diff --git a/met/l1jump_jer_v1.json b/met/l1jump_jer_v1.json
new file mode 100644
index 0000000..4c85b33
--- /dev/null
+++ b/met/l1jump_jer_v1.json
@@ -0,0 +1,27 @@
+{
+    "version": 1,
+    "description": "JUMP L1 jet resolution: σ(pT)[GeV] = a(ηbin)·pT + b(ηbin); |η| bins at [1.3, 1.7, 2.5, 3.0]; used to build dPx,dPy for MET update.",
+    "eta_bins": 4,
+    "eta_edges": [
+        1.3,
+        1.7,
+        2.5,
+        3.0
+    ],
+    "eta": {
+        "par0": [
+            0,
+            0.073,
+            0.247,
+            0.128,
+            0.091
+        ],
+        "par1": [
+            0,
+            12.322,
+            6.061,
+            10.944,
+            12.660
+        ]
+    }
+}
\ No newline at end of file
diff --git a/met/l1met_ptphi2pxpy_poly2_v1.json b/met/l1met_ptphi2pxpy_poly2_v1.json
new file mode 100644
index 0000000..5419b5f
--- /dev/null
+++ b/met/l1met_ptphi2pxpy_poly2_v1.json
@@ -0,0 +1,136 @@
+{
+  "version": 1,
+  "description": "L1METEmu 2nd-order polynomial coefficients for cos/sin; 16 phi bins over [-pi, pi]; phi_edges in radians.",
+  "phi_bins": 16,
+  "phi_edges": [
+    -1.0,
+    -0.875,
+    -0.75,
+    -0.625,
+    -0.5,
+    -0.375,
+    -0.25,
+    -0.125,
+    0.0,
+    0.125,
+    0.25,
+    0.375,
+    0.5,
+    0.625,
+    0.75,
+    0.875,
+    1.0
+  ],
+  "cos": {
+    "par0": [
+      -1.00007,
+      -0.924181,
+      -0.707596,
+      -0.382902,
+      -0.000618262,
+      0.382137,
+      0.707056,
+      0.923708,
+      1.00007,
+      0.924181,
+      0.707594,
+      0.383285,
+      0.000188727,
+      -0.382139,
+      -0.706719,
+      -0.923708
+    ],
+    "par1": [
+      9.164680268990924e-06,
+      0.0017064607695524156,
+      0.0031441321076514446,
+      0.004079929656016374,
+      0.004437063290882583,
+      0.004095969231842202,
+      0.0031107221424451436,
+      0.001689531075808071,
+      -9.161756842493832e-06,
+      -0.001706456406229286,
+      -0.003143961938049376,
+      -0.004103015998697129,
+      -0.004411145151490469,
+      -0.0040958165155326525,
+      -0.0031310072316764474,
+      -0.001689531075808071
+    ],
+    "par2": [
+      9.319674765430664e-06,
+      7.871694899063284e-06,
+      5.222989318251642e-06,
+      2.0256106486379287e-06,
+      -1.9299417402361656e-06,
+      -5.35167113952279e-06,
+      -7.740062096537953e-06,
+      -9.348822844786505e-06,
+      -9.319674765430664e-06,
+      -7.871694899063284e-06,
+      -5.225331064666252e-06,
+      -1.780776301343235e-06,
+      1.6556927733433181e-06,
+      5.3495197789955455e-06,
+      7.954684107366423e-06,
+      9.348822844786505e-06
+    ]
+  },
+  "sin": {
+    "par0": [
+      0.000524872,
+      -0.382229,
+      -0.706791,
+      -0.923959,
+      -1.00008,
+      -0.924156,
+      -0.707264,
+      -0.383199,
+      -0.000525527,
+      0.382228,
+      0.706792,
+      0.923752,
+      1.00013,
+      0.924155,
+      0.707535,
+      0.3832
+    ],
+    "par1": [
+      -0.004431478237276202,
+      -0.00409041472149773,
+      -0.0031267268116859314,
+      -0.00167440343451641,
+      9.741773386162849e-06,
+      0.0017049641497188307,
+      0.00312406082125351,
+      0.0040978672774037465,
+      0.004431478237276202,
+      0.00409041472149773,
+      0.0031266351819002015,
+      0.0016868781753450394,
+      -1.249302315254411e-05,
+      -0.001704846339994321,
+      -0.003140405829698437,
+      -0.0040978672774037465
+    ],
+    "par2": [
+      1.870674613498914e-06,
+      5.292404012785538e-06,
+      7.909829192302831e-06,
+      9.188746390688592e-06,
+      9.313525301268721e-06,
+      7.887020962996302e-06,
+      5.435897856093815e-06,
+      1.8358587462761668e-06,
+      -1.870668901922293e-06,
+      -5.292404012785538e-06,
+      -7.908420336736317e-06,
+      -9.320836119343602e-06,
+      -9.284396260501616e-06,
+      -7.88869635880513e-06,
+      -5.262894200243701e-06,
+      -1.835864457852788e-06
+    ]
+  }
+}
\ No newline at end of file