diff --git a/parm/ioda/bufr2ioda/bufr2ioda_insitu_profile_tropical.json b/parm/ioda/bufr2ioda/bufr2ioda_insitu_profile_tropical.json
new file mode 100644
index 000000000..8bb4ebd47
--- /dev/null
+++ b/parm/ioda/bufr2ioda/bufr2ioda_insitu_profile_tropical.json
@@ -0,0 +1,12 @@
+{
+  "data_format"      : "dbuoy",
+  "subsets"          : "DBUOY",
+  "source"           : "NCEP data tank",
+  "data_type"        : "dbuoy",
+  "cycle_type"       : "{{ RUN }}",
+  "cycle_datetime"   : "{{ current_cycle | to_YMDH }}",
+  "dump_directory"   : "{{ DMPDIR }}",
+  "ioda_directory"   : "{{ COM_OBS }}",
+  "data_description" : "6-hrly in situ drifting buoy (TAC:drifters, etc) profiles",
+  "data_provider"    : "U.S. NOAA"
+}
diff --git a/parm/ioda/bufr2ioda/bufr2ioda_insitu_profile_tropical.yaml b/parm/ioda/bufr2ioda/bufr2ioda_insitu_profile_tropical.yaml
new file mode 100644
index 000000000..a3a1fc68b
--- /dev/null
+++ b/parm/ioda/bufr2ioda/bufr2ioda_insitu_profile_tropical.yaml
@@ -0,0 +1,11 @@
+cycle_datetime: '{{ current_cycle | to_YMDH }}'
+cycle_type: '{{ RUN }}'
+data_description: 6-hrly in situ drifting buoy (TAC:drifters, etc) profiles
+data_format: dbuoy
+data_provider: U.S. NOAA
+data_type: dbuoy
+dump_directory: '{{ DMPDIR }}'
+ioda_directory: '{{ COM_OBS }}'
+source: NCEP data tank
+subsets: DBUOY
+ocean_basin: '{{ OCEAN_BASIN_FILE }}'
diff --git a/parm/ioda/bufr2ioda/bufr2ioda_insitu_surface_drifter.json b/parm/ioda/bufr2ioda/bufr2ioda_insitu_surface_drifter.json
new file mode 100644
index 000000000..8bb4ebd47
--- /dev/null
+++ b/parm/ioda/bufr2ioda/bufr2ioda_insitu_surface_drifter.json
@@ -0,0 +1,12 @@
+{
+  "data_format"      : "dbuoy",
+  "subsets"          : "DBUOY",
+  "source"           : "NCEP data tank",
+  "data_type"        : "dbuoy",
+  "cycle_type"       : "{{ RUN }}",
+  "cycle_datetime"   : "{{ current_cycle | to_YMDH }}",
+  "dump_directory"   : "{{ DMPDIR }}",
+  "ioda_directory"   : "{{ COM_OBS }}",
+  "data_description" : "6-hrly in situ drifting buoy (TAC:drifters, etc) profiles",
+  "data_provider"    : "U.S. NOAA"
+}
diff --git a/parm/ioda/bufr2ioda/bufr2ioda_insitu_surface_drifter.yaml b/parm/ioda/bufr2ioda/bufr2ioda_insitu_surface_drifter.yaml
new file mode 100644
index 000000000..a3a1fc68b
--- /dev/null
+++ b/parm/ioda/bufr2ioda/bufr2ioda_insitu_surface_drifter.yaml
@@ -0,0 +1,11 @@
+cycle_datetime: '{{ current_cycle | to_YMDH }}'
+cycle_type: '{{ RUN }}'
+data_description: 6-hrly in situ drifting buoy (TAC:drifters, etc) profiles
+data_format: dbuoy
+data_provider: U.S. NOAA
+data_type: dbuoy
+dump_directory: '{{ DMPDIR }}'
+ioda_directory: '{{ COM_OBS }}'
+source: NCEP data tank
+subsets: DBUOY
+ocean_basin: '{{ OCEAN_BASIN_FILE }}'
diff --git a/parm/soca/obs/config/insitu_profile_tropical.yaml b/parm/soca/obs/config/insitu_profile_tropical.yaml
new file mode 100644
index 000000000..146a1fb8c
--- /dev/null
