diff --git a/.gitattributes b/.gitattributes
index 5446ac0cd92033a0c82f1a3498eb100f7478745d..80685f49579a85c8b10de55b9651cedb3128c01e 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,3 +1,4 @@
 echam/* filter=lfs diff=lfs merge=lfs -text
 fesom/* filter=lfs diff=lfs merge=lfs -text
 jsbach/* filter=lfs diff=lfs merge=lfs -text
+hdmodel/* filter=lfs diff=lfs merge=lfs -text
diff --git a/hdmodel/hdpara_glac1d_lgm_echam6.nc b/hdmodel/hdpara_glac1d_lgm_echam6.nc
new file mode 100644
index 0000000000000000000000000000000000000000..52856b345b7207c5ed1fc309419ee9f40ba9f320
--- /dev/null
+++ b/hdmodel/hdpara_glac1d_lgm_echam6.nc
@@ -0,0 +1,3 @@
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diff --git a/hdmodel/hdpara_knorr_echam6.nc b/hdmodel/hdpara_knorr_echam6.nc
new file mode 100644
index 0000000000000000000000000000000000000000..52856b345b7207c5ed1fc309419ee9f40ba9f320
--- /dev/null
+++ b/hdmodel/hdpara_knorr_echam6.nc
@@ -0,0 +1,3 @@
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