(UNTITLED)

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP79-00798A001000060005-6
• Release Decision: RIFPUB
• Original Classification: K
• Document Page Count: 21
• Document Creation Date: December 9, 2016
• Document Release Date: July 18, 2000
• Sequence Number: 5
• Publication Date: September 7, 1973
• Content Type: MEMO

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EXECUTIVE OFFICE OF THE PRESIDENT
COUNCIL ON. ENVIRONMENTAL QUALITY
722 JACKSON PLACE, N. W.
WASHINGTON. D. C. 20006
*DOC Exemption Letter In ERU File* September 7, 197:3
MEMORANDUM TO
All US Project Chairmen, US-USSR Environmental Program
CEQ: Chairman Train
Mr. Busterud
Dr. Willard
Dr. T-Albot
Mr. Rayne
Mr Plehn
State: EUR/SES - Mr. Pardon (2)
EUR/SOV - Mr. Wilkinson
SCI/EN - Mr. Kulick
SCI 'SA Mr. Ganley
EPA - Mr. Strother
AmembaGsy Moscow - Dr. Tech (2 - one copy for
Hydromet)
Soviet Embassy Washington - Dr. Belov
.Interior - Dr. Skoog
DOD - Mr. Milias
NAS - Dr. Kellerman
I believe you will find the attached
report of interest concerning the Climate working
group.
Jack Perry
Special Assistant
to the Chairman
4
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August 31, 1973
MEMORANDUM
~ ~ - in stration
To: Attendees of the Informal Preparatory Meeting of
Working Group VIII on the Influence of Environmental
Changes on Clim4t
From: Nels E. Johnson
Acting Director, T-f"ernational Affairs
Attached for your information are two copies of the Report of
Informal Preparatory Meeting of Working Group VIII on the Influence
of Environmental Changes on Climate, held in Washington, D.C., on
August 27-29, 1973.
Attachment
Attendees: Dr. Wilmot N. Hess
Dr. Lester Machta
Mr. Donald H. Pack
Dr. Joseph Smagorinsky
Mr. J. 0. Fletcher
Dr. A. J. Brobecker
Mr. S.C. Coroniti
Mr. M.J. Rubin
Mr. H. April
Mr. S.R. Olenicoff
cc: r. Jack Perry, CEQ
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Report of Informal Preparatory Meeting of Working Group VIII
on the
Influence of Environmental Chai.t;c:s on Climate
in Washington, D.C.,, August 27-29, 1973
Taking advantage of the visit of Prefessor Y..P. Borisenkov and Dr. B.I.
Sazonov in the United States, Dr. Izrael arranged with Dr. Hess for an
informal meeting of Working Group VIII to consider specific proposals
to be forwarded to the full committee on Cooperation in the Field of
Environmental Protection.
The participants were:
U.S.S.R. Prof. Yevgeniy P. Borisenkov (U.S.S.R. Chairman)
Director, Main Geophysical Observatory
Leningrad
Dr. Boris I. Sazonov
Main Geophysical Observatory
Leningrad
United States` Dr. Wilmot N. Hess (U.S. Chairman)
Director,' Environmental Research Laboratories
NOAA
Dr. Lester Machta (U.S. Chairman, Subgroup 1)
Director, Air Resources Laboratory
NOAA
Mr. Donald H. Pack (U.S. Chairman, Subgroup 2)
Deputy Director, Air Resources Laboratory
NOAA
Dr. Joseph Smagorinsky (U.S. Chairman, Subgroup 3)
Director, Geophysical Fluid Dynamics Laboratory
NOAA
Mr. Joseph 0. Fletcher (U.S. Chairman, Subgroup 4)
Director, Office of Polar Programs
National Science Foundation
Dr. Alan J. Grobecker (U.S. Chairman, Subgroup 5)
Director, CLAP Program
Department'of Transportation
Mr. Samuel-C. Coroniti, DOT
Mr. N. E. Johnson, NOAA
Mr. M.J. Rubin, NOAA
Mr. H. April, NOAA
Mr. S.R. Olenicoff, NSF
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1.
