Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to...
Transcript of Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to...
![Page 1: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/1.jpg)
Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator
OCEANS AND ATMOSPHERE FLAGSHIP
Melita Keywood and Alain Protat20 May 2015
![Page 2: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/2.jpg)
• cloud over SO >0.8 in a band between 40°and 60°S
• reanalysis underestimates cloud cover by about 0.1-0.2
Naud et al., 2014
Poor simulation of Southern Ocean Clouds
2 |
Wood et al., (
Sate
llite
obs
Rean
alys
is pr
oduc
ts
![Page 3: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/3.jpg)
Photo from Dagmar3 |
What’s so important about the atmosphere over the Southern Ocean?
Two main cloud regimes affecting the shortwave radiation in the SO1) frontal clouds because they are highly reflective2) low-level clouds because they are ubiquitous (Haynes et al. 2011)
Large radiation bias for Southern Ocean (models overestimate radiation) e.g. Trenberth and Fasullo(2010)
![Page 4: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/4.jpg)
Southern Ocean- modern surrogate for pre-industrial aerosol conditions
• aerosol forcing associated with ACI over the SO is small relative to NH
Adapted from Kooperman et al. (2012)4 |
![Page 5: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/5.jpg)
SOCRATES Whilte Paper 2014
Cape Grim
5 |
The processes that influence cloud-forming aerosol properties in the remote marine atmosphere such as the SO are poorly understood (Quinn and Bates 2011)
![Page 6: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/6.jpg)
DMS only important in summer
Presentation title | Presenter name6 |
![Page 7: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/7.jpg)
RV Investigator
7 |
![Page 8: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/8.jpg)
Maiden Science Voyage INV2015-v01
• Piggy backed onto Moorings voyage
• 21-29 March 2015
Presentation title | Presenter name8 |
Baseline sector- 22-28
![Page 9: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/9.jpg)
9 |
![Page 10: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/10.jpg)
Relationship to Cape Grim • Ship was in Baseline sector 22-28 March
• Back trajectories (96 hours) carried out every 6 hours
• 5 cases of back trajectory passing through location of ship (approx.)
• 18 hours behind• 23 March (no CN data) • 26 March (CCN and CN
data)• CPC colocation at Cape
Grim agreed within 1%• CCN colocation at Cape
Grim agreed within 20%
CCN 190CN 260
CCN 82CN 400
![Page 11: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/11.jpg)
Photo by Dougie11 |
![Page 12: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/12.jpg)
Periodical features
12 |
![Page 13: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/13.jpg)
Diurnal features
13 |
![Page 14: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/14.jpg)
Different patterns
14 |
![Page 15: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/15.jpg)
Presentation title | Presenter name15 |
From Alain Protat and Eric Schulz
![Page 16: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/16.jpg)
Summary of quick look at data
• Remove smoke plume• CN concentrations between 100-800 particles cm-3
• CCN concentrations 20-200 particles cm-3
• CN decreases from SO to Cape Grim; CCN increases• 5 day cycle CN and DMS (clearer in 2nd half of journey when data
set is more complete• CCN/CCN ratio increases on 26th from 20% to 80% and remains at
80%- after this we see a clear diurnal cycle in CN, CCN, SO4 but not DMS
• Increase in CCN/CN followed by presence of low level clouds (less than 1km)
16 |
![Page 17: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/17.jpg)
What next?
More voyages on RV Investigator (for instruments and others)CAPRICORN- Clouds, Aerosols, Precipitation, Radiation, and atmospheric Composition Over the southeRn oceaN –led by Alain Protat- March 2016ACRE -Antarctic Cloud and Radiation Experiment led by Simon Alexander (AAD)- Macquarie Island 2016SOCRATES- proposal- US led-SO Clouds, Radiation, Aerosol Transport Experimental Study (SOCRATES)CSIRO OCE Post Doc – being advertised now! See CSIRO Careers web sitehttp://csiro.nga.net.au/?jati=252ba9a8-bac7-16df-b7c4-88cea809bb90
17 |
![Page 18: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/18.jpg)
Acknowledgements
• Alain Protat (BoM)• Jason Ward, James Harnwell, Suzie Molloy, Marcel van der Schoot, Paul
Selleck, Sarah Lawson, Ian Galbally CSIRO• Zoran Ristovski, Luke Cravigan, Joel , Branka QUT• Dave Griffith and Dagmar UoW• Robyn Schofield, Dougie, Stephani Uni Melbourne• Grant Edwards Macquarie Uni• MNF Operations particularly Max Maguire and Lisa Woodward• Ian McRobert, Will Ponsonby, Steve Thomas, Brett Muir CSIRO• Leigh Roberts CSIRO• Crew • MNF TAG• O&A CDF and MNF for providing operating • Ken Glasson (BoM), Tom Trull (Voyage Leader), Eric Shultz (BoM)
18 |
![Page 19: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/19.jpg)
Presentation title | Presenter name19 |
Photos by Stewart Wilde
![Page 20: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/20.jpg)
Presentation title | Presenter name20 |
![Page 21: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/21.jpg)
Presentation title | Presenter name21 |
![Page 22: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/22.jpg)
Presentation title | Presenter name22 |
![Page 23: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/23.jpg)
Presentation title | Presenter name23 |
![Page 24: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/24.jpg)
Presentation title | Presenter name24 |
![Page 25: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/25.jpg)
Presentation title | Presenter name25 |
![Page 26: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/26.jpg)
Presentation title | Presenter name26 |
![Page 27: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/27.jpg)
Presentation title | Presenter name27 |
![Page 28: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/28.jpg)
Presentation title | Presenter name28 |
![Page 29: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/29.jpg)
Presentation title | Presenter name29 |
![Page 30: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/30.jpg)
Presentation title | Presenter name30 |
![Page 31: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/31.jpg)
Presentation title | Presenter name31 |
![Page 32: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/32.jpg)
Presentation title | Presenter name32 |
![Page 33: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/33.jpg)
Presentation title | Presenter name33 |
![Page 34: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/34.jpg)
Presentation title | Presenter name34 |
![Page 35: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/35.jpg)
Presentation title | Presenter name35 |
![Page 36: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/36.jpg)
Presentation title | Presenter name36 |
![Page 37: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/37.jpg)
Presentation title | Presenter name37 |
![Page 38: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/38.jpg)
Presentation title | Presenter name38 |
![Page 39: Aerosol, Clouds and the Southern Ocean · Aerosol, Clouds and the Southern Ocean From Cape Grim to the RV Investigator ... influence cloud-forming aerosol properties in the remote](https://reader033.fdocuments.net/reader033/viewer/2022060303/5f08d9ca7e708231d424070a/html5/thumbnails/39.jpg)
Photo from Dagmar39 |