diff --git a/atmosphere/src/App.jsx b/atmosphere/src/App.jsx
index 031a851b1..722dd77e6 100644
--- a/atmosphere/src/App.jsx
+++ b/atmosphere/src/App.jsx
@@ -67,11 +67,9 @@ const WEATHER_PRESETS = [
   }
 ];
 
-// --- Locations ---
-// --- Locations ---
 const LOCATIONS = [
-  { name: 'Tokyo', longitude: 139.7671, latitude: 35.6812, heading: 180, pitch: -5, distance: 300 },
-  { name: 'Fuji', longitude: 138.7278, latitude: 35.3606, heading: 0, pitch: -10, distance: 4000 },
+  { name: 'Tokyo', longitude: 139.7671, latitude: 35.6812, heading: 180, pitch: -5, distance: 1100 },
+  { name: 'Fuji', longitude: 138.7278, latitude: 35.3206, heading: 0, pitch: -10, distance: 4000 },
   { name: 'Space', longitude: 139.7671, latitude: 35.6812, heading: 0, pitch: -90, distance: 100000 },
 ];
 
@@ -79,7 +77,7 @@ const LOCATIONS = [
 // 複数のCanvas間で状態を共有するための簡易ストア
 const worldState = {
   // 世界座標 (Atmosphere内での位置 - ECEF)
-  position: new Vector3(0, EARTH_RADIUS + 2000, 0),
+  position: new Vector3(0, EARTH_RADIUS + 100000, 0),
   // ローカル回転 (AvatarLayerでの回転 - Y-up)
   // Note: This is treated as the "Local" quaternion.
   quaternion: new Quaternion(),
@@ -233,35 +231,55 @@ function AtmosphereScene() {
   }, []);
 
   // 3. 時間進行と太陽移動 (Canvas内なのでuseFrameが使える)
-  useFrame((state, delta) => {
-    const currentDate = dateRef.current;
-    const elapsedMs = delta * TIME_SCALE * 1000;
-    currentDate.setTime(currentDate.getTime() + elapsedMs);
-    if (atmosphereRef.current) {
-      atmosphereRef.current.updateByDate(currentDate);
-    }
-    if (sunRef.current) {
-      const hours = currentDate.getHours() + currentDate.getMinutes() / 60 + currentDate.getSeconds() / 3600;
-      const sunAngle = MathUtils.mapLinear(hours, 6, 18, 0, Math.PI);
-      const sunX = -Math.cos(sunAngle);
-      const sunY = Math.sin(sunAngle);
+  //useFrame((state, delta) => {
+  //  const currentDate = dateRef.current;
+  //  const elapsedMs = delta * TIME_SCALE * 1000;
+  //  currentDate.setTime(currentDate.getTime() + elapsedMs);
+  //  if (atmosphereRef.current) {
+  //    atmosphereRef.current.updateByDate(currentDate);
+  //  }
+  //  if (sunRef.current) {
+  //    const hours = currentDate.getHours() + currentDate.getMinutes() / 60 + currentDate.getSeconds() / 3600;
+  //    const sunAngle = MathUtils.mapLinear(hours, 6, 18, 0, Math.PI);
+  //    const sunX = -Math.cos(sunAngle);
+  //    const sunY = Math.sin(sunAngle);
 
-      if (hours < 6 || hours > 18) {
-        sunRef.current.position.set(0, -1, 0);
-        sunRef.current.intensity = 10.0;
-      } else {
-        sunRef.current.position.set(sunX, sunY, 0.2);
-        sunRef.current.intensity = MathUtils.lerp(0.5, 3.0, sunY);
-      }
-    }
-  });
+  //    if (hours < 6 || hours > 18) {
+  //      sunRef.current.position.set(0, -1, 0);
+  //      sunRef.current.intensity = 10.0;
+  //    } else {
+  //      sunRef.current.position.set(sunX, sunY, 0.2);
+  //      sunRef.current.intensity = MathUtils.lerp(0.5, 3.0, sunY);
+  //    }
+  //  }
+  //});
+	useFrame((state, delta) => {
+		const currentDate = dateRef.current;
+		const elapsedMs = delta * TIME_SCALE * 1000;
+		currentDate.setTime(currentDate.getTime() + elapsedMs);
 
+		if (atmosphereRef.current) {
+			atmosphereRef.current.updateByDate(currentDate);
+
+			const sunDirection = atmosphereRef.current.sunDirection;
+
+			if (sunRef.current && sunDirection) {
+
+				sunRef.current.position.copy(sunDirection);
+				sunRef.current.intensity = 3.0; // 強度は固定で、時間帯による調整はAtmosphereが担当
+
+				if (sunDirection.y < -0.1) {
+					sunRef.current.intensity = 0.1;
+				}
+			}
+		}
+	});
   return (
     <>
       {/* Camera is controlled by FollowCamera component */}
       <PerspectiveCamera
         makeDefault
-        near={1}
+        near={10}
         far={10000000}
         fov={45}
       />
@@ -550,7 +568,7 @@ function CameraSync() {
 
 function AvatarLayer() {
   return (
-    <Canvas gl={{ alpha: true, antialias: true, logarithmicDepthBuffer: true }}>
+    <Canvas gl={{ alpha: true, antialias: true }}>
       <PerspectiveCamera makeDefault position={[0, 1.5, 3]} fov={40} />
       <CameraSync />
 
@@ -612,7 +630,7 @@ function LocationUI() {
 function AtmosphereLayer() {
   // Canvasが親となり、その中にロジックコンポーネント(AtmosphereScene)を入れる
   return (
-    <Canvas>
+    <Canvas gl={{ alpha: true, antialias: true }}>
       <AtmosphereScene />
     </Canvas>
   );