General Ideas About the Program of Work..ng Group VIII
The following are identified as sub'ject',.matter elements under
Working Group VIII:
VIII
1.
Effect of. Chancing Levels of, Atmospheric Constituents
on Climate.
VIII
2.
Monitoring Atmospheric Constituents that Might Modify
Climate.
VIII
3.
Climate Modeling.
VIII
4.
Cooperation in Polar Research.
VIII
5.
Effects of Contamination of the Upper Atmosphere on
Climate.
Two additional subjects were considered to be of sufficient
significance as to warrant special attention by separate Sub-
groups. It is proposed that the following Subgroups be
constituted:
VIII
6.
Documentation on Climate Variability
VIII
7.
Solar Influences on Climate Variations
Attachments 1-7 hereto are statements of proposed activities under
these subject matter headings.
These Subgroups are eJcpected to carry out their own programs of
work on their special study areas relatively independently, and
periodic meetings of the entire Working Group will be held to
coordinate the work of the subgroups and to continue the general
program of Working Group VIII.
It is proposed that exchanges of scientists be encouraged and
arranged between Subgroup chairmen in order to carry out the
work of Working Group VIII. Exchanges of individual scientists
'between institutions in the United States and the U.S.S.R.
working on programs of the Subgroups are suggested for periods
of 3-12 months.,
Exchange visits of Working Group VIII members to institutions,
observatories, field sites, and computer centers appropriate
to their special study areas are encouraged.
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When appropriate, subgroups should be encouraged to organize
symposia for broad yet detailed exchangQ; of current research results.
It is further recommended that an integral part of any cooperative
activity planned under the several. subject matter elements include
the exchange of data and scientific results and intercalibration of
instruments and methods of observation, as appropriate.
II. Proposed Programs of each Subgroup
The major areas of study are set forth in the attachments hereto.
It is expected that they will be the basis for discussion at the
forthcoming meeting of Working Group VIII in Leningrad in May 1974.
The U.S. delegation to the Leningrad meeting will be made up of
approximately 10-12 scientists covering all subjects of Working
Group VIII. There may be somewhat more Soviet scientists meeting
with the U.S. delegation in Leningrad to cover in depth all the
subject areas. The names of the Soviet chairmen of the subgroups
will be provided to the U.S. delegation shortly. Correspondence
between U.S. and U.S.S.R. chairmen of the subgroups is encouraged
to help organize the work of the Leningrad meeting. The U.S. and
U.S.S.R. chairmen of Working Group VIII will exchange names of the
delegates of their countries who will attend the Leningrad meeting
beforehand.
It is proposed that the U.S. and U.S.S.R. delegations exchange
written reports before the Leningrad meeting on the work of each
subgroup. These reports could be made up of published technical
papers and reports of projects or new material specifically
written for this meeting. The purpose of these reports would be
to make-each subgroup chairman roughly aware of the work being
carried out on his problem area by the other country.
The activities of Subgroup VIII-4 have been progressing at a
steady pace for some time. This is due to consultations based
on already existing programs such as AIDJEX and other inter-
national planning for POLEX under the aegis of CARP. It is
recommended that these activities be continued and amplified
under Working Group VIII, but that discussions related to them
not be limited to Working Group VIII.
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III. Tentative Agenda for the Leningrad Meeting
It is proposed that the agenda be based on the subject matter of
the several subgroups. Because of the wide range of topics,
the detail that has to be covered, and the need to establish a
firm basis for future steps in implementing the cooperation in
these fields, it is recommended that the meeting consist of a
plenary session on the first two days and the last day, with
two intervening days of meetings of each of the subgroups
including the preparation of reports to the final plenary.
