POWER OF ATTORNEY
                      FOR SECTION 16 REPORTING OBLIGATIONS

KNOW ALL BY THESE PRESENTS, that the undersigned hereby makes, constitutes and
appoints Jim Snyder, as the undersigned's true and lawful attorney-in-fact, with
full power and authority as hereinafter described on behalf of and in the name,
place and stead of the undersigned to:

(1)   prepare, execute in the undersigned's name and on the undersigned's behalf
      and submit to the U.S. Securities and Exchange Commission (the "SEC") a
      Form ID, including amendments thereto, and any other documents necessary
      or appropriate to obtain codes and passwords enabling the undersigned to
      make electronic filings with the SEC of reports required by Section 16(a)
      of the Securities Exchange Act of 1934 and the rules and regulations
      promulgated thereunder, as amended (the "Exchange Act");

(2)   prepare, execute, acknowledge, deliver and file Forms 3, 4, and 5
      (including any amendments thereto) with respect to the securities of
      Americold Realty Trust, a Maryland real estate investment trust (the
      "Company"), with the SEC, any national securities exchanges and the
      Company, as considered necessary or advisable under Section 16(a) of the
      Exchange Act;

(3)   seek or obtain, as the undersigned's representative and on the
      undersigned's behalf, information on transactions in the Company's
      securities from any third party, including brokers, employee benefit plan
      administrators and trustees, and the undersigned hereby authorizes any
      such person to release any such information to the undersigned and
      approves and ratifies any such release of information; and

(4)   perform any and all other acts which in the discretion of such attorney-
      in- fact are necessary or desirable for and on behalf of the undersigned
      in connection with the foregoing.

The undersigned acknowledges that:

(1)   this Power of Attorney authorizes, but does not require, such attorneys-
      in- fact to act in their discretion on information provided to such
      attorney-in-fact without independent verification of such information;

(2)   any documents prepared and/or executed by such attorney-in-fact on behalf
      of the undersigned pursuant to this Power of Attorney will be in such form
      and will contain such information and disclos ure as such attorney-in-
      fact, in his or her discretion, deems necessary or desirable;

(3)   this Power of Attorney does not relieve the undersigned from
      responsibility for compliance with the undersigned's obligations under the
      Exchange Act, including without limitation the reporting requirements
      under Section 16 of the Exchange Act; and

(4)   neither the Company nor such attorney-in-fact assumes any liability for
      the undersigned's responsibility or failure to comply with the
      requirements of the Exchange Act, including without limitation for profit
      disgorgement under Section 16(b) of the Exchange Act.

The undersigned hereby ratifies all that such attorneys-in fact of, for and on
behalf of the undersigned, shall lawfully do or cause to be done by virtue of
this Power of Attorney.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 11th day of April, 2018.

                                        /s/ Michelle M. MacKay
                                    --------------------------
                                        Signature

                                        /s/ Michelle M. MacKay
                                    --------------------------
                                        Print Name