NASA/GSFC/Atmospheric Chemistry and Dynamics
Newsletter No. 30, 12/2020

SHADOZ Notes
Southern Hemisphere ADditional OZonesondes
A NASA/Goddard Space Flight Center public archive of tropicaland remote ozonesonde profile data

SHADOZ Sites: https://tropo.gsfc.nasa.gov/shadoz
SHADOZ is a NASA project to augment and archive
balloon-borne ozonesonde launches and to archive
data from tropical and remote operational sites. The
project was initiated in 1998 by NASA/Goddard Space
Flight Center, the NOAA/Global Monitoring Division,and international co-investigators. There are currently
thirteen stations launching ozonesondes in theSHADOZ network. The collective data set provides thefirst climatology of tropical ozone in the equatorialregion, enhances validation studies aimed at improving satellite remote sensing techniques for tropical ozone
estimations, and serves as an educational tool to students, especially in participating countries.

 Natal Resumes Operations
After COVID-19 Shutdown With the unprecedented events surrounding COVID-19
shutdowns, all of the SHADOZ stations and their staff
went to great lengths to safely maintain or resume theirlaunch schedules. At Natal, Brazil, ozonesondelaunches and Dobson readings resumed earlyNovember 2020. Great effort by the entire NATAL
team pictured below!
Figure (Top, left-to-right):
Kelvem L. de Freitas,
Francisco R. da Silva,
Moisés F. de Queiroz, andTércio L. B. Penha (INPE)
around Dobson instrument.
(Bottom, left-to-right):
Kelvem and Tércio
launching ozonesonde on
25 November 2020.

 NASA & LAPAN Sign
Agreement for Restart ofSHADOZ in Indonesia NASA and LAPAN (photo left) signed a cooperative
agreement in Nov. 2020 for ozonesonde launches
and data sharing with Indonesia. This arrangement
resumes SHADOZ ozonesonde operations at theWatukosek, Java station, discontinued in 2013. Dr.
Ninong Komala (photo right) trains LAPAN staff forlaunches expected to resume in early 2021.

Figure (Left): Christianus R. Dewanto (LAPAN)
signs agreement in Nov. 2020. (Right): Dr.
Ninong Komala and the LAPAN Watukosek
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staff practice launches early 2020.

SHADOZ Newsletter No. 30

 SHADOZ at Virtual Meetings & NASA Award Recipients
• Fall 2020 meetings organized remotely had a SHADOZ presence:(1) SAGE III/ISS Science Team Meeting, October 19-20, 2020: R. Stauffer presented an update on
the Ticosonde project in Costa Rica. A. Thompson summarized new tropical SHADOZ ozone trends.
(2) ASOPOS Report 2.0 Authors & Reviewers Meeting, October 28, 2020: Several SHADOZ Co-Is
or contributors participated as either a co-author or reviewer of the new ASOPOS 2.0 Report. A major
accomplishment in 2020 is the finalization of this latest update to Ozonesonde Standard
Operating Procedures (SOPs ). WMO will publish the Report in 2021.
(3) NDACC Steering Committee Meeting, 4-6 Nov 2020: R. Stauffer, new Sonde Working Group CoChair, discussed results from Stauffer et al. (2020) (listed below) on the observed Total Column Ozone(TCO) dropoff in ozonesonde data at ~1/3 of global stations, including SHADOZ & Canadian sites. A.
Thompson presented an overview of the status of SHADOZ stations in 2020 including COVID-19
impacts.
• In other news, NASA Goddard Space Flight Center awarded a NASA group achievement award to three
SHADOZ contributors for their influential work on the Stauffer et al. (2020) paper (listed below): RyanStauffer (lead author, SHADOZ Res. Assoc), Debra Kollonige (SHADOZ Archiver), and Rennie Selkirk(SHADOZ Co-I). Congratulations!

Recent noteworthy ozonesonde publications Tarasick, D. W., Smit, H. G. J., Thompson, A. M., Morris, G. A., Witte, J. C., Davies, J., et al. (2020). Improving ECC
ozonesonde data quality: Assessment of current methods and outstanding issues, accepted for AGU’s Earth andSpace Science, 2019EA000914RRR.
Vömel, H., Smit, H. G. J., Tarasick, D., Johnson, B., Oltmans, S. J., Selkirk, H., Thompson, A. M., Stauffer, R. M.,Witte, J. C., Davies, J., van Malderen, R., Morris, G. A., Nakano, T., and Stübi, R. (2020). A new method to correct
the ECC ozone sonde time response and its implications for “background current” and pump efficiency, AMT, 13,
5667–5680, https://doi.org/10.5194/amt-13-5667-2020.