An important adjunct to the meeting should be visits by each
U.S. subgroup to appropriate U.S.S.R. laboratories and insti-
tutions doing significant work in the fields of the subject
matter appropriate to Working Group VIII. This should require
up to 5 days, including travel time.
IV. Comments
Full and open discussion by all participants expedited the work
of the group. The chairman expressed appreciation for the
support of the participants and the hospitality of NOAA which
provided the locale and secretarial services.
Both the U.S. and U.S.S.R. delegations are very pleased with the
prospects for future cooperation and are looking forward to the
Leningrad Meeting of Working Group VIII in May 1974.
Signed in Washington, D.C., on August 29, 1973.
pr P. Borisenkov
Director, Main Geophysical
Observatory
Leningrad
Dr. W. N. Hess
Director, Environmental
Research Laboratories
NOAA
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Attachment 1
Proposed Program of Subgroup VIII-l on the Effect of Changing Levels
of Atmospheric Constituents on Climate
Climate may be influenced by changing levels of several atmospheric
constituents. However, as a matter of first priority, the major
-areas of study of this Subgroup will initially be an investigation
of optical properties of atmospheric dust particles.
1. Most scientists believe that increasing carbon dioxide and
dust in the atmosphere are the leading candidates by which
man's activities may have or will modify the climate on a
global scale. In order to judge the climatic consequences
of increasing dust particles, it is necessary to know the
optical properties of the particles. By this is meant their
effectiveness as scattering and absorption agents.
Unfortunately, the measurement of these optical properties
is very difficult and there are, consequently, very few
observations. In addition to their optical properties, the
numbers, sizes, and possibly shapes of particles in the
0.1 to about 5micron range should be measured. There is
now-uncertainty-about the climatic effects of atmospheric
dust, Depending on the optical properties of the dust
particles and other environmental factors, they-may either
heat or cool the lower atmosphere.
2. Topics at the Plenary Meeting will include the needs for and
the present capability to measure atmospheric dust particles
(both natural such as from volcanic eruptions and man made)
and their optical properties.
Topics for discussion at the Subgroup Meeting in Leningrad
will include an evaluation of the following potential methods
for obtaining the optical properties of atmospheric dust
particles:
a. Measurements of the direct and scattered solar beam and
sky polarization.
b. In-situ measurements by a nephelometer or similar instru-
ment to determine the scattering or absorptive properties
of the atmospheric aerosol.
C. Collection of atmospheric particles on filter papers or
other collectors followed by a laboratory analysis of
their properties..
d. Theoretical calculations of the optical properties of
particles based on known composition, shape and size,
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3. Possible areas for future cooperation include:
a. Measurement and analysis programs employing the most
promising research avenues to determine the optical
properties of the atmospheric dust particles.
b. If these promising avenues involve measurements of the
atmospheric dust.and they prove successful they may
later be incorporated in the monitoring programs of
the United States and the U.S.S.R.
c. Investigation of the atmospheric properties of other
constituents with climate modification potential
such as carbon dioxide and ozone, etc., should be
undertaken.
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Proposed Program of Subgroup VIII-2 on Monitoring Atmospheric Constituents
that Might Modify Climate
A. The major area of study of this Subgroup will be the:
Measurements of trace materials in "clean air" and suggestions
on the organization of a global network of stations to determine
global background levels. their geographical variability and long-
term trends. Achieving these objectives requires meticulous
observation and rigid quality control. In addition, to maximize
the usefulness of the individual national programs to produce a
compatible global data base, a program to compare measurement
programs, instruments and data processing is required.
Measurement needs have been outlined at the U.N. Conference on
the Human Environment and the meteorological-climate need developed
in greater detail by the WMO 's program for regional and baseline
monitoring. The WNO criteria for baseline stations--measurement of
(1) turbidity,, (2) carbon dioxide, and (3) collection of precipita-
tion for chemical analyses--are priority items for consideration.