+++ b/parm/soca/obs/config/insitu_profile_tropical.yaml
@@ -0,0 +1,41 @@
+obs space:
+  name: insitu_profile_tropical
+  obsdatain:
+    engine:
+      type: H5File
+      obsfile: ${DATA}/obs/${OPREFIX}insitu_profile_tropical.${PDY}${cyc}.nc4
+  obsdataout:
+    engine:
+      type: H5File
+      obsfile: ${DATA}/diags/insitu_profile_tropical.${PDY}${cyc}.nc4
+  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
+
+obs localizations:
+- localization method: Rossby
+  base value: 100.0e3
+  rossby mult: 1.0
+  min grid mult: 2.0
+  min value: 200.0e3
+  max value: 900.0e3
diff --git a/parm/soca/obs/config/insitu_surface_drifter.yaml b/parm/soca/obs/config/insitu_surface_drifter.yaml
new file mode 100644
index 000000000..ec11969e8
--- /dev/null
+++ b/parm/soca/obs/config/insitu_surface_drifter.yaml
@@ -0,0 +1,41 @@
+obs space:
+  name: insitu_surface_drifter
+  obsdatain:
+    engine:
+      type: H5File
+      obsfile: ${DATA}/obs/${OPREFIX}insitu_surface_drifter.${PDY}${cyc}.nc4
+  obsdataout:
+    engine:
+      type: H5File
+      obsfile: ${DATA}/diags/insitu_surface_drifter.${PDY}${cyc}.nc4
+  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
+
+obs localizations:
+- localization method: Rossby
+  base value: 100.0e3
+  rossby mult: 1.0
+  min grid mult: 2.0
+  min value: 200.0e3
+  max value: 900.0e3
diff --git a/parm/soca/obs/config/sss_smap_l2.yaml b/parm/soca/obs/config/sss_smap_l2.yaml
new file mode 100644
index 000000000..ab04a1f5d
--- /dev/null
+++ b/parm/soca/obs/config/sss_smap_l2.yaml
@@ -0,0 +1,44 @@
+obs space:
+  name: sss_smap_l2
+  obsdatain:
+    engine:
+      type: H5File
+      obsfile: !ENV ${DATA}/obs/${OPREFIX}sss_smap_l2.${PDY}${cyc}.nc4
+  obsdataout:
+    engine:
+      type: H5File
+      obsfile: !ENV ${DATA}/diags/sss_smap_l2.${PDY}${cyc}.nc4
+  simulated variables: [seaSurfaceSalinity]
+  io pool:
+    max pool size: 1
+get values:
+  time interpolation: linear
+obs operator:
+  name: Identity
+  observation alias file: obsop_name_map.yaml
+obs error:
+  covariance model: diagonal
+obs filters:
+- filter: Domain Check
+  where:
+  - variable: {name: GeoVaLs/sea_area_fraction}
+    minvalue: 0.9
+- filter: Bounds Check
+  minvalue: 0.1
+  maxvalue: 40.0
+- filter: Background Check
+  threshold: 5.0
+- filter: Domain Check
+  action:
+    name: passivate
+  where:
+  - variable: {name: GeoVaLs/sea_surface_temperature}
+#    minvalue: 10.0
+    maxvalue: -4.0
+    ## Gaussian_Thinning is having problems with LETKF, try again later
+# - filter: Gaussian_Thinning
+#   horizontal_mesh:   25.0 #km
+- filter: Domain Check
+  where:
+  - variable: {name: GeoVaLs/distance_from_coast}
+    minvalue: 100e3
diff --git a/parm/soca/obs/config/sss_smos_l2.yaml b/parm/soca/obs/config/sss_smos_l2.yaml
new file mode 100644
index 000000000..87e249792
--- /dev/null
+++ b/parm/soca/obs/config/sss_smos_l2.yaml
@@ -0,0 +1,44 @@
+obs space:
+  name: sss_smos_l2