Stauffer, R. M., Thompson, A. M., Kollonige, D. E., Witte, J. C., Tarasick, D. W., Davies, J., et al. (2020). A post-2013
dropoff in total ozone at a third of global ozonesonde stations: Electrochemical concentration cell instrument
artifacts? Geophys. Res. Lett., 47, e2019GL086791, https://doi.org/10.1029/2019GL086791.
Thompson, A. M., et al. (2019). Ozonesonde Quality Assurance: The JOSIE-SHADOZ (2017) Experience. Bull. Amer. Meteor.
Soc. https://doi.org/10.1175/BAMS-D-17-0311.1
Sterling, C. W., et al. (2018). Homogenizing and estimating the uncertainty in NOAA’s long term vertical ozone profile records
measured with the electrochemical concentration cell ozonesonde. Atmos. Meas. Tech. https://doi.org/10.5194/amt-2017-397
Witte, J. C., A. M. Thompson, H. G. J. Smit, H. Vömel, R. Stübi, and F. Posny (2018). First Reprocessing of Southern Hemisphere
ADditional OZonesondes (SHADOZ) Profile Records. 3. Uncertainty in Ozone Profile and Total Column. J. Geophys. Res., 123.
https://doi.org/10.1002/2017JD027791
Thompson, A. M. et al. (2017). First Reprocessing of Southern Hemisphere ADditional OZonesondes (SHADOZ) Ozone Profiles(1998-2016). 2. Comparisons with Satellites and Ground-based Instruments. J. Geophys. Res., 122.
https://doi.org/10.1002/2017JD027406
Witte, J. C., A. M. Thompson, et al. (2017). First reprocessing of Southern Hemisphere ADditional OZonesondes (SHADOZ)
profile records (1998-2015) 1: Methodology and evaluation. J. Geophys. Res., 122. https://doi.org/10.1002/2016JD026403

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SHADOZ Newsletter No. 30

 Upcoming Relevant Meetings  Attention Data Users:
SHADOZ will be represented at the following:
10-14 Jan. 2021:
American Meteorological Society Meeting
14-16 April 2021:
Ozone Research Managers Meeting
13-17 September 2021:
NDACC Steering Committee Meeting
International Global Atmos. Chem. (IGAC) Meeting
3-9 Oct 2021:
Quadrennial Ozone SymposiumSeoul,Korea

 Questions about SHADOZ should be directed toPI, Anne Thompson. SHADOZ data sets areproducts of evolving research by the site CoInvestigators (Co-Is) and ongoing communitycollaboration.
 The SHADOZ homepage gives technical andcontact information for each station and their CoIs responsible for the original data processing.
Co-Is should be consulted for details of their
methods & appropriate references to their work.
 Questions about the final data and any news
updates should be directed to the Archiver:Debra Kollonige.

►SHADOZ Network Science Team◄

Dr. Anne M. Thompson
Principal Investigator (PI)anne.m.thompson@nasa.gov

Dr. Ryan M. Stauffer
SHADOZ Research Assoc.
ryan.m.stauffer@nasa.gov

Dr. Debra E. Kollonige
Data Archiver/Webmasterdebra.e.kollonige@nasa.gov

SHADOZ Site

Principal Investigator (PI), Station Chiefs and Operators

Ascension Is., U.K.

Anne Thompson (PI; anne.m.thompson@nasa.gov) & Ryan Stauffer (NASA/GSFC) Peter Crane &Patrick Benjamin, Leroy Hudson, Iona Yon (US Air Force AFSPC E-ROS/Wolf Creek)

San Pedro, Costa Rica

Susan Strahan (PI, susan.e.strahan@nasa.gov; NASA/USRA), Holger Vömel (NCAR), Jorge Andres
Diaz & Ernesto Corrales (UCR)

Hanoi, Vietnam

Shin-Ya Ogino (PI; ogino-sy@jamstec.go.jp; JAMSTEC), Nguyen Thi Hoang Anh, Tran Thu Huang &Lai Thanh Nga (AMO)

Hilo, HI, USA

Bryan Johnson (PI; bryan.johnson@nasa.gov; NOAA/GMD), David Nardini & Darryl Kuniyuki(NOAA/MLO)

Irene, South Africa

Gert J. R. Coetzee (PI; gerrie.coetzee@weathersa.co.za; SAWS), Tshidi Machinini (SAWS)

Kuala Lumpur, Malaysia

Mohan Kumar Sammathuria (PI; mohan@met.gov.my), Mohd Firdaus Bin Jayaha, Nur Aleesha
Abdullah & Ab Rahman Buang (MMD)

La Réunion Is., FranceFrançoise Posny (PI; francoise.posny@univ-reunion.fr), Jean-Marc Metzger (U. Réunion)

Nairobi, Kenya

Christian Félix (PI; christian.felix@meteoswiss.ch), Réné Stübi & Gonzague Romanens (Meteoswiss),
Kennedy Thiongo (KMD)

Natal, Brazil

Francisco R. da Silva, Tercio L. B. Penha, Moisés F. de Queiroz, & Kelvem L. de Freitas (INPE)

Paramaribo, Surinam

Ankie Piters (PI; ankie.piters@knmi.nl) & Marc Allart (KNMI), Sukarni Mitro & George Paiman (MDS)

Pago Pago, Am. Samoa

Bryan Johnson (PI; NOAA/GMD), LTJG Diane M. Perry (NOAA/ASO)

San Cristóbal, Ecuador

Bryan Johnson (PI; NOAA/GMD), INAMHI

Suva, Fiji

Bryan Johnson (PI; NOAA/GMD), Matakite Maata, Francis Mani & Miriama Vuiyasawa (USP)

Newsletter Editor: Debra E. Kollonige (debra.e.kollonige@nasa.gov)