B. Topics for-discussion at the Plenary Meeting in Leningrad will
include general information on the U.S. Global Monitoring Stations
and related U.S.S.R..-work on techniques for measuring trace constit-
uents of the atmosphere and the results of such measurements for
CO2 and 03 and turbidity.
Topics for discussion at the Subgroup Meeting in Leningrad will
include:
l.- Requirements for siting Global Monitoring Stations.
2. Techniques for measuring C02 to 0.1 ppm
3. Preparation and use of reference gases
4. Precision measurements of Ozone.
5. Techniques for measuring atmosphere turbidity
6. Intercalibration of instruments
C. Possible areas for future cooperation include:
1. Exchange of visits to baseline observatories beginning with a
visit by U.S. scientists to a U.S.S.R. baseline observatory
site with a reciprocal visit to the U.S. Mauna Loa Observatory
in- connection with a subsequent meeting of the Working Group VIII.
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2. Exchange of baseline monitoring instrumentation.
Exchange and operation, at baseline stations of
a. Carbon dioxide measuring system and/or
b. radiometric systems for turbidity.
This exchange would include a visit by the responsible
scientist to the respective baseline stations for a
sufficient time to instruct in equipment operation and
resolve problems in systems integration (voltage, frequency,
data logging, etc.).
3. Develop procedures, formats, and time schedules for data
exchange from the respective baseline observatories.
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 Attachment 3
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Proposed Program of Subgroup VIII-3 on Climatic Modeling
A. The major area of stud1 of this subgroup will be on numerical models
of the atmosphere and/or oceans capable of predicting (1) the
dispersive properties of the geophysical fluid media, and (2) the
secondary reactions, such. as climatic variability or sensitivity
or possible instabilities, to changes in atmospheric constituents
or boundary conditions.
This subject of modeling overlaps the work of other subgroups. The
chairmen of the different subgroups might consider holding joint
subgroup meetings or use other techniques to exchange data with
Subgroup VIII 3.
B. Topics for discussion at the Plenary Meeting in Leningrad will
include present and proposed programs in the United States and
U.S.S.R. on numerical models capable of studying climatic change.
Topics for. discussion at the Subgroup Meeting in Leningrad will
include:
1. Effects of C02 changes in 1-dimensional and 3-dimensional models
2. Effects of solar constant changes in 1-dimensional and
3-dimensional models
3. Analysis of stability properties of some existing atmospheric models
4. Climatic effects of ocean-atmosphere interactions
5. "Dispersive properties of the GFDL Zodiac model
C. Possible areas for future cooperation include:
1. Intercomparison of simulation properties of existing U.S. and
U.S.S.R. climate models
2. The construction of new numerical models of the interactive
atmosphere-hydrosphere-cryosphere system.
3. The design of simulation experiments
4. The analysis and interpretation of simulation experiments
5. The specification. of new observational requirements
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Such. activity will he' dire-cted toward investigating the
climatic impact of changes of:
o gaseous constituents, e.g., CO21 03, H2O
o particulate constituents, e.g., dust and clouds
o solar radiation
o, surface albedo
o surface hea''-
o surface heat capacity
o surface evaporability
o oceanic mobility
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Proposed Program of Subgroup 7I.LI74 on Cooperation in Polar Research
A. The. major area ` of study of this subgroup will be- an investigation
of the influence of the polar regions in both hemispheres on
the formation of the weather and climate of our planet. These
studies will include:
1. An investigation of the dynamics of the ice cover and the
numerical modeling of these processes.
An investigation of the mechanisms
interaction between the. atmosphere
.regions over ice surfaces and over
ocean surfaces.
of thermal and dynamic
and ocean in polar
intensely turbulent
3. An investigation of the components of the heat balance of
the atmosphere and underlying surface in polar regions.
4. An investigation of water, ice, and energy exchange between
polar regions and temperate latitudes.
5. Cooperative efforts directed toward establishing observation
programs necessary for the numerical modeling of the inter-
action of the atmosphere, ice, and water in polar regions.
