM: Raining again

3:18 PM: 1-mm hail, roundish, for a couple of minutes

3:25 PM: Small amount of rain

3:40 PM: Intercomparison cancelled; SPIN background issues

3:41 PM: Hail again, 5 minutes

4:40 PM: Rain has stopped in valley, patchy cumulus

5:05 PM: 2 minutes of hail

Thursday, Day 7

graph
South West North East
XXX
10:31
XXX
10:32
XXX
10:32
XXX
10:31
XXX
1:14
XXX
1:13
XXX
1:14
XXX
1:14
XXX
5:01
XXX
1:53
XXX
5:53
XXX
2:07

Site closed after half day due to weather.

10 AM: Arrive in fog/rain/snow; everything is wet

10:30 AM: Rain has stopped

11 AM: Snow and sleet again

12:40 PM: Still raining

Friday, Day 8

graph
South West North East
XXX
7:43
XXX
7:58
XXX
7:50
XXX
7:53
XXX
8:07
XXX
8:07
XXX
8:07
XXX
8:07
XXX
9:07
XXX
9:06
XXX
9:07
XXX
9:07
XXX
11:37
XXX
11:37
XXX
11:38
XXX
11:37
XXX
5:27
XXX
5:26
XXX
5:27
XXX
5:27

Early snow, clear later.

8 AM: Arrive in snow/graupel

8:20 AM: Snow depth 1/2 inch

8:26 AM: Fog arrives, visibility low

9 AM: Sun is out; power plant plumes clearly visible in valley

10:32 AM: Clear sky above high cloud, clumpy low cumulus (much lower than past couple days), generally clear above, sunny, RH 51%

11:38 AM: Sunny, scattered cumulus in valley. Upper level cumulus height above mountain is constant (to East)

1:00 PM: Vehicles departing

2:40 PM: Sunny, small amount of haze

3:25 PM: Vehicles

4:15 PM: Vehicle

Saturday, Day 9

graph
South West North East
xxx
writing dissertation

Winds from West 10am-9pm. No precipitation was anticipated.

12 PM: No rain/snow overnight

Sunday, Day 10

graph

Monday, Day 11

graph
South West North East
XXX
9:56
XXX
9:56
XXX
9:56
XXX
9:56
XXX
12:10
XXX
12:10
XXX
12:10
XXX
12:10
XXX
2:38
XXX
2:37
XXX
2:38
XXX
2:38
XXX
4:09
XXX
4:09
XXX
4:10
XXX
4:09

Clear with high clouds.

10 AM: Clear and slightly hazy

11 AM: Vehicles

Tuesday, Day 12

graph
South West North East
XXX
11:50
XXX
11:50
XXX
11:50
XXX
11:50
XXX
3:49
XXX
3:49
XXX
3:49
XXX
3:49
XXX
5:38
XXX
5:37
XXX
5:38
XXX
5:38

Overcast without rain.

2 PM: Hazy with a couple of clouds downwind; Ian goes to block road after some discussions with Forest Service

3:48 PM: Virga descending on horizon; wind has died; thunderstorm downwind

Wednesday, Day 13

graph
South West North East
XXX
8:16
XXX
8:15
XXX
8:16
XXX
8:16
XXX
10:10
XXX
10:10
XXX
10:10
XXX
10:10
XXX
12:01
XXX
12:01
XXX
12:01
XXX
12:01
XXX
1:30 looking North
XXX
1:25
XXX
1:29
XXX
1:26

Breezy, scattered clouds.

Thusday, Day 14

graph
South West North East
XXX
XXX

Mandatory downtime.

Friday, Day 15

graph
South West North East
XXX
6:19 PM
XXX
6:19 PM
XXX
6:20 PM
XXX
6:20 PM

Hazy day. Wind from NW after 10am.

8 AM: Sunny and hazy

11:30 AM: Fairly hazy

6:20 PM: Very hazy, slight breeze, no clouds

Saturday, Day 16

graph
South West North East
XXX
5:44 PM
XXX
5:43 PM
XXX
5:43 PM
XXX
5:44 PM

Scattered high clouds.

Sunday, Day 17

graph
South West North East
XXX
12:12
XXX
12:12
XXX
12:12
XXX
12:12

Scattered high clouds.