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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 87-4151202

INTERNATIONAL ASSOCIATION OF METEOROLOGY AND ATMOSPHERIC SCIENC

Tax-exempt · MADISON, WI 53706

Financials

$0$21K2023$105K$77K2024$60K$114K2025
Revenue Expenses · by fiscal year end
Financials of INTERNATIONAL ASSOCIATION OF METEOROLOGY AND ATMOSPHERIC SCIENC by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990-EZ$60,423$113,966-$53,543$385,452–$385,452
December 31, 2024990-EZ$104,543$77,476$27,067$432,042–$432,042
December 31, 2023990$0$20,894-$20,894$404,976$0$404,976
Financial details: 990-EZ for the year ended December 31, 2025

Revenue

Contributions, gifts and grants
$49,531
Program service revenue
$0
Investment income
$10,892

Expenses

Grants and similar amounts paid
$89,917
Benefits paid to members
$7,012
Compensation of officers, directors and key employees
$0
Salaries, compensation and benefits (total)
$0
Professional fees and payments to contractors
$143
Printing, publications and postage
$806
Other expenses
$16,088
Program services (functional)
$58,371

Balance sheet and other

Total assets, start of year
$438,995
Total assets, end of year
$385,452
Total liabilities, end of year
–
Net assets, end of year
$385,452
Cash, savings and investments
$385,452
Gross receipts
$60,423

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990-EZ for the year ended December 31, 2025, highest compensation first.

NameTitleHours / weekCompensation
Andrea FlossmannPresident1$0
Keith AlversonSecretary General1.5$0
John P BurrowsVice President1$0
Mary ScholesVice President1$0
990-EZ for the year ended December 31, 2024: 4 people
NameTitleHours / weekCompensation
Andrea FlossmannPresident1$0
Keith AlversonSecretary General2$0
John P BurrowsVice President1$0
Mary ScholesVice President1$0
990 for the year ended December 31, 2023: 4 people
NameTitleHours / weekCompensation
Keith AlversonSecretary General
Officer
2$0
Andrea FlossmannPresident
Officer
2$0
John P BurrowsVice President
Officer
1.5$0
Mary ScholesVice President
Officer
1.5$0

Address and contacts

Address (IRS master file)
1225 W DAYTON ST, MADISON, WI 53706-1612
In care of
% STEVEN A ACKERMAN
Signed the 990-EZ
Steven, Ackerman

Mission

The corporation is organized exclusively for the promotion of charitable scientific and educational purposes and to promote the study of communication about and the public education and awareness of the sciences of the atmospheres of Earth.

990-EZ for the year ended December 31, 2025

Program accomplishments

  • Through a grant application process IAMAS supports the assemblies and workshops of its Commissions. The International Commission on Polar Meteorology ICPM is a focus for research into the meteorology and climatology of the Arctic and Antarctic. Commision participated in the IAMAS sponsored meeting in Busan. The commission also supports the upcoming 21st Workshop on Antarctic Meteorology and Climate,
    Expenses $14,000 · grants $14,000
  • IAMAS supports the attendance of early career scientists at its assemblies and other conferences and workshops. For BACO 2025 in Busan IAMAS supported facilities for total of $6371 was awarded. In addition 28 early career scientists were supported to attend the conference.
    Expenses $6,371 · grants $6,371
  • ICCL represented IAMAS in sponsoring the GEWEX Open Science Conference. A grant funded the planning of a pan-cryospheric meeting covering all aspects of the cryosphere and its climate interactions. The event includes participants from various fields from modelers and observers to social scientists and community organizers. We invite established and up-and-coming experts along with early career researchers ECRs to share their research and explore the current state of cryospheric science in early 2026.
    Expenses $8,000 · grants $8,000
  • Through an application process all IAMAS commissions can apply for funds to achieve their objectives that align with their and IAMAS mission.Support for the International Radiation Commission IRC participation in BACO2025
    Expenses $10,000 · grants $10,000
  • Support for the International Commission on Atmospehric Chemistry and Global Pollution iCACGP EGU 2025 General Assembly
    Expenses $10,000 · grants $10,000
  • Support for International Commission on Tropical Meteorology workshops
    Expenses $10,000 · grants $10,000

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990-EZ on file
2024December 31, 2024May 15, 2025990-EZ on file
2023December 31, 2023May 15, 2024990 on file

File the 2026 990-EZ for INTERNATIONAL ASSOCIATION OF METEOROLOGY AND ATMOSPHERIC SCIENC

Due May 17, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
87-4151202
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (509(a)(2))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2022
Accounting year ends
December
Files
Form 990 or 990-EZ
Category (NTEE)
Environment (C05)
Assets (IRS master file)
$385,452
Income (IRS master file)
$60,423

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-EZDecember 2025$60,423$113,966$385,452XML
990-EZDecember 2024$104,543$77,476$432,042XML
990December 2023$0$20,894$404,976XML
990-EZDecember 2022–––IRS

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 87-4151202).

Questions about INTERNATIONAL ASSOCIATION OF METEOROLOGY AND ATMOSPHERIC SCIENC

What is the EIN of INTERNATIONAL ASSOCIATION OF METEOROLOGY AND ATMOSPHERIC SCIENC?
The employer identification number (EIN) of INTERNATIONAL ASSOCIATION OF METEOROLOGY AND ATMOSPHERIC SCIENC is 87-4151202.
Is INTERNATIONAL ASSOCIATION OF METEOROLOGY AND ATMOSPHERIC SCIENC tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2022.
Are donations to INTERNATIONAL ASSOCIATION OF METEOROLOGY AND ATMOSPHERIC SCIENC tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does INTERNATIONAL ASSOCIATION OF METEOROLOGY AND ATMOSPHERIC SCIENC file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of INTERNATIONAL ASSOCIATION OF METEOROLOGY AND ATMOSPHERIC SCIENC due?
The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did INTERNATIONAL ASSOCIATION OF METEOROLOGY AND ATMOSPHERIC SCIENC last file with the IRS?
The latest return in the IRS public files is the 990-EZ for the year ended December 2025.
Who are the officers and directors of INTERNATIONAL ASSOCIATION OF METEOROLOGY AND ATMOSPHERIC SCIENC?
The 990-EZ for the year ended December 31, 2025 lists 4 people; 0 received compensation from the organization.
How much revenue does INTERNATIONAL ASSOCIATION OF METEOROLOGY AND ATMOSPHERIC SCIENC have?
On its 990-EZ for the year ended December 31, 2025 it reported revenue of $60,423, expenses of $113,966 and total assets of $385,452 at year end.

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