6. Cooperative field investigations.
B. Topics for discussion at the'Plenary Meeting in Leningrad will
include cooperative efforts under the- POLEX program for the
north_ polar regions and preparatory. steps for a POLEX-South
program, and also cooperative efforts between the ongoing
AIDJEX program in the United States and POLEX program in the
Soviet Union.
Topics for discussion at the Subgroup Meeting in Leningrad will
include:
1. A discussion of theoretical models of ice cover dynamics and
the results of numerical experiments conducted at the University
of Washington (Seattle) and in the U.S.S.R. at the Arctic and
Antarctic Research Institute, the Hydrometeorological Institute,
and the Institute of Oceanology.
2. A discussion of the. results of investigations on the thermo-
dynamic interaction between atmosphere and ocean in the Arctic.
3. A discussion of possible cooperative experiments utilizing
Soviet and U.S. automatic pack-ice stations in the Arctic.
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A discussion of plans and practical possibilities for coop-
erative investigations in the nortl 'ern.parts of the Atlantic
and Pacific Oceans using scientific research ships and
satellites to study water, ice, and energy exchange between
the.polar regions and temperate latitudes.
C. Possible areas for future cooperation, including specific proposals
to be implemented upon mutual agreement
1. -Exchange -of -Specialists - A continuing exchange of polar
specialists should be initiated as soon as feasible with the
aim of improving mutual understanding of common interests and
activities, enhancing progress on specific problems of mutual
interest and identifying mutually desirable avenues for
cooperation.
Some specific recommendations in this area are as follows:
a. Soviet specialists in ice dynamics and computer application
should join the AIDJEX theoretical modeling group at the
University of Washington (Seattle) for approximately 6 months
beginning. early in 1974. These guest specialists should
be followed by Soviet specialists in boundary layer fluid
dynamics.
b. A U.S. specialist in polar bibliographic and information-
exchange services should participate in a working visit to
the U.S.S.R. early in 1974, followed by other U.S. guest
specialists in ice dynamics and numerical modeling.
2, -'Joint Participation in Field Experiments - In March/April 1974,
a small AIDJEX Field experiment on thermodynamic ocean/atmosphere
interaction will be conducted on the pack ice north of Barrow,
Alaska. It would be desirable for a Soviet specialist in
boundary layer theory to participate in this experiment. The
principal U.S. investigator for this experiment is Dr. Clayton
Paulson at Oregon State University (Corvallis, Oregon). The
Soviet guest specialist should arrive by approximately
February 1, 1974, to allow for project discussion and orienta--
tion before proceeding to the field site.
3. Coordination of Field Measurements - It is proposed that U.S.
and U.S.S.R. field measurements of ice dynamics and ocean/
atmosphere parameters be conducted in such ways as to provide
maximum mutual support of common experimental objectives.
(articular attention should be given to opportunities for
-mutual support in the employment of automatic stations on
pack ice, and to the intercalibration of instruments and
methods of observation.
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Some. s,pe.ci..fic possibiliitic.s in this,. area are as follows:
a. The automatic data Buoy array planned for the main AIDJEX
experiment in 1975-76 could Be augmented By Soviet DARKS
stations located according to'a`jointly prepared plan.
The APJJEX data buoys would at the same time serve to
extend and augment the data and area coverage of the
DARMS network. Thus, both the U.S. and U.S.S.R. national
programs and the international POLEX and CARP programs
would be enhanced.
b. The possibility, of coupling the RAMS-NISSBUS F data relay and
positioning system with the. DARMS sensor systems should be
evaluated and discussed and,, if possible, implemented
for inutually--beneficial use during the AIDJEX experiment.
c. The exchange of U.S. and Soviet specialists between drifting
stations and scientific research ships, as well as possible
jQint logistic support for special cooperative efforts
supporting the-objectives of POLEX and AIDJEX should be
discussed and evaluated.
