diff --git a/observations/marine/insitu_profile_tropical.yaml.j2 b/observations/marine/insitu_profile_tropical.yaml.j2
new file mode 100644
index 0000000..8cdc4e1
--- /dev/null
+++ b/observations/marine/insitu_profile_tropical.yaml.j2
@@ -0,0 +1,33 @@
+- obs space:
+    name: {{observation_from_jcb}}
+    obsdatain:
+      engine:
+        type: H5File
+        obsfile: "{{marine_obsdatain_path}}/{{marine_obsdatain_prefix}}{{observation_from_jcb}}{{marine_obsdatain_suffix}}"
+    obsdataout:
+      engine:
+        type: H5File
+        obsfile: "{{marine_obsdataout_path}}/{{marine_obsdataout_prefix}}{{observation_from_jcb}}{{marine_obsdataout_suffix}}"
+    simulated variables: [waterTemperature]
+    observed variables: [waterTemperature]
+    io pool:
+      max pool size: 1
+  obs operator:
+    name: Composite
+    components:
+    - name: InsituTemperature
+      variables:
+      - name: waterTemperature
+  obs error:
+    covariance model: diagonal
+  obs filters:
+  - filter: Perform Action
+    action:
+      name: assign error
+      error function:
+        name: ObsFunction/LinearCombination
+        options:
+          variables:
+          - ObsError/waterTemperature
+          coefs:
+          - 1000.0
diff --git a/observations/marine/insitu_surface_drifter.yaml.j2 b/observations/marine/insitu_surface_drifter.yaml.j2
new file mode 100644
index 0000000..8cdc4e1
--- /dev/null
+++ b/observations/marine/insitu_surface_drifter.yaml.j2
@@ -0,0 +1,33 @@
+- obs space:
+    name: {{observation_from_jcb}}
+    obsdatain:
+      engine:
+        type: H5File
+        obsfile: "{{marine_obsdatain_path}}/{{marine_obsdatain_prefix}}{{observation_from_jcb}}{{marine_obsdatain_suffix}}"
+    obsdataout:
+      engine:
+        type: H5File
+        obsfile: "{{marine_obsdataout_path}}/{{marine_obsdataout_prefix}}{{observation_from_jcb}}{{marine_obsdataout_suffix}}"
+    simulated variables: [waterTemperature]
+    observed variables: [waterTemperature]
+    io pool:
+      max pool size: 1
+  obs operator:
+    name: Composite
+    components:
+    - name: InsituTemperature
+      variables:
+      - name: waterTemperature
+  obs error:
+    covariance model: diagonal
+  obs filters:
+  - filter: Perform Action
+    action:
+      name: assign error
+      error function:
+        name: ObsFunction/LinearCombination
+        options:
+          variables:
+          - ObsError/waterTemperature
+          coefs:
+          - 1000.0