+  obsdatain:
+    engine:
+      type: H5File
+      obsfile: !ENV ${DATA}/obs/${OPREFIX}sss_smos_l2.${PDY}${cyc}.nc4
+  obsdataout:
+    engine:
+      type: H5File
+      obsfile: !ENV ${DATA}/diags/sss_smos_l2.${PDY}${cyc}.nc4
+  simulated variables: [seaSurfaceSalinity]
+  io pool:
+    max pool size: 1
+get values:
+  time interpolation: linear
+obs operator:
+  name: Identity
+  observation alias file: obsop_name_map.yaml
+obs error:
+  covariance model: diagonal
+obs filters:
+- filter: Domain Check
+  where:
+  - variable: {name: GeoVaLs/sea_area_fraction}
+    minvalue: 0.9
+- filter: Bounds Check
+  minvalue: 0.1
+  maxvalue: 40.0
+- filter: Background Check
+  threshold: 5.0
+- filter: Domain Check
+  action:
+    name: passivate
+  where:
+  - variable: {name: GeoVaLs/sea_surface_temperature}
+#    minvalue: 10.0
+    maxvalue: -4.0
+## Gaussian_Thinning is having problems with LETKF, try again later
+# - filter: Gaussian_Thinning
+#   horizontal_mesh:   25.0 #km
+- filter: Domain Check
+  where:
+  - variable: {name: GeoVaLs/distance_from_coast}
+    minvalue: 100e3
diff --git a/parm/soca/obs/obs_list.yaml b/parm/soca/obs/obs_list.yaml
index c11dc1ace..84faedf7c 100644
--- a/parm/soca/obs/obs_list.yaml
+++ b/parm/soca/obs/obs_list.yaml
@@ -2,6 +2,10 @@ observers:
 # ADT
 - !INC ${MARINE_OBS_YAML_DIR}/adt_rads_all.yaml
 
+#SSS
+- !INC ${MARINE_OBS_YAML_DIR}/sss_smap_l2.yaml
+- !INC ${MARINE_OBS_YAML_DIR}/sss_smos_l2.yaml
+
 # SST
 - !INC ${MARINE_OBS_YAML_DIR}/sst_avhrr_ma_l3u.yaml
 - !INC ${MARINE_OBS_YAML_DIR}/sst_avhrr_mb_l3u.yaml
@@ -41,3 +45,5 @@ observers:
 #- !INC ${MARINE_OBS_YAML_DIR}/insitu_profile_dbuoyb.yaml
 #- !INC ${MARINE_OBS_YAML_DIR}/insitu_profile_mbuoy.yaml
 #- !INC ${MARINE_OBS_YAML_DIR}/insitu_profile_mbuoyb.yaml
+- !INC ${MARINE_OBS_YAML_DIR}/insitu_profile_tropical.yaml
+- !INC ${MARINE_OBS_YAML_DIR}/insitu_surface_drifter.yaml
diff --git a/parm/soca/obsprep/obsprep_config.yaml b/parm/soca/obsprep/obsprep_config.yaml
index 02f4edb5d..59c84d552 100644
--- a/parm/soca/obsprep/obsprep_config.yaml
+++ b/parm/soca/obsprep/obsprep_config.yaml
@@ -1,7 +1,7 @@
 observations:
 # SSS
 - obs space:
-    name: sss_smap
+    name: sss_smap_l2
     dmpdir subdir: ocean/sss
     provider: SMAP
     type: nc
@@ -9,7 +9,7 @@ observations:
     ocean basin: RECCAP2_region_masks_all_v20221025.nc
 
 - obs space:
-    name: sss_smos
+    name: sss_smos_l2
     provider: SMOS
     dmpdir subdir: ocean/sss
     type: nc
@@ -319,3 +319,17 @@ observations:
     dmpdir subdir: atmos
     type: bufr
     dmpdir regex: 'gdas.*.mbuoyb.*.bufr_d'
+
+- obs space:
+    name: insitu_profile_tropical
+    provider: GTS
+    dmpdir subdir: atmos
+    type: bufr
+    dmpdir regex: 'gdas.*.dbuoy.*.bufr_d'
+
+- obs space:
+    name: insitu_surface_drifter
+    provider: GTS
+    dmpdir subdir: atmos
+    type: bufr
+    dmpdir regex: 'gdas.*.dbuoy.*.bufr_d'