Exchange of Ice Cores -- One of the most useful means of
reconstructing past variations in global climate is the analysis
of ice cores obtained in polar regions. The vast opportunities
for the application of this technique are limited by the
relatively expensive drilling required for the extraction of
cores from Arctic and Antarctic ice fields. Once obtained,
only one--fourth to one-half of a core is adequate for most
analysis purposes. It is recommended that, to the extent
feasible, ice cores or core sections be exchanged to permit
independent analysis and comparison of results.
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Proposed Program of. Subgroup VIII-5 on Effects of'Contamination of
the Upper Atmosphere on Climate
A. The major area of study of this subgroup will be on alterations
of the upper atmosphere and stratosphere by high flying airplanes.
In order to understand these alterations it is necessary also to
understand the natural properties of the stratosphere. In the
United States, the Department of Transportation has a Climatic
Impact Assessment Program (CIAP) to study this problem.
B. Topics for discussion at the Plenary Meeting at Leningrad will
include general information on the U.S. CIAP program and related
U.S.S.R. work including measurements of effluents of aircraft,
measurements of natural stratospheric composition, studies of
photochemical processes and reaction rates, studies of models of
the stratosphere, and discussions of possible changes of strato-
spheric properties related to high-flying aircraft.
Topics for discussion at the Subgroup Meeting at Leningrad will
include:
1. What are the general interrelations of radiation and dynamic
control of the stratosphere, photochemistry, climatology, and
dynamics of the stratosphere?
2. What are the sources, sinks, and residence times'of strato-
spheric constituents?
3. What are the important chemical reactions of the gases in
the stratosphere?
4. How well known are the chemical rate coefficients and which
of these need further study?
5. What naturally resident aerosols need to be introduced into
our calculations?
6. What species are emitted, at what mass rate, at optimum
power levels of the engines which will be flying at
stratospheric altitudes?
7. What are the. routes and frequency of travel which are
projected for 1990?
8. How is the height distribution of radiation within the
stratosphere determined?
9. How is the radiation affected by the gaseous and aerosol
constituents of the at:~osphere?
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10. What is the radiation within the 6t.ratosphere received from
the sun, expressed in terms of mean.and standard deviations?
11. What is the radiation within the stratosphere received from
below?
12. What are the sources of'motion within the stratosphere?
13. What is the spectrum of motion energy within the stratosphere,
expressed in terms of mean and, standard deviations?
14. What is the interrelation of gradients of temperature, velocity,
and ehcmical densities?
15. What are the mean temperatures and winds in the stratosphere
and how do they vary as functions of latitude, longitude, and
altitude?
16. What factors must be included in a computer simulation of the
stratosphere?
17. What are the limitations on computer stratospheric simulations
done in the next 2 years?
18. In what ways can a complete model of the stratosphere-troposphere-
ocean, as planned for future development at Geophysical Fluid
Dynamics Laboratory, be abridged to derive answers desired by
CLAP?
19. What concepts and techniques for remote and in situ measurements
are presently available and most applicable to measure water
vapor, ozone, the trace. gases important to CLAP, and particulates?
20. What direct. observations of the climatology of the troposphere can
be of'assistance in exploring troposphere-stratosphere relations?
The Subgroup 5 meeting in Leningrad will work from this list of
questions but they will not all be covered in detail.
C. Possible areas of future cooperation include:
1. Exchange of data on stratospheric composition
?2. Exchange of data on airdraft effluents in the atmosphere
and how they are measured.
3. Exchange of information on end results of stratospheric models.
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3
4. Exchange of information on plans and studies on proposed
- effluents of high flying aircraft.
5. Development of a joint program of study on effects from high
flying aircraft.
6. Experimental measurements of time and spatial variations of
natural stratospheric gases and aerosols.
7. The monitoring of ultraviolet on the ground.
8. The development of reliable instruments to measure, in-situ,
of stratospheric gases, especially water vapor and NOR.
