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We have carried out 12CO(J =2-1) and 12CO(J =3-2) observations at spatialresolutions of 1.0-3.8 pc toward the entirety of loops 1 and 2 and part of loop3 in the Galactic center with NANTEN2 and ASTE. These new results revealeddetailed distributions of the molecular gas and the line intensity ratio of thetwo transitions, R3-2/2-1. In the three loops, R3-2/2-1 is in a range from 0.1to 2.5 with a peak at ~ 0.7 while that in the disk molecular gas is in a rangefrom 0.1 to 1.2 with a peak at 0.4. This supports that the loops are morehighly excited than the disk molecular gas. An LVG analysis of threetransitions, 12CO J =3-2 and 2-1 and 13CO J =2-1, toward six positions in loops1 and 2 shows density and temperature are in a range 102.2 - 104.7 cm-3 and15-100 K or higher, respectively. Three regions extended by 50-100 pc in theloops tend to have higher excitation conditions as characterized by R3-2/2-1greater than 1.2. The highest ratio of 2.5 is found in the most developed footpoints between loops 1 and 2. This is interpreted that the foot points indicatestrongly shocked conditions as inferred from their large linewidths of 50-100km s-1, confirming the suggestion by Torii et al. (2010b). The other tworegions outside the foot points suggest that the molecular gas is heated up bysome additional heating mechanisms possibly including magnetic reconnection. Adetailed analysis of four foot points have shown a U shape, an L shape or amirrored-L shape in the b-v distribution. It is shown that a simple kinematicalmodel which incorporates global rotation and expansion of the loops is able toexplain these characteristic shapes.

High Excitation Molecular Gas in the Galactic Center Loops; 12CO(J =2-1 and J =3-2) Observations