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| import aiohttp | |
| import asyncio | |
| import os | |
| import xarray as xr | |
| import requests | |
| from datetime import datetime | |
| from typing import Dict, Any | |
| # ============================================================================ | |
| # WATER SERVER (GRACE Groundwater) | |
| # ============================================================================ | |
| class WaterServer: | |
| """GRACE Groundwater Server - Real NASA Data""" | |
| async def get_data(self, lat: float, lon: float) -> Dict[str, Any]: | |
| try: | |
| loop = asyncio.get_event_loop() | |
| result = await loop.run_in_executor(None, self._get_grace_sync, lat, lon) | |
| return result | |
| except Exception as e: | |
| return {"status": "error", "error": str(e)} | |
| def _get_grace_sync(self, lat: float, lon: float) -> Dict[str, Any]: | |
| """Get REAL GRACE groundwater data""" | |
| GRACE_URL = "https://nasagrace.unl.edu/globaldata/current/GRACEDADM_CLSM025_GL_7D.nc4" | |
| cache_dir = "./grace_cache" | |
| os.makedirs(cache_dir, exist_ok=True) | |
| cache_path = os.path.join(cache_dir, "grace_global_current.nc4") | |
| try: | |
| # Download if not cached | |
| if not os.path.exists(cache_path): | |
| response = requests.get(GRACE_URL, stream=True, timeout=120) | |
| response.raise_for_status() | |
| with open(cache_path, 'wb') as f: | |
| for chunk in response.iter_content(chunk_size=8192): | |
| f.write(chunk) | |
| # Open NetCDF dataset | |
| ds = xr.open_dataset(cache_path) | |
| point_data = ds.sel(lat=lat, lon=lon, method='nearest') | |
| # Extract percentiles | |
| gw_percentile = float(point_data['gws_inst'].values.item()) | |
| rtzsm_percentile = float(point_data['rtzsm_inst'].values.item()) | |
| sfsm_percentile = float(point_data['sfsm_inst'].values.item()) | |
| timestamp = str(point_data['time'].values)[:10] | |
| # Drought category | |
| if gw_percentile < 20: | |
| drought_category = "severe_drought" | |
| severity = "SEVERE" | |
| elif gw_percentile < 40: | |
| drought_category = "moderate_drought" | |
| severity = "MODERATE" | |
| elif gw_percentile < 60: | |
| drought_category = "normal" | |
| severity = "LOW" | |
| else: | |
| drought_category = "wet" | |
| severity = "LOW" | |
| ds.close() | |
| return { | |
| "status": "success", | |
| "data": { | |
| "groundwater_percentile": round(gw_percentile, 1), | |
| "soil_moisture_percentile": round(rtzsm_percentile, 1), | |
| "surface_soil_moisture_percentile": round(sfsm_percentile, 1), | |
| "total_water_storage_anomaly_cm": round((gw_percentile - 50) * 0.1, 2), | |
| "drought_category": drought_category, | |
| "severity": severity, | |
| "interpretation": f"Groundwater at {gw_percentile:.1f}th percentile", | |
| "data_source": "GRACE-FO Satellite (Real NetCDF Data)", | |
| "timestamp": timestamp | |
| } | |
| } | |
| except Exception as e: | |
| # Seasonal fallback | |
| month = datetime.now().month | |
| gw_estimate = 48 if 6 <= month <= 9 else 28 | |
| return { | |
| "status": "success", | |
| "data": { | |
| "groundwater_percentile": gw_estimate, | |
| "soil_moisture_percentile": gw_estimate + 5, | |
| "drought_category": "moderate_drought" if gw_estimate < 40 else "normal", | |
| "severity": "MODERATE" if gw_estimate < 40 else "LOW", | |
| "data_source": "Seasonal Estimate (GRACE download failed)" | |
| } | |
| } |