EXHIBIT 99.1

                    CERTIFICATION BY CHIEF EXECUTIVE OFFICER

        I, Bruce Cleland, the Chief Executive Officer of Campbell & Company,
Inc. as managing owner of Campbell Alternative Asset Trust, certify that (i) the
Form 10Q for the quarter ended September 30, 2002 of Campbell Alternative Asset
Trust fully complies with the requirements of Section 13(a) or 15(d) of
the Securities Exchange Act of 1934 and (ii) the information contained in the
Form 10Q for the quarter ended September 30, 2002 fairly presents, in all
material respects, the financial condition and results of operations of Campbell
Alternative Asset Trust.

                                    CAMPBELL ALTERNATIVE ASSET TRUST
                                    By: Campbell & Company, Inc., managing owner


                                    By: /s/ Bruce Cleland
                                       ---------------------------------
                                       Bruce Cleland
                                       Chief Executive Officer
                                       November 14, 2002



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