9. Study the interaction of aircraft effluents with the
constituents of the natural stratosphere.
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Attachment 6
Proposal for New Subgroup VII?-6 on Documentation of Climatic
Variability
An essential element in understanding the sensitivity of climate
to environmental changes is a knowledge and an understanding of
climatic variations of the past. The purpose of this Subgroup
is to assemble specialists in the disciplines now contributing
to the developing field of climatography and to organize joint
efforts to measure and to establish the character and geographic
extent of past climatic variations.
The investigations essentially fall into several broad time
spans:
1. The past several decades during which new global aerological
observations have been available. Systematic cloud and
humidity observations are relatively unique to this time
span.-
2. The past century during which industrialization may have
been a factor.
3. The past several thousand years during which recorded
history is available.
4. Paleoclimatic epochs, particularly the quarternary glaciation,
which-are only accessible through interpretation of natural
remnants of the past.
The latter time span and to some extent the former ones, require
meteorological. interpretation of data provided by experts in
geology, glaciology, dendrochronology, ice coring and ocean bottom
sedimentation.
Detailed discussion of the need for and requirement for fulfilling
this task is contained in the forthcoming report of the U.S.
National Academy of Science Committee on Climatic Variation.
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Proposal for Adding; an Additional,Subject to the Program of Working
Group VIII-7
The U.S. and U.S.S.R. members of the Preparatory Meeting of
Working Group VIII propose that we add as a new subject for
Working Group VIII a study of Solar Activity and Its Effect on
Climate. There has been considerable interest in this subject
in recent years both in the United States and in the U.S.S.R.
A session of the IUGG Conference at Moscow in 1971. and a
forthcoming conference at the Goddard Space Flight Center of
NASA both.study this subject. It seems proper now to try to
start a cooperative effort between U.S. and U.S.S.R. scientists
to increase our knowledge of this subject. We propose to add
a Subgroup 7 on this subject and to have this Subgroup meet
with the rest of Working Group VIII at Leningrad. If this
proposal is approved, Subgroup 7 members would carry out the
following activities at the Leningrad meeting:
1. Present selected scientific lectures on empirical findings
and possible physical mechanisms involved in interactions
between solar activity and meteorological phenomena.
2. Present and adopt formal plans for exchanges of data and
information involving U.S. and U.S.S.R. work in progress
under the Working Group VIII program, in the subcommittee
area.
3. Hold discussions of special observations needed to advance
the understanding of possible physical mechanisms to explain
the empirical findings.
4. Present plans for the exchange of scientists under the
subcommittee auspices.
Possible areas for future cooperative studies by this new Subgroup
might be:
1. Make measurements and exchange data on solar magnetic field
sector boundaries, in order to extend data base for vorticity
and other circulation analyses,
2. Prepare north hemisphere contour maps of high positive
vorticity before and-.after geomagnetic key dates (dates of
large rise of geomagnetic index) for comparison with
already existing pressure maps, extend such techniques to
other circulation indices and new time periods.
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 Approved For Release 2000/08/23 : CIA-RDP79-00798AO01000060005-6
3. Analyze 300 mb vorticity maps and other circulation patterns
following the January to June 1973 large recurrent auroral
disturbances. Place emphasis on vorticity behavior in Gulf
of Alaska area and in the area east of the Urals, in Siberia.
Cfwenty-seven day recurrence as well as pronounced associa-
tions of geomatnetic-auroral disturbances may be expected
with circulation indices in this period.)
4. Analyze cirrus cloud formation as related to geomagnetic
disturbances over the Gulf of Alaska and Siberian areas
east of the Urals. (tall require satellite data.)
5. Seek means for improving observations (satellite or ground)
the measurement of large-area average thunderstorm activity
before and after geomagnetic disturbances and other
manifestations of solar activity.
Approved For Release 2000/08/23 : CIA-RDP79-00798AO01000060005-6